内压作用下斜接接管结构裂纹萌生预测分析

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1、内压作用下斜接接管结构裂纹萌生预测研究3.2.2三维模型的建立......................................................................253.2.3单元的选用..............................................................................263.2.4网格划分.................................................

2、.................................263.2.5载荷和边界条件......................................................................273.2.6求解和后处理..........................................................................283.3数据的获得和处理..................................

3、...........................................283.4应力分布状况的分析与讨论..............................................................283.4.1名义应力的选取......................................................................283.4.2开孔率对应力分布的影响...........................

4、............................293.4.3筒体与接管厚度比对应力分布的影响....................................303.4.4筒体径厚比对应力分布的影响...............................................333.5危险点的分析和讨论.........................................................................343.6本章小结.

5、............................................................................................37第4章裂纹萌生预测......................................................................................384.1概述.......................................................

6、.............................................384.2裂纹萌生预测.....................................................................................384.3结构参数对裂纹萌生预测结果的影响..............................................40第5章可靠性研究与讨论..............................

7、................................................425.1概述....................................................................................................425.2一种简单可行的可靠性计算方法......................................................435.3算例................

8、....................................................................................44结论与展望.......................................................................................................47结论.............................................