[1]谭志勇,费庆国,吴宏伟,等.复合材料与高温合金螺栓连接的热适配技术[J].东南大学学报(自然科学版),2017,47(2):337-342.[doi:10.3969/j.issn.1001-0505.2017.02.023]
 Tan Zhiyong,Fei Qingguo,Wu Hongwei,et al.Thermal adaptive technique for connecting composite material and high-temperature alloy bolt[J].Journal of Southeast University (Natural Science Edition),2017,47(2):337-342.[doi:10.3969/j.issn.1001-0505.2017.02.023]
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复合材料与高温合金螺栓连接的热适配技术()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第2期
页码:
337-342
栏目:
材料科学与工程
出版日期:
2017-03-20

文章信息/Info

Title:
Thermal adaptive technique for connecting composite material and high-temperature alloy bolt
作者:
谭志勇1费庆国2吴宏伟1张宏宇1姜东2 3
1北京临近空间飞行器系统工程研究所, 北京 100076; 2东南大学机械工程学院, 南京 211189; 3南京林业大学机械电子工程学院, 南京 210037
Author(s):
Tan Zhiyong1 Fei Qingguo2 Wu Hongwei1 Zhang Hongyu1 Jiang Dong23
1Beijing Institute of Nearspace Vehicle’s Systems Engineering, Beijing 100076, China
2School of Mechanical Engineering, Southeast University, Nanjing 211189, China
3College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
复合材料 热结构 高温合金螺栓 热适配连接 预紧力矩
Keywords:
composite material thermal structure high temperature alloy bolt thermal adaptive connector pre-tightening torque
分类号:
TB332;O341
DOI:
10.3969/j.issn.1001-0505.2017.02.023
摘要:
为了改善高温环境下螺栓连接力学性能,避免热膨胀不匹配所导致的预紧力松弛,研究了高温合金螺栓连接的热适配技术.首先,推导了热适配螺栓的外形参数,指出高温合金热适配螺栓与复合材料的接触面应满足旋转对称的指数轮廓.然后,考虑到螺栓拧紧力矩试验通常在常温下进行,通过比较常、高温条件下的强度性能,推导出高温条件下螺栓预紧力矩的合理取值.最后,开展了普通螺栓与高温合金热适配螺栓典型连接单元的静力试验和振动试验.试验结果表明,热适配连接单元在高温下未发生预紧力矩松弛,而普通螺栓预紧力矩则明显下降,从而验证了所提热适配技术的有效性.
Abstract:
To improve the mechanical performance of bolted connections at the high temperature and avoid the reduction of pre-tightening torque due to the mismatch of thermal expansion, the thermal adaptive technique for high temperature alloy bolt joints is investigated. First, the profile parameters of the thermal adaptive bolt is derived. The interface profile between the thermal adaptive bolt and the composite material is exponential form which satisfies rotational symmetry. Then, considering that the pre-tightening torque experiment is often carried out at the room temperature, the reasonable pre-tightening torque of the high-temperature alloy bolt is derived by comparing the mechanical performance at the room temperature and at the high temperature. Finally, the static and dynamic tests on two typical connection units for the normal bolted joint and the thermal adaptive bolted joint are carried out. The experimental results show that the pre-tightening torque of the thermal adaptive joint unit remains unchanged at the high temperature while that of the normal joint unit decreases obviously, and thus the effectiveness of the proposed thermal adaptive technique is verified.

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备注/Memo

备注/Memo:
收稿日期: 2016-07-11.
作者简介: 谭志勇(1965—), 男, 博士, 研究员, tanzhy_01@163.com.
基金项目: 国家自然科学基金资助项目(11572086, 11602112)、教育部新世纪优秀人才支持计划资助项目(NCET-11-0086).
引用本文: 谭志勇,费庆国,吴宏伟,等.复合材料与高温合金螺栓连接的热适配技术[J].东南大学学报(自然科学版),2017,47(2):337-342. DOI:10.3969/j.issn.1001-0505.2017.02.023.
更新日期/Last Update: 2017-03-20