Open AccessProgressive Failure Analysis and Experiment Research of the Composite Bolted Connection
Author(s) -
Xi Li,
Yazhi Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1820/1/012143
Subject(s) - structural engineering , connection (principal bundle) , composite number , finite element method , bolted joint , delamination (geology) , stiffness , composite laminates , ultimate tensile strength , materials science , stress (linguistics) , tension (geology) , stiffness matrix , ultimate failure , composite video , fracture (geology) , composite material , engineering , chip , paleontology , linguistics , philosophy , subduction , electrical engineering , biology , tectonics
Bolt connection is a common engineering structure. In order to analysis the composite bolted connection, based on continuous damage mechanics method, different failure criteria are established for fiber, matrix and delamination. To improve the efficiency of engineering estimation, this paper proposed the selective parabola algorithm to solve the fracture angle and uses the linear stiffness degradation method to establish the finite element model. Firstly, composite laminates with a hole in the tension stress are analyzed by using the above model, and by comparing the test results with the experimental results, the feasibility of the model is verified. Then, the progressive failure analysis is carried out to study the composite bolted connection. The comparison between the calculation results and the test results shows that the mechanical model proposed in this paper can predict the strength of composite bolted connection under tensile load accurately and also can present the damage evolution process exactly.