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Finite element analysis of the cohesive zone across a strength mismatched bimetallic interface

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Title Finite element analysis of the cohesive zone across a strength mismatched bimetallic interface
 
Creator UKADGAONKER, VG
BHAT, S
 
Subject bimaterial interface
alloy steel
bimetallic
cohesive zone
j integral
maraging steel
perpendicular
plasticity
strength mismatch
 
Description When a Mode I crack in soft steel body grows and reaches near the perpendicular interface of ultra strong steel body, its cohesive zone penetrates into the interface body which influences the crack tip parameter. The paper presents finite element analysis of the cohesive zone across the interface of such elastically matched but strength mismatched bodies in linear elastic regime. Parent alloy steel (ASTM 4340) body and interface maraging steel (MDN 250) body are considered for analysis. The cohesive zone is modeled in accordance with the Dugdale criterion. J integral is evaluated over the path around the interface to examine the effect of cohesive stresses on the crack tip. The results are compared vis-A-vis those obtained from the theoretical model. The two are in very good agreement with each other.
 
Publisher TRANS TECH PUBLICATIONS LTD
 
Date 2011-10-24T06:56:48Z
2011-12-15T09:11:31Z
2011-10-24T06:56:48Z
2011-12-15T09:11:31Z
2007
 
Type Proceedings Paper
 
Identifier Advances in Fracture and Damage Mechanics VI,348-349,85-88
1013-9826
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15350
http://hdl.handle.net/100/2116
 
Source 6th International Conference on Fracture and Damage Mechanics,Madeira, PORTUGAL,JUL 17-19, 2007
 
Language English