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一、前言目前最广泛采用的脱轨判断方法,是为爬轨轮上的轮轨接触力规定一个上限,这一极限随力的作用时间而变化。作为统一评价铁道车辆脱轨安全性运用条件和线路结构的指标,其可靠性是极为重要的。本文提出与时间相关的轮轨力脱轨指标的详细分析和试验评定,表明单独使用这类指标来预测脱轨是不适合的。用轮载测量脱轨是有其背景的,因为对一个完整的转向架而言,脱轨机理是复杂而高度非线性的,至今为止还不曾建立有效
I. INTRODUCTION Currently, the most widely used derailment determination method is to provide an upper limit for the wheel-rail contact force on the crawler track. This limit varies with the action time of the force. As a unified assessment of rail vehicle derailment safety conditions and line structure of the indicators, the reliability is extremely important. This paper presents a detailed analysis and test evaluation of the time-dependent derailment indicators of wheel-rail forces, indicating that it is not appropriate to use such indicators alone to predict derailment. Derailment with on-board measurements has its background, since the derailing mechanism is complex and highly non-linear for a complete bogie and has not been established to date