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常幅疲劳试验结果一般用 S-N 曲线表示.绘制 S-N曲线的方法,大体可以分为依据数理统计结果进行和不经数学处理就进行这两类。方法有种种,其结果同异程度如何?哪种方法理论根据充分,所得结果准确?适用范围和优缺点又如何?这些都是工程技术人员十分关注的问题。为此,本文综合比较其中几种方法。一用回归方程绘制 S-N 曲线冶金部建筑研究总院等单位采用苏联中央工业建筑科学研究所“钢结构的实验研究”一书中的统计方程式分析疲劳试验结果.该方程可以写作:
Frequent fatigue test results are generally expressed as S-N curves. The method of plotting S-N curves can be broadly divided into those based on mathematical statistics and those performed without mathematics. There are various ways, the same degree of the same result? What method is based on the full, accurate results? Scope and advantages and disadvantages? These are engineers and technicians are very concerned about the problem. To this end, this article comprehensive comparison of several methods. A regression equation to draw S-N curve Metallurgy Department of Building Research Institute and other units using the Soviet Central Institute of Industrial Building “experimental study of steel ” a statistical equation analysis of fatigue test results.The equation can be written as: