CRH2G高速列车车体振动性能分析

摘要

ANSYS finite element software was used to model and simulate calculation for CRH2G seven car body.Then, the modal parameters of 4 car body were obtained and compared with modal test results to verify the validity of the finite element model.According to the results of the modal simulation analysis, intrinsic parameters, such as car body vibration frequency and vibration model, not only can provide a reference for the optimization design of car body vibration performance improvement, but also verify that one of the most important order vertical bending vibration mode of CRH2G type car body is more than 10 Hz, which complies with the design standards.%对新型高寒抗风沙动车组CRH2G七车车体,利用ANSYS软件进行建模和仿真计算,获取车体前4阶整车模态参数,并与运行模态试验测试结果作对比,验证了有限元模型的正确性.根据模态仿真分析结果,得到车体振动频率和振型等固有参数,同时也验证了CRH2G型车体最重要的一阶垂向弯曲振型对应的固有频率大于10Hz,符合设计标准要求, 为车体振动性能改进及优化设计提供参考依据.