Finite Element Analysis of the Cohesive Zone across a Strength Mismatched Bimetallic Interface

Vijay G. Ukadgaonker; Sunil Bhat

doi:10.4028/www.scientific.net/KEM.348-349.85

Paper Titles

Fracture Analysis of Magnetoelectroelastic Composite Materials
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Interface Crack in Anisotropic Solids under Impact Loading
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A Probabilistic Extended Finite Element Approach: Application to the Prediction of Bone Crack Propagation
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Mechanical Behavior of High-Tension Bolted Joints with Varying Bolt Size and Plate Thickness
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Finite Element Analysis of the Cohesive Zone across a Strength Mismatched Bimetallic Interface
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A New Correction Procedure to Correct the Predicted Crack Extension Direction of a Mixed Mode Crack Path
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Shear Debonding of FRP from Concrete: The Influence of FRP Sheet Width on Load Carrying Capacity
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Probabilistic Analysis of Three-Dimensional Beams with Uncertain Damage
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High Temperature Low Cycle Fatigue of Superalloys Inconel 713LC and Inconel 792-5A
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 348-349Finite Element Analysis of the Cohesive Zone...

Finite Element Analysis of the Cohesive Zone across a Strength Mismatched Bimetallic Interface

Abstract:

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-à-vis those obtained from the theoretical model. The two are in very good agreement with each other.