摘要
为提高某挖掘机动力总成悬置系统隔振性能,以悬置系统的六阶固有频率和解耦率为优化目标,以悬置静刚度为设计参数,对悬置系统固有频率和解耦率进行优化。结果表明,优化后悬置系统各阶固有频率分配更加合理,垂直方向和绕曲轴方向解耦率得到显著提高。按照悬置优化方案制作样件,装车测试得到怠速和最高转速工况下的隔振率达到85%,基本满足工程实际要求。提出的优化方法对改善工程车辆动力总成悬置系统隔振性能具有一定的参考价值。
The frequency and decoupling ratio of an excavator＇s powertrain mounting system（PMS）is optimized in order to improve the isolation performance. The mount stiffness and position are treated as design variables. The optimization results show that optimal frequencies are more rational,and the optimal decoupling ratios in Z and Roll directions are increased significantly. Sample mounts are manufactured according to the optimization results and the real vehicle test is conducted for two cases of idle and maximum engine rotational speed. Experimental results show that the isolation ratios under two cases achieve about 85%,which meets the actual engineering requirements. The optimization method presentedis of valuable reference for improving vibration isolation performance of engineering machinery and equipment PMS.
出处
《机械设计与制造》
北大核心
2015年第5期178-180,共3页
Machinery Design & Manufacture
基金
中央高校基本科研业务费专项资金资助项目(D2115540)
关键词
挖掘机
动力总成悬置系统
隔振性能
优化设计
Excavator
Powertrain Mounting System
Isolation Performance
Optimization Design
