Sensitivity analysis of flexible multibody systems based on absolute nodal coordinate formulation

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (24) : 89-92.

WANG Tiecheng1 ，CHEN Guoping 1 ，SUN Dongyang2

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Abstract

For multiple design variables, adjoint variable method is applied in sensitivity analysis of flexible multibody systems based on absolute node coordinate formulation. In order to verify the computational efficiency of the method, flexible pendulum under gravity is studied by the direct differentiation method and the adjoint variable method. The results show that the errors between the two methods are small, and the adjoint variable method has higher computational efficiency with increase of design variables.

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Multibody system / Sensitivity / Absolute node coordinates formulation / Adjoint variable method

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WANG Tiecheng1,CHEN Guoping 1,SUN Dongyang 2. Sensitivity analysis of flexible multibody systems based on absolute nodal coordinate formulation[J]. Journal of Vibration and Shock, 2015, 34(24): 89-92

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