| 炮管自紧加压时的弹塑性断裂力学分析 |
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| 引用本文： | 王志群,查子初.炮管自紧加压时的弹塑性断裂力学分析[J].兵工学报,1990,11(2):23-28. |
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| 作者姓名： | 王志群 查子初 |
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| 作者单位： | 华东工学院
(王志群)，华东工学院(查子初) |
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| 摘 要： | 本文根据塑性力学增量理论,用非线性有限元法,计算了炮管弹塑性断裂力学参量J积分,通过实验测定的炮管用钢的J_R阻力曲线,按照弹塑性断裂力学J积分准则,分析了炮管在自紧加压时裂纹的启裂和失稳扩展规律,确定了炮管在自紧时初始裂纹尺寸和自紧度的关系。本文的研究对石油化工用高压圆筒容器和管道自增强时的安全分析也是适用的。
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| 关 键 词： | 炮管 自紧 弹塑性 断裂力学 火炮 |
AN ELASTIC-PLASTIC FRACTURE MECHANICS ANALYSIS OF GUN BARREL DURING AUTOFRETTAGE |
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| Wang Zhiqun Zha Zichu.AN ELASTIC-PLASTIC FRACTURE MECHANICS ANALYSIS OF GUN BARREL DURING AUTOFRETTAGE[J].Acta Armamentarii,1990,11(2):23-28. |
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| Authors: | Wang Zhiqun Zha Zichu |
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| Affiliation: | East China Institute of Technology |
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| Abstract: | The elastic-plastic fracture parameter J integrals for the gun barrel are calculated by use of nonlinear finite element method based on increamental theory. J_R resistance curve for the steel used is determined experimentally. Based on the elastic-plastic fracture J integral criterion, initiation and unstable growth of the cracking of gun barrel during the autofrettage is studied, The relationship between the initial crack size and the percent autofrettage of the gun barrel is obtained. |
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| Keywords: | autofretted gun elastic-plasti cfracture mechanics |
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