C/C编织复合材料双剪连接结构的挤压强度  

Bearing Strength of Carbon/Carbon Braided Composites Double Shear Joint

作　　者：唐玉玲 陈浩[1] 周振功[2] 张琰[1] 郭颖[2,3] TANGYuling;CHEN Hao;ZHOU Zhengong;ZHANG Yan;GUO Ying(Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry&Food Machinery and Equipment,Tianjin University of Science&Technology,Tianjin 300222;Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150001;School of Architecture and Civil Engineering,Harbin University of Science and Technology,Harbin 150006)

机构地区：[1]天津科技大学天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津300222 [2]哈尔滨工业大学复合材料与结构研究所,哈尔滨150001 [3]哈尔滨理工大学建筑工程学院,哈尔滨150006

出　　处：《机械工程学报》2020年第18期51-60,共10页Journal of Mechanical Engineering

基　　金：国家自然科学基金(11272105);天津市轻工与食品工程机械装备集成设计与在线监控重点实验室开放基金(2017 LIMFE02,2019 LIMFE04);黑龙江省教育厅科学技术(面上)(12541153)资助项目。

摘　　要：对碳/碳(C/C)编织复合材料双剪螺栓连接结构进行试验与数值研究。在拉伸载荷下对C/C编织复合材料螺栓连接结构的挤压接强度进行测试,分析堆叠顺序、开孔直径和预紧力对失效模式和挤压强度的影响,得到C/C编织复合材料双剪螺栓连接结构的失效模式,给出结构的失效机制。采用ABAQUS建立连接结构的非线性接触模型,利用垫片升温法实现螺栓预紧力,采用VUMAT子程序建立基于应变的Hashin破坏模型,该模型可效预报C/C编织复合材料双剪螺栓连接结构的渐进损伤、失效模式及挤压强度。利用该分析模型,给出C/C编织复合材料双剪螺栓连接结构的铺层方式和几何尺寸设计参考值,并绘制了该类材料双剪螺栓连接结构的破坏包线图。A comprehensive experimental and numerical evaluation of carbon/carbon(C/C)composites double-shear bolted joint is presented.The effects of the stacked sequence,bolt hole diameter and bolt-torque in joints are examined.Failure loads and failure modes of C/C composites double-shear configurations subjected to tensile loading are obtained and compared.Failure mechanism is analyzed and discussed.A non-linear contact model is developed using ABAQUS.The bolt-torque is realized by heating gasket.A strain-based Hashin failure model is established using VUMAT subroutine.The model effectively predict the progressive damage,failure mode and bearing strength of the C/C braided composite double-shear bolt joints.Based on the analysis model,the stacked sequence and geometric dimension design reference value of C/C braided composite double-shear bolt joints are given,as well as the failure envelope is given.

关 键 词：C/C编织复合材料 螺栓连接 强度 破坏 有限元分析 

分 类 号：TB332[一般工业技术—材料科学与工程]