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Journal of Applied Mechanics and Technical Physics

2015 year, number 4

Modified Theory of Local Strain Energy Density for Sharp V-Notches

Yu. N. Ovcharenko
Tula State University, Tula, 300600 Russia
Keywords: V-образный вырез, плотность энергии деформации, схемы нагружения первого и второго типов, квазихрупкое разрушение, начальное направление развития трещины, локальный критерий разрушения, V-notch, strain energy density, loading schemes of the first and second types, quasi-brittle fracture, initial direction of crack propagation, local fracture criterion

Abstract

A new approach is proposed to estimate the fracture of bodies with V-shaped notches under loading of two types. Two examples of quasibrittle fracture are considered: with an initial straight crack and with a sharp V-notch. Experimental data are obtained on the fracture of V-notched specimens under bending.