汽车制动硬管随机振动环境的模拟与分析  

Simulation and Analysis of Random Vibration Environment for Auto Brake Pipe

作　　者：方晶[1] 郑松林[1] 冯金芝[1] 陈铁[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《上海理工大学学报》2015年第3期257-262,268,共7页Journal of University of Shanghai For Science and Technology

基　　金：国家"十二五"863重大项目(2012AA110701);国家自然科学基金资助项目(50875173;51375313);上海市科委基础研究重点项目(11140502000;13JC1408500);上海市教委重点学科建设资助项目(J50503);上海市研究生创新基金资助项目(JWCXSL1302)

摘　　要：以汽车制动硬管为研究对象,基于随机振动下的载荷特征,进行完全模拟道路试验的室内台架振动可靠性试验.根据随机振动理论分析相关陪试件的频域特性,提出了一种简化的台架振动环境模拟方案.基于该方案进行台架试验,通过自功率谱密度和累积能量分布两方面的对比分析,证明该简化方案在保证台架试验准确性的基础上能够更加高效地进行室内试验.最后总结相关陪试件对制动硬管振动特性的影响,并对室内台架振动模拟试验进行可靠性评价,为结构特殊的零部件搭建振动试验台架提供工程经验和技术借鉴.Based on the load characteristics in random vibration environment, the reliability of an auto blake pipe was investigated. According to the theory of random vibration, the reliability simulation test on a vibration bench was carried out to analyze the vibration characteristics of the related s .po：imens in frequency domain. Then a simplified vibration environment simulation scheme of the bench test was put forward and implemented to analyze the signals from the aspects of power spectral density and accumulative energy distribution. The study proves that with the simplified scheme, the test can be done more efficiently if the accuracy of the bench test is guaranteed. The influences of the accompanying test specimens on the vibration characteristics of the brake pipe and the reliability assessment of the vibration bench test were summed up. The results provide engineering experiences and technical references m the construction of vibration bench test with similar characteristics.

关 键 词：制动硬管 随机振动环境 振动特性 模拟实验 可靠性 

分 类 号：U467.3[机械工程—车辆工程]