摘要
以PFM理论为基础 ,采用Lagrange方法对含表面缺陷焊接压力容器的失效概率进行了计算。结果表明 ,用Lagrange方法克服了迭代计算方法中有时收敛速度慢的缺点 ,特别是对于随机变量多。
The failure probability of the pressure vessels containing surface cracks was calculated by using Lagrange method based on PFM theory. The result shows that Lagrange method overcame the defect of slow covergence speed of the iterative method. The advantages of Lagrange method were particularly significant to many random variable quantities and complex functions.
出处
《化工机械》
CAS
2004年第2期87-89,共3页
Chemical Engineering & Machinery
基金
国家自然科学基金资项目 (No .5 96 75 0 4 6 )
