I am new in Abaqus. I want to do crack analysis in abaqus for CT specimen and to develop J-R curve. I have mentioned yield stress, plastic strain, young's modulus and poisson ratio to define the material in CAE model. I have also provided displacement vs crack length data to define the debond criteria. When the model running no crack value is given in the .dat file and the J values are -ve. Also for load displacement curve up to yield point it is matched very well but after that the load values are high compared to the experimental values. Kindly help me to develop the J-R curve from Abaqus analysis.
Sumit Bhowmik