The damage strain field analysis of triangular symmetrical composite eutectic

Abstract

Purpose According to the microstructural characteristics of composite ceramic, the strain field distribution regularity of triangular symmetrical composite eutectic is obtained from the stress field distribution regularity of three-phase element in composite ceramic. In allusion to the damage of composite eutectic, it is introduced as a variable in this paper with the aim to determine the strain field distribution regularity of triangular symmetrical composite eutectic with damage behavior. Design/methodology/approach On the basis of the relationship between strain field and fiber inclusions volume fraction, the strain field of composite eutectic is analyzed. Findings The strain field of composite ceramic is distinctly dependent on the fiber inclusions volume fraction, fiber diameter and damage behavior of composite eutectic by quantitative analysis. The strain in matrix parallel to eutectic is the maximum linear strain and the main factor for the damage and fracture of eutectics. Originality/value The foundation of the strength research of composite eutectic is laid.