In order to study the influence of simulation models with different modeling methods on the calculation efficiency and results of shunting impact, longitudinal dynamics, three-dimensional refined and hybrid dynamics were established to simulate the shunting impact condition according to the parame-ters of C80 convertible and MT-2 buffer, and the response results of shunting impact under different speeds, empty heavy vehicle states and different marshing modes were analyzed. On this basis, the mod-eling convenience and computational efficiency of the model are discussed. The results indicate that: (1) With the increase of impact velocity, the maximum coupler force obtained by the three models changes in the same trend, but the difference between the results becomes larger and larger. For example, the sim-ulation difference can reach 15％ at 8km/h; At the same time, the maximum difference of analysis re-sults under empty condition is 8.9％, which is larger than the simulation results under heavy condition of 2.4％. (2) The time history of coupler force obtained by different grouping methods is similar, and the maximum difference is about 8％ in different coupler positions. (3) There are difficulties in the mod-eling convenience, but the database of model A is more convenient to call on the interface, and the calcu-lation time is much less than that of the other two models.
关键词
连挂建模/调车冲击/纵向动力学模型/精细化模型/混合动力学模型
Key words
linked modeling/shunting impact/longitudinal dynamics model/fine model/hybrid dynamic model
维普
万方数据