Bearing Failure Analysis of Carbon Fiber Reinforced Composite to Metal Bolted Joint at Elevated Temperature

Abstract

In this study, the bearing strength of carbon fiber reinforced composite to metal bolted joint was investigated experimentally and numerically. The ply sequence used in test specimen was [02/±45/02/±45/90/0]s. Seven specimens were manufactured and tested on Instron 8802 hydraulic testing machine for tensile properties. A 3D finite element model was developed in Abaqus/standard using C3D8R elements. Hashin and Tan failure and degradation rules were applied in VUSDFLD subroutine file to predict failure initiation and progression. The comparison of failure modes and bearing strength at room temperature and at 250°C is presented. Results obtained from simulation and tesing are in good agreement. The results shows that at room temperature, the bearing strength of this joint is around 60% more than that at 250°C.