摘要
将改进的滤波算法和随机边界元法结合 ,提出了用于预测接触应力的逆随机边界元法。根据某些内点应变的随机分布 ,建立了量测值的边界元解析灵敏度矩阵和解析量测矩阵 ,从而使得预测边界上的随机接触载荷的分布和结构可靠度的分布成为可能。最后 ,算例显示了本方法的有效性。
An inverse stochastic boundary element method for prediction of contact stress is presented by combining improved filter algorithm with stochastic boundary element method. Analytical sensibility matrix of boundary element method and analytical observing matrix of observing equation are obtained from the stochastic distribution of some internal points. It makes it possible to determine the distribution of stochastic contact loads in boundary and the prediction of structural reliability. Finally, a numerical example shows the effectiveness of this method.
出处
《浙江工业大学学报》
CAS
2000年第3期210-215,共6页
Journal of Zhejiang University of Technology
基金
浙江省自然科学基金资助项目! (1 990 0 2 )
关键词
滤波算法
随机边界元法
结构可靠度
接触问题
filter algorithm
stochastic boundary element method
structural reliability
contact problems
