STABILIZATION OF NOTCHED ELEMENTS' FRACTURE BY USING A CONTROL ALGORITHM

Crack propagation is a significant mechanism for quasi-brittle materials under applied loading. It can occur very suddenly and causes numerical instabilities deficiencies in some problems. This behavior manifest itself as non-convergence solutions i.e. the inability to obtain entire load-displacement curve or jumps load displacement curve. In this study, control technique implemented whole load–displacement when crack severe such snap-back behavior. The performance of was demonstrated by simulating uniaxial tension test pre-notched plate, three-point bending notched beam mixed-mode plate. study shows that algorithm able produce stable solution path these kinds method be easily available commercial finite element codes without need any user defined subroutines.