基于拓扑优化的汽车座椅骨架轻量化设计  

Lightweight design of car seat frame based on topology optimization

作　　者：葛孩 李国平[1] 娄军强[1] 熊文军 肖作华 GE Hai;LI Guoping;LOU Junqiang;XIONG Wenjun;XIAO Zuohua(School of Mechanical Engineering&Mechanics,Ningbo University,Ningbo 315211,China;Zhejiang Tiancheng Automation Co.,Ltd.,Taizhou 317201,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]浙江天成自控股份有限公司,浙江台州317201

出　　处：《宁波大学学报（理工版）》2023年第6期36-41,共6页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：浙江省自然科学基金(LGF21E050002).

摘　　要：座椅是汽车内饰件中质量较重的一部分,座椅骨架的轻量化设计可以有效地降低座椅整体质量,提高汽车整体性能.本文利用CATIA软件对某乘用车前排座椅骨架进行几何建模,建立座椅骨架的有限元模型,并基于国家标准GB 15083—2006对座椅骨架模型进行有限元分析.然后利用相对密度法的拓扑优化模型对座椅骨架进行轻量化设计,以体积约束下的最小结构柔度为优化目标,通过ABAQUS软件中的TOSCA模块对座椅骨架进行拓扑优化,将优化后的座椅骨架结构在ABAQUS中进行静力学分析.结果显示,在满足座椅结构强度和刚度的情况下,座椅骨架减轻了0.584 kg,减重约4%,实现了座椅轻量化的效果.As a heavier part of the car interior,the lightweight design of the seat frame can effectively reduce the overall weight of the seat and improve the overall performance of the car.Firstly,the geometric modeling of the front seat of a passenger car was carried out by using CATIA software,and the finite element model of the seat was subsequently established.Then,the finite element analysis of the seat model was carried out based on the national standard GB 15083-2019.Taking the minimum structural flexibility under volume constraints as the optimization objective,the lightweight design of the seat frame was implemented by topology optimization model using the relative density method The seat frame topology was optimized through TOSCA module of ABAQUS software and the optimized seat structure statics analysis was further calculated in ABAQUS.Under the condition of sustaining the seat structure strength and stiffness,the seat frame weight is reduced by 0.584 kg,which is about 4%in weight reduction,accomplishing the effect of seat lightweight.

关 键 词：前排座椅骨架 轻量化 拓扑优化 有限元分析 

分 类 号：U463.836[机械工程—车辆工程]