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Numerical verification of the limit load solutions for single edge notch specimen in tension

Graba M.

Archives of Civil and Mechanical Engineering

2013

Vol. 13, no. 1

45--56

In the paper, the verification of the limit load solutions proposed by EPRI procedures for single edge notched plate under tension (SEN(T)) is presented. For the concept of limit load of the component containing a crack, the force (or torque or pressure) which causes a full plasticity of the uncracked ligament of the structural component must be understood. It should be noted that the value of the limit load is determined under the assumption of elastic–perfectly plastic material. Numerical calculations presented in the paper (FEM) and analysis of the obtained FEM results were used to recalculate existing limit load formulas proposed by EPRI procedures for plane strain and plane stress states. On the basis of numerical calculations and verifications of the present solutions (EPRI solutions), in the paper new analytical formulas for better estimating the limit load value for SEN(T) specimen are presented. The measurable effect of the paper is a catalog of the numerical solutions and their approximation, which may be useful in engineering analysis.