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为了探讨高寒地区恶劣条件下轮轨接触状态特性,确保列车运行安全,研究了运营速度400 km/h的高速列车在俄罗斯高寒地区轮轨接触的粘着特性,首先建立了相应的整车动力学模型及轮轨滚动接触模型,然后在此基础上,研究了高寒地区轮轨接触粘着系数的主要影响因素,求解出相关的峰值粘着曲线和粘着曲面,最后在保证轮轨良好粘着状态的前提下,充分利用粘着条件设计了列车制动减速度曲线,并验证了该曲线的正确性、合理性、有效性。
In order to investigate the characteristics of wheel-rail contact under harsh conditions in alpine region and ensure the safety of train operation, the adhesion characteristics of wheel / rail contact of high speed train operating at 400 km / h in the alpine region of Russia were studied. The corresponding vehicle dynamics model On the basis of this, the main influencing factors of the wheel-rail contact adhesion coefficient in the alpine region are studied, and the related peak adhesion curves and the adherent curved surfaces are solved. Under the premise of ensuring the good adhesion of the wheel and rail, The brake deceleration curve of the train was designed by fully utilizing the adhesion conditions, and the correctness, rationality and effectiveness of the curve were verified.