—基于遗传算法的铁路客车地板结构优化设计与仿真

本文提出了基于遗传算法对工程结构进行截面尺寸优化设计和仿真的新方法。利用遗传算法在寻优过程中不要求梯度计算这一优良的特性，将它与结构有限元分析和ＣＡＤ技术有机地结合在一起，实现了在ＣＡＤ环境下对铁路客车一种地板结构截面尺寸设计计算、优化及结果仿真。本文所提出的方法不仅简单易行而且容易推广到更复杂的工程结构截面尺寸优化问题。

Optimization Design and Simulation of the Floor Plate Structure Used in A Railway Passenger Train Based on Genetic Algorithm

Based on genetic algorithm,this paper presents a new method for optimizing desing of thecross-section size of an engineering structure.Because gradient calculation is not needed in search bygenetic algorithm,we combine finite element method with genetic algorithm under a CAD environment tosolve the sizing optimization problem of a floor plate structure used in a railway passenger train and givesome simulation results.The method proposed in this paper is simple and can be adopted in more compli-cated structure.