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Shape optimization under fatigue using continuum damage mechanics

机译:使用连续损伤机制优化疲劳下的形状

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摘要

An introduction and overview of the developments in shape optimization for fatigue problems is given, beginning with the main ideas in the field of static shape optimization. The use of numerical tools together with the incorporation of non-linear material properties in the continuum mechanics design has led to new possibilities for the analysis of fatigue behaviour in mechanical engineering structures. Based on publications by Lemaitre and Chaboche, the material behaviour is described by defining different partial differential equation systems on micro-scale and meso-scale. From this an optimal algorithm results for the shape optimization of mechanical engineering structures using continuum damage mechanics. Our numerical and experimental tests show a significant increase of lifetime in comparison to classical shapes.
机译:从静态形状优化领域的主要思想开始,对疲劳问题的形状优化的发展进行了介绍和概述。数值工具的使用以及在连续体力学设计中纳入非线性材料特性,为分析机械工程结构的疲劳行为带来了新的可能性。根据Lemaitre和Chaboche的出版物,通过在微观和中观尺度上定义不同的偏微分方程组来描述材料的行为。由此得出了使用连续损伤力学对机械工程结构进行形状优化的最佳算法。我们的数值和实验测试表明,与传统形状相比,使用寿命显着增加。

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