摘要
铆钉连接广泛应用于航空航天和车辆领域。在CFRP层压板的连接过程中,铆接过程中形成的干涉量是保证连接性能的关键因素。为了研究铆杆膨胀对层合板应力和变形的影响,借助有限元方法分析铆接过程中孔壁的应力和变形值。仿真结果表明,钉杆过度膨胀导致层合板孔壁附近产生损伤并且产生翘曲变形。为了减少应力和变形,设计了一种嵌入在层压板中的金属件,并进行仿真结果对比。仿真结果表明,嵌入有效地减少了破坏和破坏,最大应力降低了64%。
The rivet-joints have been widely applied in aerospace and vehicle fields.During the joining process of the CFRP laminates,interference in riveting was the key factor to ensure the connection performance.In order to research the impact of expansion of rivet rod on stress and deformation of laminates,the value of stress and deformation of the wall of hole under riveting pressure was simulated.The results of simulation showed that excessive nail rod expansion led to the damage and failure of CFRP in the hole-edge.In order to reduce the stress and deformation,we designed a kind of metal embedded parts imbedded in the laminates.Simulation results showed that embedment reduced the failure and damage efficiently;the maximum stress reduced 64%.
作者
王一奇
丛志伟
肖光
杜俊锋
高航
徐福泉
WANG Yiqi;CONG Zhiwei;XIAO Guang;DU Junfeng;GAO Hang;XU Fuquan(Key Lab.for Precision and Non-traditional Machining Technology of Ministry of Education,School of Mechanical Engineering,Dalian University of Technology,Dalian 116024;AVIC Harbin Airc raft Industry Group Co.,Ltd.Harbin 150066)
出处
《纤维复合材料》
CAS
2021年第2期9-14,共6页
Fiber Composites
基金
国家自然科学基金资助项目(51605076)
中央高校基本科研业务费(DUT21LAB108)。
关键词
预埋件
复材铆接
损伤扩展
损伤抑制
embedded parts
CFRP riveted
damage evolution
damage removal.
