某直列四缸发动机悬置系统模态优化设计  

Optimization and Design of In-line Four Cylinder Engine Mounting System

作　　者：王楷焱 任晓雪[2] WANG Kai-yan;REN Xiao-xue(Shenyang Ligong University,Shenyang 110159,China;Liaoning Provincial College of Communications,Shenyang 110122,China)

机构地区：[1]沈阳理工大学,沈阳110159 [2]辽宁省交通高等专科学校,沈阳110122

出　　处：《内燃机与配件》2021年第9期7-8,共2页Internal Combustion Engine & Parts

基　　金：辽宁省自然科学基金指导计划项目(20180550710);中国博士后科学基金资助项目(2019M651147);辽宁省博士科研启动基金资助项目(2020-BS-156)。

摘　　要：本文针对某四缸发动机模态解耦率较差的问题,对发动机悬置系统模态进行优化设计。首先通过多体动力学软件,建立6自由度发动机悬置系统模型,对模型进行模态分析和计算。以悬置元件的刚度和位置参数为主要设计变量,悬置系统模态能量解耦率为优化目标,采用遗传算法对模型进行优化。优化后,发动机悬置系统的解耦水平有显著提高。Aiming at the problem of poor modal decoupling rate of a four cylinder engine,the modal optimization design of engine mounting system is carried out.Firstly,the model of 6-DOF engine mounting system is established by multi-body dynamics software.The modal analysis of the model is carried out.The stiffness and position parameters of the mounting elements are chosen as the main design variables,and the modal energy decoupling rate of the mounting system is taken as the optimization objective.After optimization,the decoupling level of engine mounting system is improved significantly.

关 键 词：发动机悬置 模态解耦 优化设计 遗传算法 

分 类 号：U464.1[机械工程—车辆工程]