Abstract

The basic principle and technique of a new and effective extended finite element method is introduced first in the paper. Compared with classical finite element method, the crack growth can be simulated by XFEM without making the crack surface associated to the mesh and without remeshing after crack growth. On the basis it is applied to analyze difficult problem of fracture and crack growth mechanism of composite pavement structural. By three-point bending test of composite structural beam, the whole process of initial crack and the crack growth of composite pavement structure is analyzed by numerical simulation. It can be divided into four key stages from cracking to crack reflection and each stage is presented by tensile stress and SATUSXFEM. The research results can provide important reference for composite structure design and proposed control countermeasure.

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