摘要
随机过程模型能较好描述截面抗力问题,但参数的增加会使问题的复杂程度进一步扩大,而阶梯过程描述结构荷载可较好解决上述问题.为更好对阶梯过程的模型进行可靠性分析,文章把荷载取值出现跳跃时间间隔假设为随机变量,利用积分方程给出了荷载最大值的分布函数Fη(t,x)和密度函数fη(t,x),进一步得到η的均值和标准差的近似求法.
The model of random process will describe resistance better, but the addition of parameter will lead to complex situation, the model of step process can solve the problem. In order to make the reliability analysis for the model,it is supposed the jumping time interval to be a random variable, the distribution function Fη（t,x） and density function fη（t,x） of the supremum is abtained by the integral eqution, then approximate calculation of the mean and the standard deviation of η is given.
出处
《泉州师范学院学报》
2008年第6期5-8,共4页
Journal of Quanzhou Normal University
基金
福建省自然科学基金资助项目(A2008J0024)
关键词
阶梯过程
可靠性分析
统计参数
近似计算
model of step process
reliability analysis
statistics parameter sapproximate calculation
