Human-Centric Design Research Laboratory
@ Texas Tech University
 

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RESEARCH INTERESTS

- Human-Centric Engineering
- Bioengineering, Biomechanics, Bio-Inspired Systems
- Spine Biomechanics
- Healthcare Engineering
- Robotics
- Computer-Aided Design and Simulation of Mechanical Systems
- Vehicle Dynamic Systems/Autonomous Vehicle

·         Human-Centric Engineering

To develop digital human models for various engineering applications (1) Engineering design, (2) injury prevention.

                                        Seated Posture Prediction                                                  

Standing Posture Prediction  

   

  

Publications:

1.   Howard, B., Cloutier, A., and Yang, J., Physics-Based Seated Posture Prediction for Pregnant Women and Validation Considering Ground and Seat Pan Contacts, Transactions of ASME Journal of Biomechanical Engineering, Vol 134, Issue 7, 2012, 071004-1-10. DOI

2.   Howard, B., and Yang, J., A New Stability Criterion for Human Seated Tasks with Given Postures, International Journal of Humanoid Robotics, Vol. 9, No. 3, 2012, 1250015 (24 pages). DOI

3.   Yang, J., Howard, B., Cloutier, A., and Domire, J.Z., Vertical Ground Reaction Forces for Given Human Standing Posture with Uneven Terrains: Prediction and Validation, IEEE Transactions on Human-Machine Systems, Vol. 43, No. 2, 2013, 225-234. DOI

4.   Gragg, J., and Yang, J., Digital Human Forward Kinematic and Dynamic Reliabilities, ASME Journal of Mechanical Design, Vol. 135, Issue 7, 2013, 071008 (10 pages). DOI

5.   Howard, B., and Yang, J., Calculating Support Reaction Forces in Physics-Based Seated Posture Prediction for Pregnant Women, International Journal of Robotics and Automation, Vol. 27, No. 2, 2012, 247-260. DOI

6.   Gragg, J., Yang, J., Cloutier, A., and Pena-Pitarch E., Effect of Link Length Determination on Posture Reconstruction, Applied Ergonomics, Vol. 44, Issue 1, 2013, 93-100. DOI

7.   Yang, J., Marler, T., and Rahmatalla, S., Multi-Objective Optimization-Based Method for Kinematic Posture Prediction: Development and Validation, Robotica, Vol. 29, Issue 2, 2011, 245-253. DOI

8.   Mi, Z., Yang, J., and Abdel-Malek, K., Optimization-Based Posture Prediction for Human Upper Body, Robotica, Vol. 27, Issue 4, 2009, 607-620. DOI

9.   Marler, T., Arora, J.S., Yang, J., Kim, H., and Abdel-Malek, K., Use of Multi-objective Optimization for Digital Human Posture Prediction, Engineering Optimization, Vol. 41, Issue 10, 2009, 925-943. DOI

 

 

Motion Prediction: Box Lifting

    

A person standing in a room

Description automatically generated  

       

 

Publications:

1.   Zaman, R., Xiang, Y., Rakshit, R., and Yang, J., Hybrid Predictive Model for Lifting by Integrating Skeletal Motion Prediction with an OpenSim Musculoskeletal Model, (in press) IEEE Transactions on Biomedical Engineering. DOI

2.   Zaman, R., Xiang, Y., Cruz, J., and Yang, J., Two-Dimensional versus Three-Dimensional Symmetric Lifting Motion Prediction Models: A Case Study, ASME Journal of Computing and Information Science in Engineering, Vol. 21, 2021, 044501 (7 pages). DOI

3.   Xiang, Y., Tahmid, S., Owens, P., Yang, J., Single Task-Based Optimization for Planar Symmetric Box Delivery Motion Prediction and Experimental Validation, ASME Journal of Mechanisms and Robotics, 13(2), Apr 2021, 024501 (6 pages). DOI

4.   Xiang, Y., Tahmid, S., Owen, P., and Yang, J., Two-Dimensional Symmetric Box Delivery Motion Prediction and Validation: Subtask-Based Optimization Method, Applied Sciences, 10, 8798, 1-14, 2020. DOI

5.   Zaman, R., Xiang, Y., Cruz, J., and Yang, J., Three-Dimensional Asymmetric Maximum Weight Lifting Prediction Considering Dynamic Joint Strength, IMechE, Part H: Journal of Engineering in Medicine, 235(4), 437-446, 2021. DOI

6.   Xiang, Y., Cruz, J., Zaman, R., and Yang, J., Multi-Objective Optimization for Two-Dimensional Maximum Weight Lifting Prediction Considering Dynamic Strength, Engineering Optimization, 53(02), 2021, 206 – 220. DOI

7.   Rakshit, R., Xiang, Y., and Yang, J., Dynamic Joint Strength-Based Simulation for Two-Dimensional Symmetric Maximum Weight-Lifting Simulation: Model Development and Validation, Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 234(7), 2020, 660-673. DOI

8.   Xiang, Y., Zaman, R., Rakshit, R., Yang, J., Subject-Specific Strength Percentile Determination for Two-Dimensional Human Symmetric Lifting Prediction Considering Dynamic Joint Strength, Multibody System Dynamics, 64(1), 63-76, 2019. DOI

 

Motion Prediction: Collision Avoidance

 

Publications:

1.   Yang, J., Howard, B., and Baus, J., A Collision Avoidance Algorithm for Human Motion Prediction Based on Perceived Risk of Collision: Part 2 - Application, (in press) IISE Transactions on Occupational Ergonomics and Human Factors. DOI

2.   Yang, J., Howard, B., and Baus, J., A Collision Avoidance Algorithm for Human Motion Prediction Based on Perceived Risk of Collision: Part 1 - Model Development, (in press) IISE Transactions on Occupational Ergonomics and Human Factors. DOI

 

Reach Zone Differentiation

Reach Envelope

  

Publications:

1.      Yang, J., and Abdel-Malek, K., Human Reach Envelope and Zone Differentiation for Ergonomic Design, Human Factors and Ergonomics in Manufacturing, Vol. 19, Issue 1, 15-34, 2009. DOI

2.   Yang, J., Verma, U., Marler, T., Beck, S., Rahmatalla, S., and Harrison, C., Workspace Zone Differentiation Tool for Visualization of Seated Postural Comfort, International Journal of Industrial Ergonomics, Vol. 39, no. 1, 267-276, 2009. DOI

3.      Yang, J., Sinokrot, T., and Abdel-Malek, K., Workspace Zone Differentiation Analysis and Visualization for Virtual Humans, Ergonomics, Vol. 51, Issue 3, 2008, 395-413. DOI

 

Publications:

1.      Yang, J., Sinokrot, T., and Abdel-Malek, K., A General Analytic Approach for Santos Upper Extremity Workspace, Computers and Industrial Engineering, Vol. 54, 2008, 242-258. DOI

2.   Yang, J., Abdel-Malek, K., and Nebel, K., Reach Envelope of a 9 Degree of Freedom Model of the Upper Extremity, International Journal of Robotics and Automation, Vol. 20, No.4, 2005, 240-259. DOI

3.      Yang, J., Abdel-Malek, K., and Nebel, K., Restrained and Unrestrained Driver Reach Barriers, SAE Transactions: Journal of Aerospace, Vol. 113, 1, 2004, 288-296. DOI 

 

Hand Modeling

        Piano Project: Transdisciplinary Research of Academy at Texas Tech University

  

Publications:

1.   Pena-Pitarch, E., Falguera, N.T., and Yang, J., Virtual Human Hand: Model and Kinematics, Computer Methods in Biomechanics and Biomedical Engineering, 17(5), 568-579, 2014. DOI

2.   Yang, J., Pena Pitarch, E., Kim, J., and Abdel-Malek, K., Posture Prediction and Force/Torque Analysis for Human Hands, Proceedings of SAE Digital Human Modeling for Design and Engineering, July 4-6, 2006, Lyon, France.

 

Motion Capture

  

Neuroscience study of piano play performance through fMRI

Publications:

1.   Hou, J., Rajmohan, R., Fang, D., Al-Khalil, K., Yang, J., Westney, W., Grund, C., and O'Boyle, M., Mirror Neuron Activation of Musicians and Non-musicians in Response to Motion Captured Piano Performances, Brain and Cognition, Vol. 115, 2017, 47-55. DOI

2.   Westney, W., Grund, C.M., Yang, J., Cloutier, A., Latimer, J., O’Boyle, M., Fang, D., and Hou, J., The Pedagogical Value of “Enjoyment” in the Classical Piano Studio, Music Teachers National Association (MTNA) e-Journal, Volume 7, Issue 4, 2016, 2-21. DOI

3.   Westney, W., Grund, C., Latimer, J., Cloutier, A., Yang, J., and O’Boyle, Hou, J., and Fang, D., Musical Embodiment and Perception: Performances, Avatars and Audiences, Special Issue: Music and Meaning, Signata-Annals of Semiotics, No. 6, 2015, 353-381. DOI

 

Muscle Fatigue Modeling

Muscle Fatigue Model for Static Tasks (Isometric Contraction)

Joint-Based Fatigue Model for Dynamic Tasks

 

 

 

 

Publications:

1.   Rikshit, R., Barman, S, Xiang, Y., and Yang, J., Sensitivity Analysis of Sex- and Functional Muscle Group-Specific Parameters for a Three-Compartment-Controller Model of Muscle Fatigue, Journal of Biomechanics, 141, 111224, 2022. DOI

2.   Rakshit, R., Xiang, Y., and Yang, J., Functional Muscle Group- and Sex-Specific Parameters for a Three-Compartment Controller Muscle Fatigue Model Applied to Isometric Contractions, Journal of Biomechanics, 127, 110695, 2021. DOI

3.   Rakshit, R., and Yang, J., Modelling Muscle Recovery from a Fatigued State in Isometric Contractions for the Ankle Joint, Journal of Biomechanics, Vol. 100, February 13, 2020, 109601. DOI Errata DOI

 

Driver accommodation

Publications:

1.   Ozsoy, B., Ji, X., Yang, J., Gragg, J., and Howard, B., Simulated Effect of Driver and Vehicle Interaction on Vehicle Interior Layout, International Journal of Industrial Ergonomics, Vol. 48, 2015, 11-20. DOI

2.   Gragg, J., Yang, J., and Howard, B., Hybrid Method for Driver Accommodation Using Optimization-Based Digital Human Models, Computer Aided Design, Vol. 44, Issue 1, 2012, 29-39. DOI

3.   Gragg, J., Yang, J., and Long, J., Optimization-Based Approach for Determining the Driver Seat Adjustment Range for Vehicles, International Journal of Vehicle Design, Vol. 57, Nos. 2/3, 2011, 148-161. DOI

4.   Gragg, J., and Yang, J., Effect of Obesity on Seated Posture Inside a Vehicle Based on Digital Human Models, SAE International Journal of Material and Manufacturing, Vol. 4, No. 1, 516-526, 2011. DOI

 

Optimal Posture and Supporting Hand Force Prediction for Automotive Assembly One-Hand Tasks

 

 

 

 

Publications:

1.   Howard, B., Yang, J., and Ozsoy, B., Optimal Posture and Supporting Hand Force Prediction for Common Automobile Assembly One-Hand Tasks, ASME Journal of Mechanisms and Robotics, Vol. 6, Issue 2, 021009 (Mar 12, 2014). DOI

 

Injury Risks in Box Lifting

Micro Physical Environment Factors for Patient Falls

Publications:

1.   Haddas, R., Samocha, Y., and Yang, J., Effects of Volitional Spine Stabilization on Trunk Control during Asymmetric Lifting Task in Patients with Recurrent Low Back Pain, Global Spine Journal, Vol. 10(8), 1006-1014, 2020. DOI

2.   Haddas, R., Yang, J., and Lieberman, I.H., Effects of Volitional Spine Stabilization on Lifting Task in Recurrent Low Back Pain Population, European Spine Journal, Volume 25, Issue 9, 2016, 2833-2841. DOI

 

 

 

 

 

 

 

 

Publications:

1.   Pati, D., Valipoor, S., Cloutier, A., Yang, J., Freier, P., Harvey, T.E., and Lee, J., Physical Design Factors Contributing to Patient Falls, (in press) Journal of Patient Safety. DOI

2.   Cloutier, A., Yang, J., Pati, D., and Valipoor, S., Experimental Identification of Potential Falls in Older Adult Hospital Patients, Journal of Biomechanics, Vol. 49, Issue 7, 2016, 1016-1020. DOI

 

Multibody Biodynamic Model

Publications:

1.   Yang, Y., Zhao, Q., and Yang, J., Biodynamic Model for Seated Posture under Vibration Considering any Two-Direction Coupling among the Vertical, Longitudinal, and Lateral Directions, (under review) DOI

2.   Yu, Z., Zhao, Q., Yang, J., Xia, Y., and Ma, Y., Uncoupled Spatial Biodynamic Model for Seated Humans Exposed to Vibration-Development and Validation, International Journal of Industrial Ergonomics, 85 (2021) 103171. DOI

3.   Zhang, W., Ma, Z., Jin, A., Yang, J., and Zhang, Y., An Improved Biodynamic Model Considering Foot and Floor Interaction, SAE World Congress, Detroit, Michigan, USA, April 21-23, 2015. DOI

4.   Kumbhar, P., Li, N., Xu, P., and Yang, J., Minimizing Occupant Body Fatigue to Determine Seat Dynamic Parameters, SAE Paper 2014-01-0877, SAE World Congress, April 8-10, 2014, Detroit, MI. DOI

5.   Kumbhar, P., Xu, P., and Yang, J., Evaluation of Human Body Response to Different Vehicle Seats Using a Multibody Biodynamic Model, SAE World Congress, April 16-18, 2013, Detroit, MI. DOI

 

Grasping Force Optimization for Common Anthropomorphic Grasps

 

  

 

Tip

Tripod

Cylinder

 

Average

SD

Average

SD

Average

SD

Nonlinear Hard

0.026

0.040

0.030

0.045

1.66

1.18

Nonlinear Soft

0.029

0.020

0.055

0.022

3.08

1.94

LMI Hard

0.029

0.040

0.060

0.044

4.63

2.20

LMI Soft

0.036

0.020

0.12

0.17

10.7

3.30

Linear 4 Segments

0.0091

0.020

0.012

0.025

0.23

0.055

Linear 10 Segments

0.011

0.024

0.018

0.036

0.72

0.23

Linear 20 Segments

0.016

0.024

0.022

0.090

3.52

1.31

Average Computation Time (s)

Publications:

1.   Cloutier, A., and Yang, J., Examining the Robustness of Grasping Force Optimization Methods Using Uncertainty Analysis, ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems Part B: Mechanical Engineering, Vol. 4, December 2018, 041007 (8 pages). DOI

2.   Cloutier, A., and Yang, J., Grasping Force Optimization Approaches for Anthropomorphic Hands, ASME Journal of Mechanisms and Robotics, 10 (1), 011004 (Dec. 20, 2017) (10 Pages). DOI

3.   Cloutier, A., and Yang, J., Design, Control, and Sensory Feedback of Externally-Powered Hand Prosthesis: A Literature Review, Critical Review in Biomedical Engineering, Vol. 41, Issue 2, 2013, 161-181. DOI

 

 

·         Bioengineering, Biomechanics, Bio-Inspired Systems

The research goal in this area is to develop computer human modules to address: (1) sports biomechanics; (2) ACL biomechanics; (3) biomechanical discomfort model; (4) multibody human dynamics

Seating Balance Prediction

Motion Prediction: Gait

Publications:

1.   Yang, J., and Kim, J., Static Joint Torque Determination of a Human Model for Standing and Seating Tasks Considering Balance, ASME Journal of Mechanisms and Robotics, Vol. 2, Issue 3, 2010, 031005-1-9. DOI

2.   Kim, J., Yang, J., and Abdel-Malek, K., Multi-Objective Optimization Approach for Predicting Seated Posture Considering Balance, International Journal of Vehicle Design, Vol. 51, No. 3/4, 2009, 278-291.DOI

Publications:

1.   Xiang, Y., Chung, H.J., Kim, H.J., Bhatt, R., Marler, R.T., Rahmatalla, S., Yang, J., Arora, J.S., and Abdel-Malek, K., Predictive Dynamics: An Optimization-Based Novel Approach for Human Motion Simulation, Structural and Multidisciplinary Optimization, Vol. 41, Number 3, 465-479, 2010. DOI

2.   Abdel-Malek, K., Yang, J., Marler, T., Beck, S., Mathai, A., Patrick, A., and Arora, J., Towards a New Generation of Virtual Humans, International Journal of Human Factors Modelling and Simulation, Vol. 1, No. 1, 2-39, 2006. DOI

 

Jumping without arm swing

Jumping with arm swing

 

 

  

 

 

   

Publications:

1.   Baus, J., Harry, J., and Yang, J., Optimization Based Subject-Specific Planar Human Vertical Jumping Prediction- Effect of Elbow Flexion and Weighted Vest, IMechE, Part H: Journal of Engineering in Medicine. DOI

2.   Baus, J., Harry, J., and Yang, J., Optimization-Based Subject-Specific Planar Human Vertical Jumping Prediction: Model Development and Validation, IMechE, Part H: Journal of Engineering in Medicine, 235(7), 805-818, 2021. DOI

3.   Baus, J., Harry, J., and Yang, J., Jump and Landing Biomechanical Variables and Methods – A Literature Review, Critical Review in Biomedical Engineering, 48(4): 211-222, 2020. DOI

4.   Ozsoy, B., Yang, J., Howard, B., Domire, Z., and Boros, R., Direct Optimization-Based Planar Human Vertical Jumping Simulation, International Journal of Human Factors Modeling and Simulation, Vol. 2, No. 1/2, 2011, 46-66. DOI

 

Sit-to-Stand Motion Prediction

              

        

             

         

Publications:

1.   Ozsoy, B., and Yang, J., Assisted Spatial Sit-to-Stand Prediction-Part 2: Virtual Injured Elderly Individuals, ASME Journal of Computing and Information Science in Engineering, Dec. 2021, 21(6): 061009 (13 pages). DOI

2.   Yang, J., and Ozsoy, B., Assisted Spatial Sit-to-Stand Prediction-Part 1: Virtual Healthy Elderly Individuals, ASME Journal of Computing and Information Science in Engineering, Vol. 21, 2021, 041002 (9 pages). DOI

3.   Yang, J., and Ozsoy, B., Three Dimensional Unassisted Sit-to-Stand Prediction for Virtual Healthy Young and Elderly Individuals, Multibody System Dynamics, 49(1), 33-52, 2020. DOI

4.   Yang, J., and Ozsoy, B., (2018) Physics-Based Sit-to-Stand Three Dimensional Motion Prediction Considering Seat Pan Contact. In Paul G, Scataglini S. (eds) DHM and Posturography, Elsevier. 

 

Shoulder Modeling and Experiment

Publications:

1.   Yang, J., Feng, X., Xiang, Y., Kim, J., and Rajulu, S., Determining the Three-Dimensional Relation between the Skeletal Elements of the Human Shoulder Complex, Journal of Biomechanics, Vol. 42, No. 11, 2009, 1762-1767. DOI

2.   Yang, J., Feng, X., Xiang, Y., Kim, J., and Rajulu, S., Joint Coupling Relationship for Human Shoulder Complex, International Conference on Human-Computer Interaction (HCI), 2nd International Conference on Digital Human Modeling, San Diego, CA, July 19-24, 2009.

3.   Yang, J., Feng, X., Kim, J., and Rajulu, S., Review of Biomechanical Models of Human Shoulder Complex, International Journal of Human Factors Modelling and Simulation, Vol. 1, No. 3, 2010, 271-293. DOI 

 

 

Driver and Vehicle Interaction Study

 

 

Simulation-based method                                                 

 

Vehicle interior layout

 

Driver model

          

 

Predicted H-point, eye, and preferred center of the steering wheel locations with the accommodation level of 95%

Publications:

1.   Ozsoy, B., Ji, X., Yang, J., Gragg, J., and Howard, B., Simulated Effect of Driver and Vehicle Interaction on Vehicle Interior Layout, International Journal of Industrial Ergonomics, Vol. 48, 2015, 11-20. DOI

 

Human Upright Postural Balance

 

Publications:

1.   Chumacero, E., and Yang, J., Validation for an Ankle-Hip Model of Human Balance on a Balance Board Via Frequency Content, Gait and Posture, 82, 2020, 313-321. DOI

2.   Chumacero, E., and Yang, J., Effect of Disturbances and Sensorimotor Deficits on the Postural Robustness of an Ankle-Hip Model of Balance on a Balance Board, Nonlinear Dynamics, Vol. 99, 1959-1973, 2020. DOI

3.   Chumacero, E., Yang, J., and Chagdes, R. J., Effect of Ankle-Pivot Misalignment and Upward Ankle Vertical Displacement on Stability and Equilibrium Location for an Ankle-Hip Model of Balance on a Balance Board, ASME Journal of Computational Nonlinear Dynamics, 15(2), Feb. 2020, 021002 (13 pages). DOI

4.   Chumacero, E., and Yang, J., Basin of Attraction and Limit Cycle Oscillation Amplitude of an Ankle-Hip Model of Balance on a Balance Board, ASME Journal of Biomechanical Engineering, Vol. 141, Number 11, 2019, 111007 (9 pages).  DOI

5.   Chumacero, E., Yang, J., and Chagdes, R. J., Numerical Nonlinear Analysis for Dynamic Stability of an Ankle-Hip Model of Balance on a Balance Board, ASME Journal of Computational and Nonlinear Dynamics, Vol. 14, 2019, 101008 (11 pages).  DOI

6.   Chumacero, E., Yang, J., and Chagdes, J. R., Effect of Sensory-Motor Latencies and Active Muscular Stiffness on Stability for an Ankle-Hip Model of Balance on a Balance Board, Journal of Biomechanics, Vol. 75, 77-88, 2018. DOI

 

 

  • Spine Biomechanics

The research goal is to diagnose spine disorders and determine the optimal surgery plan for surgeons to conduct spine surgery.

Healthy Subjects:

(a)                         (b)                             (c)                             (d)                                (e)

Five lumber spine FE models of healthy subjects: (a) 22-year old male, (b) 41-year old male, (c) 47-year old male, (d) 48-year old female, (e) 49-year old female

The mean and standard deviation of IRA in four spinal levels were obtained by the five FE models compared with experimental data (Panjabi et al., 1994) under pure moments (2.5 Nm, 5Nm, 7.5Nm) for flexion (+) and extension (-)

(a)                                                       (b)

The mean and standard deviation of FJF in this study in the L1-L2 and L3-L4 spinal levels were compared with experimental data (Sawa and Crawford, 2008; Niosi et al, 2008; Wilson et al., 2006) with a pure moment of 7.5 Nm in axial rotation and extension directions under: (a) axial rotation and (b) extension

Scoliosis Subjects:

Pre- and post- scoliosis fusion surgery scans    FE models of scoliosis spine from T12-S1 level with pedicle screws and rods at L2-S1 an

The intersegmental rotation angle and the intradiscal pressure at level L1-2under five different loads

500N

750N

1000N

1250N

1500N

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Intersegmental Rotation (Degree)

6.465

6.168

6.974

6.654

7.214

7.056

7.694.

7.731

8.915

9.128

Intradiscal Pressure (Mpa)

1.606

1.656

1.729

1.836

1.947

1.918

2.082

2.145

2.315

2.286

Pedicle Screw (N)

79.7

68.5

96.4

86.1

140.5

178.2

284.3

291.7

308.3

352.4

Rod (N)

25.4

28.9

37.5

33.4

46.1

37.7

70.5

62.9

93.4

110.6

Fixation Methods:

              

                   

                                        

Pedicle Subtraction Osteotomies, Primary Rods (P), Interbody Cage (IB), (Accessory Rods (A), Delta Rods (D), Cross Rod (C):

   

              PSO+2P   PSO+2P+IB  PSO+2P+IB+2A  PSO+2P+IB+2D  PSO+2P+IB+1C   PSO+2P+IB+2C

                 

(0-300 MPa)

Maximum von Mises Stress in Rods

Publications:

1.   Xu, M., Yang, J., Lieberman, I.H., and Haddas, R., Finite Element Method-Based Study of Pedicle Screw-Bone Interaction in Pullout Test and Physiological Spinal Loads, Medical Engineering and Physics, Vol. 67, Nov., 2019, 11-21. DOI

2.   Xu, M., Yang, J., Lieberman, I.H., and Haddas, R., The Effect of Surgical Alignment in Adult Scoliotic Spines on Axial Cyclic Vibration: A Finite Element Study, ASME Journal of Computing and Information Science in Engineering, Vol. 19, June, 2019, 021006 (6 pages). DOI

3.   Haddas, R., Xu, M., Lieberman, I.H., and Yang, J., Finite Element Based-Analysis of Pre and Post Lumber Fusion for Adult Degenerative Scoliosis Patients, Spine Deformity, Vol. 7, 543-552, 2019. DOI

4.   Xu, M., Yang, J., Lieberman, I.H., and Haddas, R., Comparisons of Stress Distributions in Vertebral Bone and Pedicle Screw and Screw-Bone Load Transfers among Different Fixation Methods of Lumbar Spine Fusion Surgery: A Finite Element Study, Medical Engineering and Physics, 63, 2019, 26-32.  DOI

5.   Xu, M., Scholl, T., Berjano, P., Cruz, J., and Yang, J., Rod Stress Prediction in Spinal Alignment Surgery with Different Supplementary Rod Constructing Techniques: A Finite Element Study, ASME 2018 International Design Engineering Technical Conference and Computers & Information in Engineering Conference, August 26-29, 2018, Quebec City, Canada. DOI

6.   Xu, M., Yang, J., Lieberman, I.H., and Haddas, R., Finite Element Method-Based Study for Effect of Adult Degenerative Scoliosis on the Spinal Vibration Characteristics, Computers in Biology and Medicine, Vol. 84, 2017, 53-58. DOI

7.   Xu, M., Yang, J., Haddas, R., and Lieberman, I.H., Lumbar Spine Finite Element Model for Healthy Subjects: Development and Validation, Computer Methods in Biomechanics and Biomedical Engineering, Vol. 20, Issue 1, 1-20, 2017. DOI

  • Healthcare Engineering

The research goal in this thrust is to develop a discomfort assessment model for personal protective equipment such as helmets, goggles, shoes, clothing, respirators, etc.

 
               


FEM Model for the Face and the N95 Filtering Facepiece Respirator

 

Mouth exhale streamline                         Mouth inhale steamline                    Nose exhale velocity                                         Nose inhale velocity

CFD simulation  for the Face and the N95 Filtering Facepiece Respirator

 

Temperature contours through CFD simulation and Infrared Imaging for leaks

 

 

Rear Effect of Helmet from Bullet

 

Construction Helmet study

Publications:

1.       Lei, Z., Yang, J., and Zhuang, Z., Human Face and N95 Filtering Facepiece Respirator Interaction: Contact Pressure Simulation and Validation, Journal of Occupational and Environmental Hygiene, Vol. 9, Issue 1, 2012, 46-58. DOI

2.       Lei, Z., Ji, X., Li, N., Yang, J., Zhuang, Z., and Rottach, D., Effect of Head Movement on Contact Pressure between Respirators and Headforms: Part 2-Simulation, The Annals of Occupational Hygiene, Vol. 58, Number 9, 2014, 1186-1199. DOI

3.       Lei, Z., Ji, X., Li, N., Yang, J., Zhuang, Z., and Rottach, D., Effect of Head Movement on Contact Pressure between Respirators and Headforms: Part 1-Headform Model and Validation, The Annals of Occupational Hygiene, Vol. 58, Number 9, 2014, 1175-1185. DOI

4.       Lei, Z., Yang, J., and Zhuang, Z., A Novel Algorithm for Determining Contact Area between a Respirator and Headform, Journal of Occupational and Environmental Hygiene, Vol. 11, No. 4, 227-237, 2014. DOI

5.       Lei, Z., and Yang, J., Computational Fluid Dynamics-Based Respirator Fit Evaluation-A Pilot Study, Journal of the International Society for Respiratory Protection, Vol. 30, No. 2, 105-115, 2013. DOI

6.       Lei, Z., Yang, J., Zhuang, Z., and Roberge, R., Simulation and Validation of Respirator Faceseal Leaks Using Computational Fluid Dynamics and Infrared Imaging, The Annals of Occupational Hygiene, Vol. 57, No. 4, 2013, 493-506. DOI

7.       Lei, Z., and Yang, J., Layered Pentahedral Mesh Generation for Biomechanical Geometries with Unclosed Surfaces, Computer-Aided Design and Applications, Vol. 10, No. 2, 2013, 231-245. DOI

8.       Lei, Z., and Yang, J., Methodology for Simulating Air Leakages of an N95 Filtering Facepiece Respirator-A Pilot Study, Computer Aided Design and Applications, Vol. 9, Issue 1, 2012, 43-53. DOI

9.       Dai, J., Yang, J., and Zhuang, Z., Sensitivity Analysis of Important Parameters Affecting Contact Pressure between a Respirator and a Headform, International Journal of Industrial Ergonomics, Vol. 41, Issue 3, 2011, 268-279. DOI

10.    Long, J., Yang, J., Lei, Z., and Liang, D., Simulation-Based Assessment for Construction Helmets, Computer Methods in Biomechanics and Biomedical Engineering, Vol. 18(1), 2015, 24-37. DOI

11.    Yang, J., and Lei, Z., (2018) Human Head Modeling and Applications. In Paul G, Scataglini S. (eds) DHM and Posturography, Elsevier. 

  • Robotics

a)  Continuum Robots

The research goal in this thrust is (1) to investigate the kinematic and dynamic aspects of robotics or systems; (2) to synthesize medical devices or medical robots; (3) to develop novel methodologies for motion planning, control and navigation of robots.

                   

Elephant Trunk Robot

Publications:

1.   Yang, J., Peña Pitarch, E., Potratz, J., Beck, S., and Abdel-Malek, K., Synthesis and Analysis of a Flexible Elephant Trunk Robot, Advanced Robotics, Vol. 20, No. 6, 2006, 631-659. DOI

 

b)  Hand Prosthesis

 

 

   
Hand Prosthesis

   

   

3D Printed Soft Prosthetic Hand

Publications:

1.   Abbot, E., Oliveira, A., and Yang, J., Novel Design of a 3d Printed Anthropomorphic Soft Prosthetic Hand, ASME 2020 International Design Engineering Technical Conference and Computers & Information in Engineering Conference, August 16-19, 2020, Sant Louis, MO, USA.

2.   Potratz, J., Yang, J., Abdel-Malek, K., Peña Pitarch, E., and Grosland, N., A Light Weight Compliant Hand Mechanism with High Degrees of Freedom, ASME Journal of Biomechanical Engineering, Vol. 127, 6, 2005, 934-945. DOI

3.   Yang, J., Pena Pitarch, E., Abdel-Malek, K., Patrick, A., and Lindkvist, L., A Multi-Fingered Hand Prosthesis, Mechanism and Machine Theory, Vol. 39, Issue 6, 2004, 555-581. DOI

4.   Yang, J., Abdel-Malek, K., and Zhang, Y., On the Workspace Boundary Determination of Serial Manipulators with Non-unilateral Constraints, Robotics and Computer-Integrated Manufacturing, Vol. 24, No. 1, 2008, 60-76. DOI 

 

c)   Soft Robots

 

 

Publications:

1.   Oliveira, A., Kashem, M. N. H., Luna, D., Geerts, W., Li, W., and Yang, J., Magnetic Properties of PDMS Embedded with Strontium Ferrite Particles Cured Under Different Magnetic Field Configurations, (accepted) AIP Advances. DOI

2.   Oliveira, A., Bhattacharya, S., and Yang, J., Mechanics of Magnetic Robots akin to Soft Beams Supported at Unanchored Contacts, ASME Journal of Applied Mechanics, Vol. 88, 2021, 121005 (11 pages). DOI

3.   Oliveira, A., and Yang, J., Review of Magnetically Actuated Milli/Micro-Scale Robots Locomotion and Features, Critical Reviews in Biomedical Engineering, 47(5), 379-394, 2019. DOI

  • Computer-Aided Design and Simulation of Mechanical Systems

The objective in this area is to develop new methodologies to advance CAD and simulation of mechanisms.


NC Machining Verification                                                        Suspension System

Publications:

1.   Yang, J., and Abdel-Malek, K., Design Propagation in Kinematics of Mechanical Systems, Mechanism and Machine Theory, Vol. 42, No. 7, 2007, 807-824. DOI

2.   Abdel-Malek, K., and Yang, J., The Method of Cut-Joint Kinematic Constraint: Velocity Propagations, International Journal of Advanced Manufacturing Technology, Vol. 31, No. 7-8, 2007, 815-824. DOI

3.   Yang, J., and Abdel-Malek, K., Verification of NC Machining Processes Using Swept Volumes, International Journal of Advanced Manufacturing Technology, Vol. 28, No. 1-2, 2006, 82-91. DOI

4.   Abdel-Malek, K, Yang, J., Blackmore, D., and Joy, K., Swept Volumes: Foundations, Perspectives, and Applications, International Journal of Shape Modeling, Vol. 12, No. 1, 2006, 87-127. DOI

 

  • Vehicle Dynamic System

-      Tire Modeling: Flexible Ring Tire Model

In-Plane Flexible Ring Tire Model

Figure 1Figure 2Figure 3(a)   Figure 5

 

 

Quasi-Static v=2km/h

Dynamic v=30km/h

Figure 9(a)Figure 9(b)

Out-of-Plane Model

                              

                

 

                   

                                                        Acceleration/Braking Test                                     Cornering Test                                                     Combined Slip Test

In-Plane Cleat Tests:

                                                                         Quasi-Static Test                                                                                                            Dynamic Test

Out-of-Plane Cleat Tests:

Quasi-Static Test: 2km/h, Static Load: 4800N, Cleat height: 0.01m, Cleat Angle: 45 degrees, Tire camber: 0

Dynamic Cleat Test: V=30km/h, Static Load: 3000N, Cleat height: 0.01m, Cleat Angle: 45 degrees, Tire camber: 0

Dynamic Cleat Test: V=30km/h, Static Load: 6000N, Cleat height: 0.01m, Cleat Angle: 45 degrees, Tire camber: 0

Dynamic Cleat Test: V=60km/h, Static Load: 4800N, Cleat height: 0.01m, Cleat Angle: 45 degrees, Tire camber: 0

Dynamic Cleat Test: V=30km/h, Static Load: 4800N, Cleat height: 0.02m, Cleat Angle: 45 degrees, Tire camber: 0

Dynamic Cleat Test: V=30km/h, Static Load: 4800N, Cleat height: 0.01m, Cleat Angle: 45 degrees, Tire camber: 4 degrees

Publications:

1.   Li, B., Yang, X., and Yang, J., Out-of-Plane Tire Model Development for Vehicle Dynamic Simulation on Various Rigid Road Surfaces, (in press) International Journal of Vehicle Performance. DOI

2.   Li, B., Yang, X., Yang, J., Zhang, Y., and Ma, Z., In-Plane Flexible Ring Tire Model Parameter Identification: Optimization Algorithms, SAE International Journal of Vehicle Dynamics, Stability and NVH, 2(1): 2018, 1-17. DOI

3.   Li, B., Yang, X., Yang, J., Zhang, Y., and Ma, Z., In-Plane Flexible Ring Tire Model-Part 2: Parameterization, Tire Science and Technology, TSTCA, Vol. 46, No. 3, July–September 2018, 220-240. DOI

4.   Li, B., Yang, X., Yang, J., Zhang, Y., and Ma, Z., In-Plane Flexible Ring Tire Model-Part 1: Model Development and Validation, Tire Science and Technology, TSTCA, Vol. 46, No. 3, July–September 2018, 174-219. DOI

 

-      Air Spring Modeling

     

 

 

           

 

              

                           

Publications:

1.   Zhu, H., Yang, J., and Zhang, Y., Dual-Chamber Pneumatically Interconnected Suspension: Modeling and Theoretical Analysis, (in press) Mechanical Systems and Signal Processing. DOI

2.   Zhu, H., Yang, J., and Zhang, Y., Modeling and Optimization for Pneumatically Pitch-Interconnected Suspensions of a Vehicle, Journal of Sound and Vibration, Vol. 432, 2018, 290-309. DOI

3.   Zhu, H., Yang, J., Zhang, Y., Feng, X., A Novel Air Spring Dynamic Model with Pneumatic Thermodynamics, Effective Friction and Viscoelastic Damping, Journal of Sound and Vibration, Vol. 408, 2017, 87-104. DOI

4.   Zhu, H., Yang, J., Zhang, Y., Feng, X., and Ma, Z., Nonlinear Dynamic Model of Air Spring with a Damper for Vehicle Ride Comfort, Nonlinear Dynamics, Vol. 89, Issue 2, 2017, 1545-1568. DOI

 

-      Contact between the Roller and Guide with Clearances (Sliding Door System)

       

 

Publications:

1.   Gao, Y., Duan, Y., Yang, J., Yuan, Z., and Ma, C., Hybrid Contact Force Model for the Planar Joint with Clearances between the Guide and Nylon-Covered Roller. (under review) DOI

2.   Gao, Y., Duan, Y., Yang, J., Yuan, Z., and Ma, C., Improved K-Medoids Algorithm-Based Clustering Analysis for Handle Driving Force in Automotive Manual Sliding Door Closing Process, (in press) Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automotive Engineering. DOI

3.   Gao, Y., Duan, Y., Yang, J., Yuan, Z., and Ma, C., Modeling Planar Joints with Clearance between the Guide and Roller in Mechanisms, ASME Journal of Computational Nonlinear Dynamics, 15(1), Jan. 2020, 011010 (10 pages). DOI

 

 

 

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