Based on studying for fatigue life of rail vehicle structure, combined Delphi and MATLAB together to develop a system which could be used for structural stress data analysis. It contains all main parts from the original stress data analysis to fatigue life study. And it focused on researching of distribution of measured dynamic stress mainly. A way in which can solve distribution function law of dynamic stress accurately is achieved, which have great significance for studying of rail vehicle structure fatigue life estimate.%在轨道车辆结构疲劳寿命研究的基础上,将面向对象编程软件Delphi与数据计算软件MTLAB相结合,研究开发出一套可应用于结构应力数据分析的数据处理系统,包含了从原始应力数据到最终疲劳寿命估计的各主要环节,重点研究了实测动应力的分布规律,实现了对动应力分布规律的精确求解,对结构疲劳寿命估计研究意义重大.
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