Progressive damage analysis and failure load of ceramic matrix composite hollow-shaft

Abstract

Composite damage is one of important reasons for the destruction of engineering structures; therefore the research target is a typical engineering component – hollow shaft. Firstly, based on the continuum damage mechanics, a stiffness degradation method is proposed to simulate the progressive damage process of ceramic matrix composite hollow-shaft. Afterwards, program development using solid finite element method in ANSYS, the simulative load–displacement curves and tensile failure load of the hollow-shaft are achieved. Finally, Qualitative and quantitative analysis by computer calculation and experimental results, successfully predict the structure failure modes and bearing capacity under axial load. This work proves that the correctness and feasibility of this progressive damage analysis method for ceramic matrix composite hollow-shaft, and further deepen the understanding of damage development.