A Topology Optimization Scheme for Crash Loaded Structures Using Topological Derivatives

A Topology Optimization Scheme for Crash Loaded Structures Using Topological Derivatives
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使用拓扑导数的碰撞加载结构拓扑优化方案

DOI:
10.1007/978-3-319-67988-4_120
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
A. Schumacher
A. Schumacher
中科院分区:
--
文献类型:
--
作者:
K. Weider;A. Schumacher

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本文提出了一种适用于碰撞载荷结构的拓扑优化方法。该方法将拓扑导数的数值计算与水平集方法相结合。本文通过对垂直应力作用下开孔平板壳的微尺度研究,导出了一个拓扑导数元模型。该元模型为宏观力学问题的优化提供了灵敏度。使用水平集方法、线性映射方案和滤波的迭代体积减小允许碰撞模拟具有平滑边界。算例验证了优化方案的适用性。
This paper deals with a topology optimization scheme for crash loaded structures. The presented approach combines the numerical calculation of Topological Derivatives with a level-set method. In a microscale investigation on a planar shell with a hole under perpendicular stresses a meta-model for the Topological Derivatives is derived. This meta-model provides the sensitivities for the optimization of the macroscale mechanical problem. The iterative volume reduction with a level-set method, a linear mapping scheme and filtering allows the crash simulation with smooth boundaries. An academic example illustrates the applicability of the optimization scheme.
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
Katrin Weider;A. Schumacher
通讯作者: A. Schumacher