Effect of thickness on fracture criterion in general yielding fracture mechanics |
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| Authors: | D M Kulkarni Vikas Chaudhari Ravi Prakash A N Kumar |
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| Affiliation: | (1) Mechanical Engineering Group, Birla Institute of Technology and Science, Pilani, Goa Campus, Zuarinagar, Goa, 403726, India;(2) Mechanical Engineering Group, Birla Institute of Technology and Science, Pilani, Rajasthan, 333031, India;(3) University of Ottawa, Ottawa, ON, Canada;(4) Tecsis corporation, Ottawa, ON, Canada |
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| Abstract: | In this research work, the effect of thickness on fracture criterion is studied for extra deep drawn (EDD) steel sheets. Experimental
results are generated on fracture toughness of EDD steel sheets using compact tension specimens and a ‘maximum load’ as a
fracture criterion. Critical crack tip opening displacement (CTOD) is found with the help of three methods: plastic hinge
model (PHM), crack flank opening angle (CFOA) and finite element model (FEM). The fracture toughness is found to increase
with increase in thickness of specimens. The fracture behaviour exhibited characteristics of general yielding fracture mechanics. |
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| Keywords: | EDD steel sheets CTOD CFOA FEM GYFM |
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