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Dynamic Modeling of Contact Surfaces

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  • Dynamic Modeling of Contact Surfaces

    Dear biomch-l group,

    Is anyone aware of any work that has been done in which a numerical model
    of a joint was created for dynamic simulation, which utilized
    three-dimensional geometry from surface meshes to derive the articulating
    forces. I am trying to develop a model for some simplier articular
    surfaces, such as in the spine (which are relatively flat), for studying
    motion of the joint due to high acceleration or impact. The bones themselves
    would be considered rigid, as a first approximation, and I would be
    generating the equations of motion to describe the dynamic condition.

    I am trying to use a method similar to that outlined in Shirazi-Adl
    et. al. "A Finite Element Study of a Lumbar Motion Segment Subjected to
    Pure Sagittal Plane Moments," J. Biomechanics, Vol. 19, No. 4,
    pp.331-350, 1986, where points of contact on one body are checked against
    target planes on the other body, but this seems to work well only for
    quasi-static or slow motion conditions.

    Has anyone had any success or know of someone that has had success with
    this type of problem?

    Any help would be appreciated and I will post a summary of replies.


    Cliff Smith

    ************************************************** **
    Cliff Smith
    Research Faculty

    Life College
    1269 Barclay Circle
    Marietta, GA 30060

    Phone: (770) 426-2636
    FAX: (770) 425-5496
    ************************************************** **