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Designing of Elastoplastic Adaptive Truss Structures with the Use of Particle Swarm Optimization

机译:基于粒子群算法的弹塑性自适应桁架结构设计

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摘要

In the paper we demonstrate how Particle Swarm Optimization (PSO) can be employed to solve the Adaptive Impact Absorption (AIA) problem. We consider a truss structure which is subjected to impact loads. Stiff bars can be replaced by elastoplastic fuses which control theirs dynamical response. The point of optimization is to maximize or minimize a given objective function by redesigning the structure. This is realized by redistributing the initial mass, finding proper fuse localizations and adjusting, in real-time, the elastoplastic limits. Comparing to the previous results, we show that PSO is capable of achieving results at least as good as gradient-based optimization, having at the same time much larger flexibility regarding the definition of the objective function. This gives significantly broader field of potential applications. In particular, we present how PSO can be used to solve the simultaneous optimization problem: mass redistribution and fuse positioning for a set of expected, various impacts.
机译:在本文中,我们演示了如何使用粒子群优化(PSO)解决自适应冲击吸收(AIA)问题。我们考虑一个承受冲击载荷的桁架结构。可以用控制其动态响应的弹塑性保险丝来代替刚性杆。优化的重点是通过重新设计结构来最大化或最小化给定的目标函数。这是通过重新分配初始质量,找到合适的熔断器位置并实时调整弹塑性极限来实现的。与以前的结果比较,我们表明PSO至少可以达到与基于梯度的优化一样好的结果,同时在目标函数的定义上具有更大的灵活性。这为潜在的应用程序提供了广阔的领域。特别是,我们介绍了如何使用PSO解决同步优化问题:针对一系列预期的各种影响的质量重新分配和保险丝定位。

著录项

  • 来源
    《Mathematical Problems in Engineering》 |2015年第21期|652824.1-652824.14|共14页
  • 作者

    Szklarski Jacek; Wiklo Marcin;

  • 作者单位

    Polish Acad Sci, Inst Fundamental Technol Res, PL-02106 Warsaw, Poland;

    Kazimierz Pulaski Univ Technol & Humanities, PL-26600 Radom, Poland;

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  • 正文语种 eng
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