Stress Field near a crack tip with different crack fibre orientations of an orthotropic lamina

I was going through these papers:

1.P.K. Sarkar and S.K. Maiti, 'Prediction of mode-1 fracture toughness of unidirectional fibre composites with arbitrary crack fibre orientation from its lowest or matrix fracture toughness'. int. J. Fracture, vol. 40. pp. R91-R96, (1989).

2.S.K. Maiti and P.K. Sarkar, 'A method of calculation of total strain energy release rate and its layer-wise distribution for an arbitrary through the thickness crack extension in a composite laminate', Engg. Fracture Mechanics, vol. 36, pp. 639-646,(1990).

This is a fantastic expression for Stress Field near a crack tip with different crack fibre orientations which agrees well with the experimental results of tensile test of Gr- Ep laminates. It implies FRACTURE MECHANICS APPROACH OF UNIDIRECTIONAL LAMINATE using gc sih, paris and irwin formula.

Are there any papers , works which have dealt with analytical evaluation of SERR of a unidirectional/multidirectional lamina/ laminates?

What are the finite element formulations for this probelem?

Any formulations in ansys and the tutorials/guide etc available?

 Anybody interested in this field can contact me......

saurabh.mech.ism@gmail.com

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