Simulations of crack extensions in arc-shaped tension specimens of uncharged and hydrogen-charged 21-6-9 austenitic stainless steels using cohesive zone modeling with varying cohesive parameters
Engineering Fracture Mechanics（2021）
Abstract
•Simulate crack extensions in A(T) specimens using cohesive zone modeling approach.•Calibrate fixed cohesive parameters to fit experimental load–displacement curves.•Calibrate varying cohesive parameters to fit experimental load-crack extension curves.•Computational results with varying cohesive parameters fit experimental data well.•Compare cohesive parameters for uncharged and hydrogen-charged A(T) specimens.
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Key words
Arc-shaped tension specimen,Fracture test,Cohesive zone modeling,Trapezoidal traction-separation law,Varying cohesive parameters,Hydrogen effect
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