摘要
本文以有限元法为基础，导出了结构荷载效应特征函数算式，根据特征函数与数字特征的关系，求荷载效应的数字特征，最后，利用格拉马－沙尔勒叶级数拟合荷载效应的分布密度函数．
Based on the FEM, the characteristic function of structural load effects is derived in this paper. By using the derivative characteristic function,the characteristic number of the load effects can be obtained. At last,the probability density function of structural load effects can be fitted by using the Gram-Charlier series.
出处
《固体力学学报》
CAS
CSCD
北大核心
1995年第1期56-60,共5页
Chinese Journal of Solid Mechanics
关键词
随机有限元
结构力学
载荷效应
SFEM
load effect
characteristic function
probability density function
characteristic number
