| 断裂力学在推进剂贮箱安全评定中的应用 |
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| 引用本文： | 袁杰红,唐国金.断裂力学在推进剂贮箱安全评定中的应用[J].强度与环境,1999(1):30-36. |
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| 作者姓名： | 袁杰红 唐国金 |
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| 作者单位： | 国防科技大学航天技术系!湖南长沙，410073 |
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| 摘 要： | 介绍了断裂力学在火箭推进剂贮箱安全评定中的应用。首先对贮箱进行了应力分析。然后，通过对贮箱结构的合理简化，将线弹簧模型应用到其中未穿透裂纹应力强度因子的求解。最后，介绍了一种断裂韧性的测试方法。数值和试验结果表明，方法是简便可靠的。
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| 关 键 词： | 推进剂储箱 裂纹 应力强度因子 断裂强度 |
An Application of Fracture Mechanics to the Safety Evaluation of Rocket Propellent Tank |
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| Yuan Jiehong, Tan Guojin ,Zhou Jianping ,Song Xiancun.An Application of Fracture Mechanics to the Safety Evaluation of Rocket Propellent Tank[J].Structure & Environment Engineering,1999(1):30-36. |
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| Authors: | Yuan Jiehong Tan Guojin Zhou Jianping Song Xiancun |
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| Abstract: | An application of fracture mechanics to the safety evaluation of rocket propellent tank was presented. Firsily, stress analysis of the tank was carried out. Then, the structure of the tank was simplified reasonably, and the line-spring model was used to calculate the stress mtensity factors of part-through cracks. At last, a facture toughness test method was presented. Numerical and experimental results show that the method is simple, convenient and reliable. |
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| Keywords: | Propellent tank Crack Stress-intensity factor Fracture strength |
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