摘要
文章介绍了国内外相关标准中推荐的模拟公路运输的随机振动试验谱。针对实测数据,利用正态容差极限法通过包络处理的基本步骤制定模拟运输试验谱。并根据多体动力学仿真结果提出了一种根据车速、道路等级变化对包络谱进行调整的方法。在制定模拟公路运输的随机振动试验谱时,应当优先选择利用跑车试验数据制定的试验谱,其次选择类似产品的试验谱并适当调整。在不具备以上两种条件的情况下,再选择国内外相关标准中推荐的试验谱。
Three main sources of random vibration test spectra for simulated road transportation tests are discussedin this paper, including the recommended test spectra in the international general standards, and in the Chinese national,military and aerospace standards. The Normal Tolerance Limitation method is used to establish the simulated roadtransportation test spectrum for the field test data, and with a basic procedure to build an envelope. A PSD envelopeadjustment method is proposed for the multibody dynamic simulation according to the speed of the vehicle and the roadgrade. It is indicated that in conducting the simulated road transportation test, the test spectrum from the field test datashould be used first, then the adjusted PSD envelope is chosen from similar products. If both these sources are notavailable, the test spectra from the relevant standards can be adopted.
出处
《航天器环境工程》
2015年第5期532-536,共5页
Spacecraft Environment Engineering
基金
中国工程物理研究院总体工程研究所创新发展基金项目(编号:12cxj17)
关键词
模拟公路运输
随机振动试验
试验谱
simulated road transportation
random vibration test
test spectrum
