摘要
疲劳方程一直是人们研究材料疲劳特性的重要手段。在总结国内外对水泥混凝土疲劳方程研究的成果上,对疲劳方程的形式作了改进,沿袭了双对数形式,在疲劳方程中引入水泥混凝土材料的最小应力水平,采用了三参数疲劳方程形式,使相关系数的绝对值达到最大,并对一组试验数据进行了拟合,与以往的疲劳方程相比,取得了良好的拟合效果。
Fatigue equation has always been a basic means to study the fatigue properties of materials. This article introduced some improvement in the fatigue equation of cement concrete after summarizing the achievements in the past. Based on the format of double logarithm, it introduced a parameter of minimum stress level to the fatigue equation of cement concrete, and adopted three parameters in the fatigue equation of cement concrete, so that the absolute value of correlation coefficient reached the highest. After experimenting on a series of results from trials, we have gained better effect using this method in comparison with the previous fatigue equation.
出处
《淮海工学院学报（自然科学版）》
CAS
2005年第2期67-70,共4页
Journal of Huaihai Institute of Technology:Natural Sciences Edition
关键词
水泥混凝土
疲劳方程
相关系数
数据拟合
优化
cement concrete
fatigue equation
correlation coefficient
data fitting
optimizing
