摘要
介绍了如何将时域加速度信号转换成冲击响应谱(SRS)和疲劳损伤谱(FDS)以及冲击响应谱和疲劳损伤谱的应用。以某车型的冷却模块为研究对象,提出了通过采集冷却模块的路谱加速度时域信号转化成PSD控制台架振动耐久试验的方法。在失效模式和疲劳损伤等效的前提下,实现了试车场耐久规范与台架耐久规范的等效关联,且大大缩短了冷却模块台架试验的时间,解决了冷却模块的台架验证难题。
How to convert the acceleration time-domain signal to shock response spectrum （SRS） and fatigue damage spectrum （FDS） were described as well as their application, Taking a vehicle cooling module as the research object, a new vibration rig test method was presen- ted by which the acceleration time-domain signal of cooling module was converted to power spectrum density （PSD）. On the premise of equiva- lent fatigue damage and fatigue mode, the equivalent correlation between the proving ground durability test and the rig durability test can be re- alized. Besides, the rig test time of cooling module is greatly shortened, so the problem of rig test validation can be solved.
出处
《汽车零部件》
2015年第4期33-36,52,共5页
Automobile Parts
关键词
冷却模块
功率谱密度
冲击响应谱
疲劳损伤谱
极限响应谱
Cooling module
Power spectrum density （PSD）
Shock response spectrum （SRS）
Fatigue damage spectrum （FDS）
Extreme response spectrum （ERS）
