A COMPREHENSIVE BIOMECHANICAL MODEL USING STRENGTH, STABILITY, AND COF CONSTRAINTS TO PREDICT HAND FORCE EXERTION CAPABILITY UNDER SAGITTALLY SYMMETRIC STATIC CONDITIONS

A new mathematical biomechanics] model has been developed to comprehensively estimate feasible hand force exertion capability under sagittally symmetric static conditions. In the model, a set of 15 linear constraint equations has been developed in three constraint classes: coefficient of friction, stability, and strength. This set of constraints defines a feasible solution space for combinations of horizontal and vertical forces exerted by the hands. Inputs to the model include posture, anthropometry, strength capability, coefficient of static friction, and gender. Examples of lifting and pushing demonstrate some features and advantages of the model. The most promising aspect of this model appears to be its ability to comprehensively combine multiple factors that can affect hand force exertion capability.

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