Study of Fracture Parameter for Curved Cracked Bimodular Flexural Specimen Using COMSOL Multiphysics® Software

A. Bhushan [1], S.K. Panda [1],
[1]Indian Institute of Technology (BHU) Varanasi, Uttar Pradesh, India
Published in 2016

The formulation of bimodular stress field is based on stress dependent elasticity and the simulations have been carried out using commercial finite element software COMSOL Multiphysics® software. The complexity of the problem is enhanced due to adding bimodular stress field in the evaluation of complex J-integral ( ˆ F J ) for curve cracked geometry subjected to flexural loading. The complex J-integral ˆ FJ is found to be almost path independent and its degree of path independency is better than Rice’s J-integral (1968). The severity of bimodular 2D curved crack progression behavior has been delineated with asymmetry of stress-distribution and distortion of neutral axis.