车用铝合金榫卯结构优化设计
Optimal Design of Automobile Aluminum Alloy Mortise and Tenon Structure
蒋益萍 1周金宇 2庄百亮3
作者信息
- 1. 江苏理工学院机械工程学院,江苏常州 213001
- 2. 金陵科技学院机电工程学院,江苏南京 211169
- 3. 机械科学研究总院江苏分院有限公司,江苏常州 213164
- 折叠
摘要
根据车用榫卯结构连接的特点,设计一种分析车用榫卯半刚性方法.在汽车车架优化过程中引入弹簧单元,并联合调用APDL和MATLAB进行二次多项式响应面拟合,将拟合后最大应力与结构质量响应面加权最小作为设计目标,运用线性加权算法获得满足工况要求下的最优解.研究表明:车用榫卯优化方案使其最大应力降低10.8％,满足极限应力约束时车架质量降低6.4％,能量吸收提高7.48％,在提高汽车安全性能的同时实现了轻量化.
Abstract
A semi-rigid method for analyzing mortise and tenon joints was designed according to the characteristics of mortise and tenon joints of vehicles.Spring element was introduced in the optimization process of automobile frame,and the quadratic polynomial response surface was fitted by APDL and MATLAB.The maximum stress and the weight of the response surface of the structure mass after fitting were taken as the design objective,and the optimal solution was obtained by using linear weighting algorithm.The reserch shows that the maximum stress is reduced by 10.8％and the frame mass is reduced by 6.4％and the energy absorption is increased by 7.48％when the ultimate stress constraint is met,which not only improves the safety performance of the vehicle,but also realizes its lightweigt.
关键词
汽车/榫卯/半刚性/响应面Key words
automobile/mortise and tenon/semi-rigidness/response surface引用本文复制引用
基金项目
国家自然科学基金项目(52075232)
江苏省自然科学基金项目(BK20201112)
江苏理工学院研究生实践创新计划项目(XSJCX21_2)
出版年
2024
国家科技期刊平台
NSTL
万方数据