沙滩车动力总成悬置系统模态分析及优化  

Modal Analysis and Optimization of Powertrain Suspension System in New Beach Vehicle

作　　者：朱红霞 楼贵东 卓耀彬[2] 柳维好 游张平[2] 江洁[2] ZHU Hongxiao;LOU Guidong;ZHUO Yaobin;LIU Weihao;YOU Zhangping;JIANG Jie(Zhejiang Taotao Vehicles Co.,Ltd.,Lishui 323000,China;College of Technology,Lishui University,Lishui 323000,China)

机构地区：[1]浙江涛涛车业股份有限公司,浙江丽水323000 [2]丽水学院工学院,浙江丽水323000

出　　处：《机械工程师》2021年第6期125-127,共3页Mechanical Engineer

基　　金：浙江省自然科学基金项目(LZ21F020003,LY20E050002);浙江省基础公益研究计划项目(LGG18E050001);丽水市重点研发项目(2016ZDYF15)。

摘　　要：采用Abaqus软件,建立包括动力总成、车身框架、悬置支架和缓冲套筒等关键结构的新型沙滩车动力总成悬置系统有限元分析模型;经过模态分析,计算得到发动机最高工作频率范围内的共5阶模态频率和振型,并分析各阶模态形成的原因;分析得第3阶模态振动方向与活塞运动方向相近,易引起车身框架的共振,是悬置系统结构的薄弱环节;针对此薄弱环节,对车身框架进行优化,通过优化前后的悬置系统模态分析结果的对比分析,达到较好的优化效果;动力总成悬置系统模态分析结果为发动机控制策略优化提供参考,也是后续的动力总成悬置系统动力学分析和减振优化的基础。The finite element analysis model of the new ATV powertrain suspension system including powertrain,body frame,mount bracket and buffer sleeve is established by using Abaqus software.Through modal analysis,the five modes frequencies and modes of vibration within the maximum operating frequency range of the engine are calculated,and the causes of the formation of each mode are analyzed.Based on analysis,the vibration direction of the third mode is close to that of the piston,which is easy to cause the resonance of the body frame,and is the weak link of the suspension system structure.Aiming at this weak link,the body frame is optimized.By comparing the modal analysis results of the suspension system before and after optimization,the optimization achieves good results.The modal analysis results of the powertrain suspension system provide reference for engine control strategy optimization,and are also the basis for subsequent dynamic analysis and vibration reduction optimization of the powertrain suspension system.

关 键 词：动力总成 悬置系统 有限元模型 模态分析 

分 类 号：TP113.1[自动化与计算机技术—控制理论与控制工程]