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FEM formulation for mass diffusion through UMATHT subroutine

Abstract

This report summarized the development of a Finite Element framework for the description of bulk mass diffusion of a solute (hydrogen) in metallic materials (iron/steels). The implemented governing diffusion law accounts not only for the
solute concentration gradients but also for the mechanical state (stress and strain)on the distribution of the solute. The different forms of the Finite Element formultions are described as well as the implementa􀆟on in the Abaqus commercial code is through the use of a user defined UMATHT subroutrine. A final chapter is also dedicated to the conversion of the units for hydrogen concentration.
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Category

Research report

Language

English

Author(s)

Affiliation

  • SINTEF Industry / Materials and Nanotechnology

Year

2014

Publisher

SINTEF Industri

Issue

2014:26585

ISBN

9788214058338

View this publication at Norwegian Research Information Repository