摘要
基于"刚度等效"原则,建立某自主研发的高速动车组车体刚结构有限元模型,车体一阶垂向弯曲和一阶扭转的振动频率的数值解与模态试验值的误差分别为2.75%和7.90%;在此基础上,以整备状态车体有限元模型重心与实际重心一致为质量分布原则,创建五种整备状态车体模态分析模型.模态分析结果表明:与实际重心最接近的模型5的计算结果与试验结果最为接近,误差分别为0.03%和6.85%;建议车体方案设计阶段采用模型2的建模方法估算整备状态车体模态.
Finite element model of a car body for independent developed high-speed EMU is set up based on stiffness equivalence principle. Errors of numerical and modal experimental results are 2.75% and 7.90% respectively,for first-order vertical bending frequency and torsional frequency. On this basis,five modal analysis models of equipped car body are established based on distributing mass principle in which gravity center of the model agrees with physical prototype. The frequencies from the fifth model are most closed to the experimental results,and the errors are 0.03% and 6.85%. The suggestion is that the second modeling method is feasible to simulate the equipped car body in design stage.
出处
《大连交通大学学报》
CAS
2016年第1期11-14,共4页
Journal of Dalian Jiaotong University
基金
中国铁路总公司科技研究开发计划资助项目(2014J004-N)
国家科技支撑计划资助项目(2013BAG21Q01)
