螺栓断裂分离可靠性设计与试验验证

李维轩; 罗畅; 张耀江; 陶亮; 舒振辉

doi:10.13433/j.cnki.1003-8728.2017.0316

螺栓断裂分离可靠性设计与试验验证

doi: 10.13433/j.cnki.1003-8728.2017.0316

1.
中国石油新疆油田分公司工程技术研究院, 新疆克拉玛依 834000;
2.
西北工业大学, 西安 710072

详细信息

作者简介:
李维轩(1965-),高级工程师,研究方向为石油钻完井工具,Lwxuam@petrochina.com

通讯作者:
陶亮(联系人),副教授,博士,tao_1970@nwpu.edu.cn

计量
- 文章访问数: 168
- HTML全文浏览量: 22
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2016-08-22
- 刊出日期: 2017-03-05

Reliability Design and Experimental Verification of Separation of Fracture Bolt

1.
Engineering Technology Research Institute of Petro-China Xinjiang Oilfield Company, Xinjiang Karamay 834000, China;
2.
Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 针对使用在SMA分离装置中的分离螺栓，在设计载荷下进行了结构脆性断裂分离的可靠度设计和试验验证。通过材料拉伸性能试验获取材料的强度性能分布，确定了材料的脆性特征。考虑应力集中系数的影响，应用一次二阶矩法对脆性断裂螺栓的结构进行了可靠度设计，并通过Monte Carlo随机抽样和可靠性试验验证了断裂螺栓结构设计的可靠性。结果表明：脆性断裂材料的抗拉强度服从正态分布，表现出沿晶断裂的准脆性力学特征；结构可靠性设计中切口的应力集中系数和加工粗糙度对分离载荷影响偏大；可靠性试验验证了脆性断裂螺栓的可靠性设计方法。
- 分离螺栓 /
- 可靠性分析 /
- SMA分离装置 /
- 准脆性
Abstract: The reliability design and experimental verification for brittle fracture bolt which was used in shape memory alloy fracture mechanism under a certain load was conducted. The distribution of tensile strength and brittle characteristics was obtained via tension. The reliability design for brittle fracture bolt has been done using FOSM, and the stress-concentration-factor was taken into consideration. The reliability design was confirmed by using Monte Carlo method and function tests. An approximate normal-distribution curve has been found to suit the tensile strength of brittle steel. The material was characterized by using quasi-brittle property. Stress-concentration-factor and roughness on surface had a great impact on separation load in reliability design. The reliability experiment proved that the reliability design method of brittle fracture bolt was correct.
- separation bolt /
- reliability analysis /
- shape memory alloy fracture device /
- quasi-brittleness

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