A one-dimensional phase transition constitutive model

Wang, Wenqiang; Tang, Zhiping
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p347
Academic Journal
Defects always exist in real materials that cause stress concentration. When phase transition takes place, new phase nuclei form first at the positions of defects and then grow via phase boundary propagation. There is a certain relationship between the propagation speed of phase boundary and the driving force, i.e. the Gibbs free energy difference between two phases. From this point, the phase transition process in real material is simulated with a rod containing defects. A rate-dependent phase transition constitutive relation is obtained using a method similar to that in the continuum thermo-elastic theory.


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