Dr Kumar Mithraratne

BSc(Eng) Moratuwa, MSc Dist. Lond., PhD NU Singapore

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Senior Research Fellow


Kumar graduated with a Bachelor of Science of Engineeering in Chemical Engineering from the University of Moratuwa, Sri Lanka. He received a Master of Science with Distinction from the University of London (King's College London) and a PhD from the National University of Singapore, both in Mechanical Engineering.

Kumar is a recipient of the British Government Technical Corporation fellowship and a University of Auckland Postdoctoral Fellowship.

Kumar joined the Auckland Bioengineering Institute in 2000 is now a Principal Investigator.

Research | Current

Kumar is currently working on musculoskeletal system biomechanics and facial animation using biophysically-based models.

His primary research interests are:

  • soft tissue continuum mechanics,

  • joint mechanics,

  • finite element analysis,

  • gait analysis and flow mechanics.

Research Group

Musculoskeletal Modelling


  • 2013 - 2014 "Biomechanical Modelling to Explain Tophus Formation and Bone Erosion in Gout"
    Role: Co-investigator
    Grant value: NZD 117,300
    Funding agency: Auckland Medical Research Foundation, New Zealand.
  • 2013 - 2014 "Bi-planar Fluroscopic Imaging of the Shoulder Complex"
    Role: Principal Investigator
    Grant value: NZD 12,500
    Funding agency: Faculty Research Development Fund, University of Auckland, New Zealand.
  • 2013 - 2014 "Fast Fracture"
    Role: Co-investigator
    Grant value: NZD 1,000,000
    Funding agency: Ministry of Business, Innovation and Employment, New Zealand.
  • 2011 - 2014 "Expressive Heads and Hands"
    Role: Principal Investigator
    Grant value: NZD 1,500,000
    Funding agency: Ministry of Science and Innovation, New Zealand.
  • 2007 - 2010 "Biomechanics for Animation"
    Role: Principal Investigator
    Grant value: NZD 1,000,000
    Funding agency: Foundation for Research, Science and Technology, New Zealand.

Teaching | Current

ENGSCI772 Whole Organ Modelling (2005 - 2013)

Postgraduate supervision



  • Hooman ZarrehIntegrating Material Point Method with Peridynamics

  • Nalaka SamaraweeraModelling Heat and Sound Transmission through Structures

  • Elias Soltani, Modelling Thermoregulation of the Human Body

  • Yunru Ma (with Dr Yanxin Zhang ,Department of Exercise Sciences), Using Biomechanical simulation to predict treatment outcomes of cerebral palsy patients with equinus gait



  • Ted Yeung (2016), Inverse Kinematics of the Shoulder Complex

  • Massoud Alipour (2015), An Anatomically accurate Finite Element of Skeletal Muscle for Improved Characterisation of Muscle Deformation

  • Desney Greybe (2015), Forearm Mechanics and Its Implication on the Distal Radioulnar Joint

  • Tim Wu (2013), A Computational Framework for Modelling the Biomechanics of Human Facial Expressions

  • Alice Hung (2012), An Anatomically-based Biomechanics Model of the Face for Simulating Facial Expressions

  • Katja Oberhofer (2010), Anatomically-based, Subject-specific modelling of Lower Limb Motion During Gait


  • Wencke Hansen (2011), Three-dimensional Model of Tibio-Femoral Articulation
  • Jonguen Son (2010), Blood Flow Modelling in Deforming Skeletal Muscle
  • Sarah Cox (2007), Computational Ergonomics: An Anatomically-based Finite Element Model of the Lower Limbs in the Seated Posture


Principal Investigator

Areas of expertise

  • Joint mechanics (upper limb kinematics involving shoulder complex, forearm and hand and lower limb involving gait analysis, foot and knee),
  • Finite and linear deformation analysis of biological and engineering structures,
  • Application of engineering principles to predict facial expressions using anatomically realistic and physically accurate mathematical models,
  • Computational fluid mechanics (dynamic flow modelling in circulatory system including cutaneous blood flow),
  • Finite element analysis
  • Finite difference methods
  • Mesh based particle methods (arbitrary Lagrangian-Eulerian)
  • Heat Transfer, thermal modelling of buildings and refrigeration and air-conditioning
  • Computational software development (CMISS and OpenCMISS)

Selected publications and creative works (Research Outputs)

  • Greybe, D., Boland, M. R., Wu, T., & Mithraratne, K. (2017). A finite element model to investigate the effect of ulnar variance on distal radioulnar joint mechanics. International Journal for Numerical Methods in Biomedical Engineering, 33 (2)10.1002/cnm.2790
    URL: http://hdl.handle.net/2292/33692
    Other University of Auckland co-authors: Desney Greybe, Michael Boland
  • Alipour, M., Mithraratne, K., & Fernandez, J. (2017). A diffusion-weighted imaging informed continuum model of the rabbit triceps surae complex. Biomechanics and Modeling in Mechanobiology10.1007/s10237-017-0916-4
    Other University of Auckland co-authors: Massoud Alipour, Justin Fernandez
  • Safaei, S., Bradley, C. P., Suresh, V., Mithraratne, P., Muller, A., Ho, H., ... Chase, J. G. (2016). Roadmap for cardiovascular circulation model. The Journal of Physiology, 594 (23), 6909-6928. 10.1113/jp272660
    Other University of Auckland co-authors: Peter Hunter, Harvey Ho, Soroush Safaei, Christopher Bradley, Vinod Suresh
  • Greybe, D., Boland, M. R., Wu, T., & Mithraratne, K. (2016). Examining the influence of distal radius orientation on distal radioulnar joint contact using a finite element model. International journal for numerical methods in biomedical engineering, 32 (11).10.1002/cnm.2766
    Other University of Auckland co-authors: Desney Greybe, Michael Boland
  • Greybe, D., Boland, M. R., & Mithraratne, K. (2016). Vector-based forearm rotation moment arms - A sensitivity analysis. Medical Engineering and Physics, 38 (10), 1109-1114. 10.1016/j.medengphy.2016.07.012
    URL: http://hdl.handle.net/2292/33690
    Other University of Auckland co-authors: Desney Greybe, Michael Boland
  • Matsui, H., Hunt, G. R., Oberhofer, K., Ogihara, N., McGowan, K. J., Mithraratne, K., ... Izawa, E.-I. (2016). Adaptive bill morphology for enhanced tool manipulation in New Caledonian crows. Scientific reports, 610.1038/srep22776
  • Shim, V. B., Besier, T. F., Lloyd, D. G., Mithraratne, K., & Fernandez, J. F. (2016). The influence and biomechanical role of cartilage split line pattern on tibiofemoral cartilage stress distribution during the stance phase of gait. Biomechanics and modeling in mechanobiology, 15 (1), 195-204. 10.1007/s10237-015-0668-y
    Other University of Auckland co-authors: Vickie Shim, Thor Besier, Justin Fernandez
  • Greybe, D. G., Boland, M. R., & Mithraratne, P. (2016). Forearm kinematics and its consequence for muscle moment arms. Paper presented at 22nd Annual Scientific Meeting of the Australian & New Zealand Orthopaedic Research Society, Melbourne, Australia. 13 October - 15 October 2016.
    Other University of Auckland co-authors: Desney Greybe, Michael Boland


Contact details

Primary location

Level 1, Room 127
New Zealand

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