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首页> 外文会议>International Conference on Advanced Nondestructive Evaluation >Dynamic Analysis and Fatigue Life Prediction of a Very Flexible Component in Multibody System
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Dynamic Analysis and Fatigue Life Prediction of a Very Flexible Component in Multibody System

机译：多体系中非常柔性组分的动态分析与疲劳寿命预测

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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.
机译：最近，开发了有限元绝对节点坐标配方（ANCF），用于多体动力学的柔性体的大变形分析。该配方基于有限元程序和一般的连续力学理论来代表弹力。本文基于Euler-Bernoulli光束理论和ANCF，提出了一种计算方法，该计算方法预测多体系中非常柔性光束的动态和结构特性。为了考虑连续大可变形光束和刚性多体系之间的动态相互作用，通过采用绝对节点坐标和刚性体坐标来导出组合系统的运动方程。通过与商业计划的比较来验证计算结果的效率和可靠性。这些方法可以应用于预测机器人系统中使用的线束的动态应力和疲劳寿命。使用本文中所提出的方法预测疲劳寿命的过程可以应用于各种动态系统的连续机械部件。

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