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在恶劣道路激励下，较大的往复动应力促使了重型汽车车架疲劳现象的产生．本文通过对某重型汽车车架动态应变响应信号的数理统计分析，根据结构关键测点动应力大于３值的概率，提出了一种结构动强度分析的简单方法．
Under the adverse road excitation, a large reciprocating dynamic prompting heavy truck frame fatigue phenomenon. Based on the mathematical statistics analysis of the dynamic response signal of a heavy truck frame, a simple method for dynamic strength analysis of the structure is proposed according to the probability of dynamic stress greater than 3 at the key measurement point of the structure.