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Multicriteria decision making with parallel clusters in structural topology optimization

机译:结构拓扑优化中基于并行聚类的多准则决策

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摘要

Generating Pareto surfaces is a well accepted technique in multiattribute decision making. Alternatively, an interactive approach may be used where designs on the Pareto frontier are compared or rank ordered and newer designs are generated to maximize an implicit utility function. When each function evaluation involves a finite element analysis or other type of simulation, multicriteria approaches can become highly computationally expensive. In this context, techniques for reducing computing time using parallel processors are discussed. A structural topology problem is chosen as a test problem and Pareto surfaces are generated using two different clusters. Near linear speed-ups and high efficiencies are observed on both the clusters. It is possible to integrate this methodology into computer programs that assist design engineers in the industry leading so that less turn around time is required to make critical decisions.
机译:生成帕累托曲面是多属性决策中广为接受的技术。可替代地,可以使用交互式方法,在该方法中比较帕累托边界上的设计或按等级排序,并生成新的设计以最大化隐式效用函数。当每个功能评估都涉及有限元分析或其他类型的模拟时,多准则方法可能会在计算上变得非常昂贵。在这种情况下,讨论了使用并行处理器减少计算时间的技术。选择结构拓扑问题作为测试问题,并使用两个不同的簇生成帕累托曲面。在两个集群上都观察到接近线性的加速和高效率。可以将这种方法集成到计算机程序中,以帮助业界领先的设计工程师,从而减少做出关键决策所需的周转时间。

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