代理模型在结构动力学优化设计中的应用研究

A Study of Meta-model in Structural Dynamics Optimization Design

在结构动力学优化设计中,使用代理模型是提高计算效率的主要方法。研究实现了代理模型中常用的几种近似方法,以典型函数算例和结构动力学优化为例,建立了对应的代理模型,并就不同代理模型精度进行了对比。研究表明,一些代理模型具有更高的精度和更广泛的适用性,并针对结构动力学优化中的问题,给出选用代理模型的一些建议。

In structural dynamics optimization design, the main method to improve computational efficiency is using Meta - model. Some common approximate methods of Meta - model were briefly discussed. On the numerical function and structural dynamics optimization design examples, corresponding Meta - models were constructed and the modeling accuracy with deterministic simulation of different approximate methods was compared. Researches show that, in different problems, higher accuracy and more extensive applicability can be a- chieved by using some of these Meta - models. Aiming at problems in structural dynamic optimization, some suggestions on choosing approximate method of Meta- model are given.