Influence of temperature and strain rate on the longitudinal compressive crashworthiness of 3D braided composite tubes and finite element analysis

Abstract

This article reports the longitudinal compressive crashworthiness of three-dimensional four-step circular braided carbon/epoxy composite tubes at temperatures of 23, −50, and −100℃ under strain rate ranging from 340 to 760/s both experimentally and finite element analysis. The experimental results showed that the compression strength, stiffness, and specific energy absorption increased with the decrease in temperature and with the increase in strain rate. It also showed that, the compressive damage morphologies were sensitive to the change in temperature and strain rate. A coupled thermal-mechanical numerical analysis was conducted to find the thermo/mechanical coupling effect on the compressive crashworthiness of the three-dimensional composite tube. The temperature distributions in the braided preform and the resin during the impact compression were also calculated through finite element analysis. From the finite element analysis results, the inelastic heat generation was seen to be more in the preform than the matrix and its distribution and accumulation led to the damage progress along the loading direction.

Multiple transverse impact damage behaviors of 3-D-braided composite beams under room and high temperatures

“…Resin as isotropic material was assumed to obey the J2-isotropic hardening plastic theory (Poni_ znik et al, 2017;Wu et al, 2017;Zhou et al, 2017). The yield properties of the fiber tows were defined by using Hill's anisotropic plasticity model (Wan et al, 2015;Wu et al, 2017). Ductile criterion and shear criterion (Hooputra et al, 2004) were selected in the FEA modeling to simulate the failure and damage process of the 3-D-braided composite beam under transverse impact.…”

Elastic–plastic damage prediction in notched epoxy resin specimens under mixed mode I/II loading using two virtual linear elastic failure criteria

“…Therefore, curing agents have considerable effects on the mechanical properties of the polymeric materials (Jin et al., 2015; Li et al., 2013). Other parameters, such as temperature, additive concentration, strain rate, and environmental variables, have noticeable effects on the fracture behavior of epoxy resins (Kinloch and Williams, 1980; Park et al., 2000; Rodriguez et al., 2015; Wu et al., 2017). For example, low hardener contents, low temperatures, and high strain rate loading can lead to high yield strength of polymeric material (Kinloch and Williams, 1980).…”

“…A large amount of the research, dealing with mechanical damage of polymeric components, belongs to the brittle fracture of epoxy resins containing cracks and notches (Baohui et al., 2018; Berto et al., 2016; Kinloch and Williams, 1980; Razavi et al., 2019; Rodriguez et al., 2015; Wu et al., 2017; Wu and Ju, 2017). The polymethyl-methacrylate (PMMA) is a well-known and commercial polymer, whose fracture behavior in the presence of notches has been studied in many researches under different loading cases (Aliha et al., 2016; Ayatollahi and Saboori, 2015; Ayatollahi and Torabi, 2010; Berto et al., 2013, 2012; Fiedler et al., 2001; Gomez et al., 2000; Torabi et al., 2016; Torabi and Amininejad, 2015).…”

Crushing response of circular thin-walled tube with non-propagating crack subjected to dynamic oblique impact loading

“…Crushing response of energy absorbing tubes has been performed analytically (Enakoutsa, 2014;Hao et al, 2017), numerically (Isaac and Oluwole, 2015;Wu et al, 2017) and experimentally (Eyvazian et al, 2014;Mirzaei et al, 2012). During experimental investigations, a number of crushed tubes develop cracks at their distal end.…”