Open AccessAnalysis on failure mechanism of CFRP double-tap interference-fit joint
Author(s) -
Peng Zou,
Hao Chen,
Xue Feng Bi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012091
Subject(s) - finite element method , structural engineering , joint (building) , mechanism (biology) , fixture , interference (communication) , interference fit , materials science , tension (geology) , bending , ultimate tensile strength , composite material , computer science , engineering , mechanical engineering , epistemology , computer network , philosophy , channel (broadcasting)
Composite interference-fit joints have attracted much attention because they can effectively reduce the stress concentration around the holes during loading. In this paper, the load-bearing mechanism and strength of a typical double-lap structure under static load are studied through experiment and finite element method. In order to eliminate the influence of bending moment and other factors, a special fixture was designed to study the damage failure mechanism of CFRP interference fit joint under pure tension. The finite element model of CFRP interference fit double lap structure considering both intralaminar and interlaminar damages was established with ABAQUS user subroutine and cohesive element. The damage propagation mechanism during loading process is revealed and the ultimate bearing strength is predicted by comparing the results of experiment and finite element model.