title: Mechanical performance and parameter sensitivity analysis of 3D braided composites joints.
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 ratio γ, the main pipe diameter D, and the braided angle α are sensitive to the ultimate bearing capacity N.
authors.affiliation: School of Civil Engineering, Harbin Institute of Technology, No. 77 Huanghe Road, Nangang District, Harbin 150090, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wu
authors.affiliation: School of Civil Engineering, Harbin Institute of Technology, No. 77 Huanghe Road, Nangang District, Harbin 150090, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Nan
authors.affiliation: CAPOL International Design Group, Shenzhen 518038, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
mesh_terms: D002244:Carbon / Q000737:chemistry*; D000077482:Carbon Fiber; D003198:Computer Simulation; D003252:Construction Materials; D055119:Elastic Modulus; D055595:Mechanical Phenomena; D008962:Models, Theoretical; D018583:Pliability; D011108:Polymers / Q000737:chemistry*
chemical_list: D000077482:Carbon Fiber; D011108:Polymers; D002244:Carbon