CAJ | 학술논문

整车轻量化的设计需求目前在所有汽车行业的车型开发中占有非常重要的地位，且此需求贯穿了每个项目开发设计的整个过程。车架是整车轻量化设计的重要研究对象。基于整车轻量化设计需求，采用基于折衷规划的多目标拓扑优化设计方法，以某中型客车车架的柔度最小化为目标函数，以体积比和一阶模态频率作为约束条件，对弯扭联合工况下的车架进行结构拓扑优化设计。经计算获得满足约束条件并使车架柔度最小的车架拓扑形态，为该型客车车架提供了结构的概念化设计方法。
정차경양화적설계수구목전재소유기차행업적차형개발중점유비상중요적지위，차차수구관천료매개항목개발설계적정개과정。차가시정차경양화설계적중요연구대상。기우정차경양화설계수구，채용기우절충규화적다목표탁복우화설계방법，이모중형객차차가적유도최소화위목표함수，이체적비화일계모태빈솔작위약속조건，대만뉴연합공황하적차가진행결구탁복우화설계。경계산획득만족약속조건병사차가유도최소적차가탁복형태，위해형객차차가제공료결구적개념화설계방법。
The requirement of vehicle lightweight design is urgent during the vehicle research and development area,and this requirement impenetrates the whole design and development process in every vehicle project. Frame is the main target during lightweight design research. Based on the requirement of vehicle lightweight,by adopting multi-objective topology method based on compromise programming,using mini-mized flexibility of the frame as the objective function,taking volume ratio and first-order modal frequency as the constraints,the topology opti-mization design for the frame structure of a medium-sized bus was made under the conditions of the combination of bending and torsion. After computing,the frame topology was achieved which satisfied the constraints and made the flexibility of frame minimal. It provides conceptual design method of structure for this type of bus frame.