coefficient of derailment meaning in English

脱轨系数

The safety of the running train is an important subject in railway vehicle system dynamics . the condition of derailment and indices of vehicle are important parameters that are defined for safety evaluation of the running train . according to the running condition of vehicle , the paper discusses derailment safety of vehicle in four respects : the coefficient of derailment for a single wheel , the coefficient of derailment for wheel - set , the derailment condition caused by wheel load reduction , relation between the coefficient of derailment and the rate of wheel load reduction . factors affecting the indices are systematically investigated . suitable conditions of derailment of vehicle are given . the results show that h / p1 can be used to evaluate the derailment safety , inwhich h is a force acting on wheel - set in the direction of lateral and p1 is a force acting on the derailment wheel in the direction of vertical
车辆脱轨条件和评定指标是衡量车辆安全运行的重要指标.根据车辆运行状态，从单轮脱轨条件和评定指标、轮对脱轨条件和评定指标、由轮重减载引起脱轨的条件、脱轨系数与轮压减少率的关系等4个方面对车辆的脱轨安全度进行了探讨，分析了影响车辆脱轨的因素，并指出车辆脱轨评定条件的适用情况.结果表明，采用作用于轮对的侧向力h与作用于脱轨侧车轮的垂直力p1之比检算车辆的脱轨安全度较为合理