Numerical and experimental investigation of radial impacts on a half-circular plate
Numerical and experimental investigation of radial impacts on a half-circular plate
复制标题
DOI：
10.1023/a:1022991831100
复制
发表时间：
2003-04-01
影响因子：
3.4
通讯作者：
Eberhard, P
中科院分区：
文献类型：
--
作者：
Seifried, R;Hu, B;Eberhard, P
对于碰撞问题的研究，已有大量的数值模拟，然而，这些模拟结果与物理现实的对应程度还需要进一步的研究。本文的目的是检查是否使用有限元方法的冲击响应的数值计算结果和使用先进的测量仪器的实验结果吻合良好，以及如何影响数值计算结果的一些非物理选择的模拟参数的数值方法。为了这些目的，一个钢球与一个半圆形铝板碰撞的径向冲击被用作一个例子，并进行了数值和实验研究。为了研究不同的模拟参数的影响和不同的接触算法的效率，一个钢球与一个铝杆碰撞的影响，首先被认为是一个测试用例。然后，这些结果被用作更复杂的径向影响建模的指导方针。与实验结果的比较表明，在适当选取模拟参数的情况下，对中心和偏心碰撞的计算结果与实验结果吻合较好。
For investigations of impact problems, there are a lot of numerical simulations available, however, how well these simulation results correspond to the physical reality needs still further studies. The goal of this paper is to examine whether numerical results for impact responses using the finite element method and experimental results using advanced measurement instruments agree well with each other and how numerical results are influenced by some non-physical chosen simulation parameters in the numerical approach. For these purposes, the radial impact of a steel sphere colliding with a half-circular aluminum plate is used as an example and investigated both numerically and experimentally. In order to investigate the influence of different simulation parameters and the efficiency of different contact algorithms, the impact of a steel sphere colliding with an aluminium rod is first considered as a test case. Then, these results are used as guidelines for modeling the more complex radial impact. A comparison with experimental results shows for the centric and eccentric impact good agreement to the computed results if the simulation parameters are chosen appropriately.