本文基于蠕滑力饱和达到库伦摩擦力的理论，推导考虑了冲角、轮轨蠕滑等因素的动态Nadal限度。以此限度作为车辆运行安全评判标准，研究我国铁路通用货车重车重心合理限制高度。SIMPACK仿真结果表明，在此限度下的重车重心高可达2400mm，比现行的重车重心限制高度增加400mm。本方法在一定程度上减小了误判率，可为我国铁路通用货车重车重心高的确定及试验方法提供一定的参考。%A creep force , w hen increasing until saturation , equals to the Coulomb′s friction force . Based on this theory , this paper deduced the dynamic Nadal limits , considering elements such as attack angle and rail/w heel creeping . With these limits being used as the evaluation criteria for vehicle operating safety , the reason‐able permitted height of gravity center of loaded wagons generally used in China was studied . From the simula‐tion results of SIMPACK ,the final gravity center height limit of loaded wagon can reach 2 400 mm under the dynamic Nadal limits , which is 400 mm more than the current gravity center height limit . This method re‐duced the misdiagnosis rate ,and can provide some guidance for the determination of as well as test methods for gravity center height limit of railway loaded wagons generally used in China .
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