Abstract
A nonlinear finite element formulation for flexible multibody dynamics is summarized. In this formulation, it is required that the element shape functions can describe large rigid body translations. Of particular interest in the dynamics and control of flexible multibody systems is the concept of equivalent systems of forces. The formulation of the generalized forces and the nonlinear dynamic equations of substructures in flexible multibody dynamics is discussed and the validity of using the linear theory of elastodynamics in mechanical system applications such as tracked vehicles is reexamined.
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