| 含表面裂纹压力容器失效概率计算的Lagrange方法 |
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| 引用本文： | 何柏林,于影霞,霍立兴,张玉凤. 含表面裂纹压力容器失效概率计算的Lagrange方法[J]. 化工机械, 2004, 31(2): 87-89 |
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| 作者姓名： | 何柏林 于影霞 霍立兴 张玉凤 |
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| 作者单位： | 华东交通大学;天津大学 |
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| 基金项目： | 国家自然科学基金资项目 (No .5 96 75 0 4 6 ) |
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| 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、功能函数复杂的情况更能显示其优越性
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| 关 键 词： | 焊接压力容器 表面裂纹 失效概率 Lagrange方法 |
| 文章编号： | 0254-6094(2004)02-0087-04 |
Lagrange Method for the Calculation of the Failure Probability of the Pressure Vessels Containing Surface Cracks |
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| HE Bolin ,YU Yingxia ,HUO Lixing ,ZHANG Yufeng. Lagrange Method for the Calculation of the Failure Probability of the Pressure Vessels Containing Surface Cracks[J]. Chemical Engineering & Machinery, 2004, 31(2): 87-89 |
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| Authors: | HE Bolin YU Yingxia HUO Lixing ZHANG Yufeng |
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| Affiliation: | HE Bolin 1,YU Yingxia 1,HUO Lixing 2,ZHANG Yufeng 2 |
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| Abstract: | 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. |
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| Keywords: | Welded Pressure Vessel Surface Crack Failure Probability Lagrange Method |
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