3D Modeling for Dynamic Response of Mixed Phase during Phase Transition

Abstract:

Shock-induced phase transition under intensive impact loading can strongly change the dynamic behavior of materials and wave propagation features. Dynamic constitutive modeling is one of the key problems in this area. We established a 3D dynamic incremental constitutive equation of phase transition with N transforming phases considering pressure, shear stress and temperature based on the Gibbs free energy. We also proposed an evolution equation for the product phase taking account both the over driving force and the growing space. The dynamic stress-strain response predicted by the model for TiNi specimen undergoing martensitic transition fitted the experimental result well, which demonstrates the present model can describe the dynamic deformation behavior of materials during phase transition process under impact loading.

• Periodical: Applied Mechanics and Materials (Volumes 446-447)
• Pages: 422-426
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.446-447.422
• Online since: November 2013
• Authors: Yang Bo Guo, Zhi Ping Tang
• Keywords: Constitutive Model, Dynamic Response, Mixed Phase, Shock-Induced Phase Transition

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