Affiliation:
1. School of Civil Engineering, Harbin Institute of Technology, No. 77 Huanghe Road, Nangang District, Harbin 150090, China
2. CAPOL International Design Group, Shenzhen 518038, China
Abstract
3D braided composite joints are the important components in CFRP truss, which have significant influence on the reliability and lightweight of structures. To investigate the mechanical performance of 3D braided composite joints, a numerical method based on the microscopic mechanics is put forward, the modeling technologies, including the material constants selection, element type, grid size, and the boundary conditions, are discussed in detail. Secondly, a method for determination of ultimate bearing capacity is established, which can consider the strength failure. Finally, the effect of load parameters, geometric parameters, and process parameters on the ultimate bearing capacity of joints is analyzed by the global sensitivity analysis method. The results show that the main pipe diameter thickness ratioγ, the main pipe diameterD, and the braided angleαare sensitive to the ultimate bearing capacityN.
Funder
National Natural Science Foundation of China
Subject
General Environmental Science,General Biochemistry, Genetics and Molecular Biology,General Medicine
Cited by
4 articles.
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