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A method for treating damage related criteria in optimal topology design of continuum structures

机译:连续体结构最佳拓扑设计中与损伤相关准则的处理方法

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In this paper we present a formulation of the well-known structural topology optimization problem that accounts for the presence of loads capable of causing permanent damage to the structure. Damage is represented in the form of an internal variable model which is standard in continuum damage mechanics. Here we employ an interpretation of this model as an optimum remodeling problem for maximal compliance over all damage distributions, making also the analysis of the damage model a study in structural optimization. The damage criterion can be included in the optimal design model in a number of ways. We present results for finding the optimal topology of the reinforcement of an existing design with the goal of minimizing damage. Also, we treat the problem of finding the topology of a structure where we seek maximal stiffness under service loads with a constraint on the amount of damage which occurs under a separate set of damage loads. [References: 17]
机译:在本文中,我们提出了众所周知的结构拓扑优化问题的解决方案,该问题考虑了能够对结构造成永久损坏的载荷的存在。损害以内部变量模型的形式表示,这是连续损害机制中的标准。在这里,我们将这种模型解释为一种最佳重塑问题,以在所有损伤分布上获得最大的顺应性,并使损伤模型的分析成为结构优化中的一项研究。可以通过多种方式将损坏标准包括在最佳设计模型中。我们提出的结果是,为了以最小化损坏为目标,找到现有设计的增强结构的最佳拓扑。同样,我们处理的问题是找到结构的拓扑结构,在这种结构中我们要在使用载荷下寻求最大刚度,并限制在单独一组损伤载荷下发生的损伤量。 [参考:17]

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