A superelement model based on Lagrangian coordinates for multibody system dynamics

This paper presents a general-purpose superelement model for computer-aided analysis of multibody systems subject to kinematic constraints. The superelement concept is defined and a method based on Lagrangian coordinates is developed to obtain superelement parameters. Differential equations of motio...

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Bibliographic Details
Published inComputers & structures Vol. 37; no. 6; pp. 957 - 966
Main Authors Agrawal, O.P., Chung, S.L.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1990
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ISSN0045-7949
1879-2243
DOI10.1016/0045-7949(90)90008-P

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Summary:This paper presents a general-purpose superelement model for computer-aided analysis of multibody systems subject to kinematic constraints. The superelement concept is defined and a method based on Lagrangian coordinates is developed to obtain superelement parameters. Differential equations of motion of a system consisting of superelements and other elements is developed. Constraints internal to the superelements do not appear in the resulting differential equations. This leads to a set of differential and algebraic equations that has fewer dimensions and that requires less CPU time than the existing general-purpose schemes. Two examples are presented to demonstrate the feasibility and efficiency of the model.
ISSN:0045-7949
1879-2243
DOI:10.1016/0045-7949(90)90008-P