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C/C复合材料螺栓紧固特性
孙鹏军1,2, 雷勇军1, 吴宏伟2, 安军2, 李新涛3
1.国防科学技术大学航天科学与工程学院, 长沙 410073;2.空间物理重点实验室, 北京 100076;3.航天材料及工艺研究所, 北京 100076
摘要:
为了获得C/C螺栓紧固特性,采用紧固力矩试验方法开展了不同结构C/C螺栓紧固特性研究,研究内容包括不同垫片材料、单螺母和双螺母、涂胶和不涂胶等组合情况下C/C螺栓K值的变化趋势,并研究了C/C螺栓的极限抗扭能力。结果表明:碳基螺栓的扭矩系数值K与金属螺栓差异很大,不同材料结构也有差异,涂胶对增加夹紧力有明显的提高作用。
关键词:  螺纹扭矩  夹紧力  扭矩系数  紧固力矩
DOI:10.12044/j.issn.1007-2330.2017.01.012
分类号:TB33
基金项目:
Tightening Characteristic of C/C Composite Material Bolt
SUN Pengjun1,2, LEI Yongjun1, WU Hongwei2, AN Jun2, LI Xintao3
1.College of Aerospace and Material Engineering, National University of Defense and Technology, Changsha 410073;2.Science and Technology on Space Physics Laboratory, Beijing 100076;3.Aerospace Research Institute of Materials & Processing Technology, Beijing 100076
Abstract:
In order to obtain the tightening characteristics of C/C composite material bolt, the tightening torque characteristics of C/C composite material bolt with different structures were studied in this paper. The research can include the variation trend of the torque coefficient K of the bolts in different combinations of gasket material, single nuts and double nuts, scribbling with adhesives and non-scribbling with adhesives. The ultimate torsional resistance of C/C composite material bolt was studied. The results show that the torque coefficient K of the bolts is different from that of the metal bolts. The scribbling with adhesives can obviously improve the clamping force.
Key words:  Thread touque  Clamp force  Touque coefficient  Tightening touque