Dynamic Analysis and Fatigue Life Prediction of a Very Flexible Component in Multibody System

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Recently, the finite element absolute nodal coordinate formulation(ANCF) was developed for large deformation analysis of flexible bodies in multi-body dynamics. This formulation is based on finite element procedures and the general continuum mechanics theory to represent elastic forces. In this paper, a computational method, which predicts the dynamic and structural properties of a very flexible beam in a multibody system, is presented based on Euler-Bernoulli beam theory and ANCF. In order to consider the dynamic interaction between a continuous large deformable beam and a rigid multibody system, a combined system equations of motion was derived by adopting absolute nodal coordinates and rigid body coordinates. The efficiency and reliability of the computational results are verified by comparison with a commercial program. These methods can be applied for predicting the dynamic stress and fatigue life of the wire harness used in a robot system. The process of predicting the fatigue life using the proposed method in this paper may be applied to continuous mechanical parts of various dynamic systems.

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi

Pages:

1597-1600

DOI:

10.4028/www.scientific.net/KEM.321-323.1597

Citation:

J. W. Yoon et al., "Dynamic Analysis and Fatigue Life Prediction of a Very Flexible Component in Multibody System", Key Engineering Materials, Vols. 321-323, pp. 1597-1600, 2006

Online since:

October 2006

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Price:

$35.00

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