摘要
对车辆系统变速行驶所引起的非平稳随机振动进行了研究。建立了非平稳随机响应瞬时加速度功率谱与瞬时位移功率谱之间的关系；建立了二维时间频率功率谱与二维空间频率功率谱之间的关系；建立了时间频率与空间频率之间的关系；最后给出如何求解车辆上任一固定点非平稳随机响应的瞬时加速度功率谱。
Nonstationary random vibration of vehicle systems with uniform variable speed is discussed in this paper. The relation between instantaneous acceleration power spectrum and instantaneous displacement power spectrum is presented. The relations between two dimension time frequency power spectrum and two dimension space frequency power spectrum, time frequency and space frequency are presented. Finally, the method of solving instantaneous acceleration power spectrum of nonstationary random response of arbitrarily point on vehicle is presented.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
1997年第3期119-123,共5页
China Journal of Highway and Transport
关键词
车辆系统
非平稳随机振动
瞬时功率谱
Vehicle system, Nonstationary random vibration, Instantaneous power spectrum
