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The characteristics of selected triaxiality measures of the stresses for a C(T) specimen dominated by the plane strain state

Graba M.

International Journal of Applied Mechanics and Engineering

2020

Vol. 25, no. 1

52--74

The paper presents a comprehensive analysis of the stress field and selected triaxiality parameters near the crack tip for C(T) specimen dominated by the plane strain state using the finite element method. It includes some theoretical information about elastic-plastic fracture mechanics, the basics of the FEM modeling and presentation of the numerical results. The FEM analysis includes calculations with large strain assumptions. The influence of the external load and crack length is discussed. Additional elements of the paper are a qualitative assessment of the size of plastic zones and the crack tip opening displacement.