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首页> 外文期刊>Mecanique & industries >Dynamic behavior of an impacted plate of metal, experimentation and numerical study of the filtering effect of the integration algorithm on the highest numerical frequencies
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Dynamic behavior of an impacted plate of metal, experimentation and numerical study of the filtering effect of the integration algorithm on the highest numerical frequencies

机译：冲击金属板的动力学行为，积分算法对最高数值频率滤波效果的实验和数值研究

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摘要

This work deals with the behavior of structures under dynamic loading such as crash or impacts. In a first part we present an experimental study of shipbuilding steel plates subjected to a transverse impact. An original experimental device was developed and makes it possible to reproduce impact speeds observed for collisions of vehicles. The comparison of the experimental and numerical results allows us to explain the observed phenomena and particularly the evolution of the flexural strain along the plate. The objective of the second part is the comparative study of various algorithms of explicit temporal integration used in dynamic calculations. The study focuses on the ability of the different numerical schemes on the filtration of the numerical high frequencies due to space discretization by finite elements. To this end, the effect of the parameters of the various models is evaluated in relation to the critical time step value of calculus.
机译：这项工作处理结构在动态载荷下的行为，例如碰撞或撞击。在第一部分中，我们介绍了承受横向冲击的造船钢板的实验研究。开发了原始的实验设备，可以再现车辆碰撞时观察到的碰撞速度。实验结果和数值结果的比较使我们能够解释观察到的现象，尤其是沿板的弯曲应变的演变。第二部分的目的是对动态计算中使用的各种显式时间积分算法进行比较研究。该研究着重于不同数值方案对由于有限元空间离散化而产生的高频数字滤波的能力。为此，根据微积分的关键时间步长值评估了各种模型的参数的影响。

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