کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
509748 | 865705 | 2013 | 13 صفحه PDF | دانلود رایگان |
• A strategy for building gradient-based metamodels is proposed.
• A multiparametric strategy is used for solving assembly problems.
• Significant reduction of the computation time is obtained.
• Gradient-based kriging and RBF approximations are introduced.
• Building cost and quality are compared on analytical and mechanical test cases.
This paper deals with the building of a gradient-based metamodel using a dedicated strategy for solving structural assemblies problems. This work is the first part of a two-levels global optimization strategy. The general objective is to reduce computation costs; here, we focus on the costs which are associated with the generation of the metamodel. Our goal is achieved through the introduction of two main elements: what we call a “multiparametric strategy” based on the LATIN method, which reduces the computation costs when the parameters vary, and the use of a cokriging metamodel taking gradients into account. Several examples illustrate the efficiency of these two elements.
Journal: Computers & Structures - Volume 124, August 2013, Pages 61–73