关键词: 碳纤维复合材料, 缠绕圆管, 压缩失效, 能量吸收

Abstract: Mechanical tests and simulation methods were utilized to study the failure behavior and attributes of [±45]_3S wrapped composite round pipes under various compression circumstances. Quasi-static axial and radial compression failure tests were performed on the composite wound cylindrical pipes, followed by an investigation of the wound round pipe’s energy absorption characteristics. LS-DYNA was used to create a finite element model of the Hashin and Chang-Chang failure criterion for simulation, and the failure reaction and energy absorption damage process of the circular tube were investigated. The efficiency of the established simulation model was thoroughly validated using comparative tests and numerical analysis. The results demonstrate that the wound tube mostly absorbs crushing energy via matrix fracture and fiber buckling. The Chang-Chang failure criterion simulates deformation more accurately, which is consistent with test results in which the initial peak value, total energy absorption, and specific energy absorption of axial and radial compression are all less than 10%.

Key words: carbon fiber composite, wound round tube, compression failure, energy absorption