在用理论方法解决工程中的具体问题时,应当尽可能简化。当然,简化是有原则的。在应用数理统计的方法解决车辆强度时,我们引用一般结构力学中允许一种简化计算方法的误差不超过5%的原则;对于载荷分析,笔者在文献[1]中选取许用应力时,已考虑载荷的允差为10%的这一原则。提及此点并非多余,否则在现有“样本” In the theoretical method to solve specific problems in the project, it should be as simple as possible. Of course, simplification is a principle. When using mathematical statistics to solve vehicle strength, we refer to the principle of allowing a simplified calculation method in general structural mechanics to not exceed 5% error. For load analysis, when author selects allowable stress in [1], Consider the principle that the tolerance of the load is 10%. It is not unnecessary to mention this point, otherwise in the existing “sample”