摘要
渐进结构优化法（Ｅｖｏｌｕｔｉｏｎａｒｙ Ｓｔｒｕｃｔｕｒａｌ Ｏｐｔｉｍｉｚａｔｉｏｎ，简称ＥＳＯ）是近年来兴起的一种解决各类结构优化问题的数值方法。它是基于这样一个简单概念：通过将结构中无效或低效的材料一步步去掉，剩下的结构将逐渐趋于优化。ＥＳＯ的特点在于简单，通用，优化的结构可为桁架，刚架，板壳或三维连续体，优化的约束条件包括应力，刚度，位移，频率及临界压力。本文阐述渐进结构优化法的基本原理和具体步骤，并以一系列算例演示该法的计算机实施过程，文章最后介绍了ＥＳＯ的最新进展。
Evolutionary Structural Optimisation (ESO) is a simple and robust numerical methodfor optimization problems of various structures. The basic idea of ESO is that by slowly removinginefficient material, the residual structure evolves towards an optimum. The significance of ESO isits simplicity and generality. It can be used for a wide range of structures including trusses, frames,plates/shells and 3D continua. The optimization constraints can be stresses,stiffnesses/displacements, frequencies or buckling loads.This paper introduces the theories,procedures and the latest techniques of ESO. A number of examples of engineering designproblems are presented to demonstrate the capability and effectiveness of ESO.
出处
《工程力学》
EI
CSCD
北大核心
1999年第6期70-81,共12页
Engineering Mechanics
关键词
渐进结构优化法
有限元法
渐进法
计算力学
structural optimization
finite element method
evolutionary method
computationalmechanics
