Is there any straight-forward relation between strain energy density and energy release rate for mode-I fracture?

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Khaliq Hussain

Whittaker, B. N., Singh, R. N., & Sun, G. (1992). Rock fracture mechanics: principles, design, and applications (Vol. 570). Amsterdam: Elsevier.

A very useful book about fracture toughness.

Tousif Ahmed

Thanks Khaliq Hussain I'll check it out.

Abdolrasoul Ranjbaran

Please look at the following paper. A reliable fracture mechanics, IJRRS, 3(1) : 1-15. You may find good information regarding the new idea which removed the ambiguities and simplifies the fracture mechanics.

Thanks for sharing this article professor Abdolrasoul Ranjbaran