摘要
建立了250km/h高速综合检测车车体结构,包括车底BTM吊装座的有限元模型,利用轨道车辆随机振动及应力高效算法程序,采用德国高速低干扰谱作为激励载荷,进行整车包括BTM吊装座随机应力分析.随着速度的增加,车体最大值点的应力标准差也随之增加,最大值为0.5452 MPa,出现在1Hz处、7 Hz处也出现第二峰值,车下吊装座BTM的应力标准差也随之增大最大值7.419 1 MPa变化达35.9%.
A BTM of comprehensive inspection train is constructed, and an accurate railway vehicles random vibration analysis method is employed to conduct random stress analysis, taking German low interference spec- trum as load at five different speeds. With increasing speed, standard the maximum stress deviation of the car body increases, with the maximum value of 0. 5452 MPa at 1 Hz. A second peak is located at 7Hz, and the maximum stress of the standard deviation is increased to 7. 4191 MPa.
出处
《大连交通大学学报》
CAS
2014年第A01期17-21,共5页
Journal of Dalian Jiaotong University
基金
国家自然科学基金资助项目(11172056)
