A 2D finite element model of a C(T) specimen is developed by a zero‐thickness layer of cohesive elements, to simulate crack propagation. Starting from an initial model without H, the embrittlement effect is simulated by modifying the traction‐separation law (TSL) of cohesive elements, according to relationships taking into account H diffusion at the crack tip and εP. Parameters of TSL are calibrated in order to reproduce the experimental toughness data.
Numerical FE study of hydrogen embrittlement
VERGANI, LAURA MARIA;COLOMBO, CHIARA;GOBBI, GIORGIA
2014-01-01
Abstract
A 2D finite element model of a C(T) specimen is developed by a zero‐thickness layer of cohesive elements, to simulate crack propagation. Starting from an initial model without H, the embrittlement effect is simulated by modifying the traction‐separation law (TSL) of cohesive elements, according to relationships taking into account H diffusion at the crack tip and εP. Parameters of TSL are calibrated in order to reproduce the experimental toughness data.File in questo prodotto:
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Teddington idrogeno.pdf
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