Thermo-Mechanical Analysis with Phase Transformations


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Geijselaers, H.J.M. and Huetink, H. (2004) Thermo-Mechanical Analysis with Phase Transformations. In: NUMIFORM, International Conference on Numerical Methods in Industrial Forming Processes, 13-17 June, 2004, Columbus, Ohio.

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Abstract:Constitutive equations for simulations of thermo-mechanical processes, involving solid-solid phase transformations
are derived. The rate of phase transformation is assumed to depend on temperature as well as stress state. The constitutive
equations comprise latent heat of transformation, transformation dilatation and transformation induced plasticity. Consistent
moduli are derived for finite time steps. The constitutive equations are implemented in a finite element model, which has displacements
and heat flows as primary variables. The temperatures, phase fractions, stresses and equivalent strains are treated
as state variables and are evaluated in element integration points. The model is demonstrated on simulations of laser hardening
Item Type:Conference or Workshop Item
Copyright:American Institute of Physics
Faculty:
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/59480
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