3D coupled thermo-mechanical phase-field modeling of shape memory alloy dynamics via isogeometric analysis. (1st July 2015)

• Record Type: Journal Article
• Authors: Dhote, R.P.; Gomez, H.; Melnik, R.N.V.; Zu, J.
• Is Part Of: Computers & structures. Volume 154(2015)
• Page Start: 48
• Page End: 58
• Publication Date: 2015-07-01
• Subjects: Shape memory alloys -- Phase-field -- Thermo-mechanical -- Isogeometic analysis; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2015.02.017
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: Proposed isogeometric analysis for 3D phase-field modeling of shape memory alloys. Numerical examples show geometrical flexibility, accuracy and robustness of our approach. Microstructure morphology is in qualitative agreement with the literature. Abstract: The paper focuses on numerical simulation of the 3D phase-field (PF) equations for modeling cubic-to-tetragonal martensitic transformations in shape memory alloys (SMAs), their complex microstructures and thermo-mechanical behavior. The straightforward solution to the fourth-order diffuse interface 3D PF equations, based on the Landau–Ginzburg potential, is numerically solved using an isogeometric analysis. We present microstructure evolution in different geometries of SMA nanostructures under temperature-induced phase transformations to illustrate the geometrical flexibility, accuracy and robustness of our approach. The simulations successfully capture the dynamic thermo-mechanical behavior of SMAs observed experimentally.