基于有限元分析的发动机活塞轻量化设计  

Lightweight Design of Engine Piston Based on Finite Element Analysis

作　　者：林贵堃 陈细妹[1] 闲家明 黄俊贤 曾海鹏 韩佳霖 LIN Guikun;CHEN Ximei;XIAN Jiaming;HUANG Junxian;ZENG Haipeng;HAN Jialin(Fujian Polytechnic of Water Conservancy and Electric Power,Yongan 366099,China;School of Information&Intelligent Mechanical&Electrical Engineering,Xiamen Huaxia University,Xiamen 361024,China)

机构地区：[1]福建水利电力职业技术学院,福建永安366099 [2]厦门华厦学院信息与智能机电学院,福建厦门361024

出　　处：《机械制造与自动化》2024年第3期239-242,248,共5页Machine Building & Automation

基　　金：福建省教育厅中青年教师教育科研项目(JAT210592,JAT220585);厦门华厦学院育苗基金项目。

摘　　要：在有限元分析的基础上,采用材料替换及结构拓补优化的方法对某发动机活塞进行轻量化设计。利用SolidWorks建立活塞三维模型,将活塞原始材料1015铝合金替换为7075铝合金;运用Altair Inspire有限元分析软件分别对两种材料的活塞进行静力学分析及模型质量测量,采用拓扑优化方法进行结构优化。仿真结果表明:优化后活塞质量减轻了64%,活塞的最大应力减小了12%,安全系数提升了3.7。Based on the finite element analysis,the lightweight design of an engine piston is carried out by the methods of material replacement and structural topology optimization.SolidWorks is used to establish a 3D model of the piston.1015 aluminum alloy,the original material of the piston,is replaced by 7075 aluminum alloy.Altair Inspire is applied to conduct static analysis and model mass measurement for the pistons of the two materials,and structure optimization is carried out by topology optimization method.The simulation results show that after material replacement and structure optimization,the piston mass is reduced by 64%,the maximum stress of the piston reduced by 12%,and the safety factor increased by 3.7.

关 键 词：发动机活塞 有限元分析 轻量化 应力分析 

分 类 号：TH457[机械工程—机械制造及自动化]