An Efficient Implementation of the Recursive Approach to Flexible Multibody Dynamics |
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Authors: | J Znamenáček M Valášek |
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Affiliation: | (1) Department of Mechanics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Karlovo namesti 13, 121 35 Prague, Czech Republic |
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Abstract: | This paper deals with the efficient extension of the recursive formalism (articulated body inertia) for flexible multibody systems. Present recursive formalisms for flexible multibody systems require the inversion of the mass matrix with the dimension equal to the number of flexible degrees of freedom of particular bodies. This is completely removed. The paper describes the derivation of equations of motion expressed in the local coordinate system attached to the body, then the discretization of these equations of motion based on component mode synthesis and FEM shape functions and, finally, two versions of the new recursive formalism. |
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Keywords: | flexible multibody system recursive formalism articulated body inertia component mode synthesis computational complexity |
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