磨耗指数

根据高速动车组的特点，选择轮轨磨耗指数、临界速度和横向平稳性作为高速动车组车轮型面优化的3个目标函数，建立了CRH2动车组车轮型面多目标优化设计的数学模型。

According to the characteristic of high speed multiple units , choosing three functions of the critical speed , wheel / rail wear and lateral comfort as the objective functions of wheel profile multiobjective optimization model .

轮轨磨耗指数的分析

Analysis on the wear index between the rail and the wheel

分析轮对冲角、脱轨系数和磨耗指数等主要性能指标与耦合连接横向、回转刚度等参数的关系，给出相应的连接参数设计原则。

The relation between the major performance indexes as wheelset attack angle , derailment coefficient , wear index and different coefficients such as coupled linking lateral coefficient and rotary stiffness is analyzed . The design principle of corresponding linking parameters is suggested .

以牙磨耗度和牙指数推算牙齿年龄的多元回归方程式的研究

A trinal regression formula of estimation age with both the degree of tooth attrition and the tooth index