Transferability of the Gurson Damage Model Parameters with Charpy and Tensile Tests with Different Constrain Level

Abstract:

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Little work has been published concerning the transferability of Gurson’s ductile damage model parameters in specimens tested at different strain rates and in the rolling direction of a Grade A ship plate steel. In order to investigate the transferability of the damage model parameters of Gurson’s model, tensile specimens with different constraint level and impact Charpy specimens were simulated to investigate the effect of the strain rate on the damage model parameters of Gurson model. The simulations were performed with the finite element program ABAQUS Explicit [1]. ABAQUS Explicit is ideally suited for the solution of complex nonlinear dynamic and quasi–static problems [2], especially those involving impact and other highly discontinuous events. ABAQUS Explicit supports not only stress–displacement analyses but also fully coupled transient dynamic temperature, displacement, acoustic and coupled acoustic–structural analyses. This makes the program very suitable for modelling fracture initiation and propagation. In ABAQUS Explicit, the element deletion technique is provided, so the damaged or dead elements are removed from the analysis once the failure criterion is locally reached. This simulates crack growth through the microstructure. It was found that the variation of the strain rate affects slightly the value of the damage model parameters of Gurson model.

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Periodical:

Edited by:

Alexander Balankin, José Martínez Trinidad and Orlando Susarrey Huerta

Pages:

19-31

DOI:

10.4028/www.scientific.net/AMR.65.19

Citation:

R. Cuamatzi-Melendez and J.R. Yates, "Transferability of the Gurson Damage Model Parameters with Charpy and Tensile Tests with Different Constrain Level", Advanced Materials Research, Vol. 65, pp. 19-31, 2009

Online since:

March 2009

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$35.00

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