NDLI: Multiscale modeling of thermomechanical behavior of shape memory alloy / polymer composites by finite element method

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Multiscale modeling of thermomechanical behavior of shape memory alloy / polymer composites by finite element method

Content Provider	Semantic Scholar
Author	Bouby, Céline Zahrouni, H. Zineb, Tarak Ben Potier-Ferry, Michel
Copyright Year	2017
Abstract	23 ème Congrès Français de Mécanique Lille, 28 Août au 1 er Septembre 2017 Hybrid materials with multi-physical behavior could be developed to contribute to the emergence of innovative applications taking advantage of the interesting properties of shape memory alloys (SMAs) and polymer components. The fiber-matrix or multilayer composites SMA-Polymer could result in applications in energy harvesting or in sensor-actuators. It is therefore important to have numerical tools for predicting the non-linear multi-physical and multi-scale behavior of these composites. In this paper, we propose a numerical tool for modeling the behavior of SMA / Polymer composites based on the multiscale finite element method. It is an iterative numerical approach where the macro and microstructures are discretized by finite element allowing to deal with complex heterogeneities and behaviors of different phases. The behavior of the SMA phase is described by a thermodynamic approach. The driving forces associated with the internal variables (martensitic volume fraction and mean transformation strain) are derived from the postulate of Gibbs free energy. The behavior of the polymer is assumed to be elastic, linear and isotropic. The procedure is implemented in ABAQUS finite element code via UMAT routine. The stress state, volume fraction of martensite, and the corresponding tangent operators are thus calculated and considered as inputs at each integration point of the mesh of the macro-structure for the calculation of the global equilibrium. This multi-scale approach is validated on some test cases of literature. It will subsequently be applied for the designing of a composite SMA / Polymer application. Mots clefs : Shape memory alloys; Composites; Numerical homogenization; Finite elements.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://cfm2017.sciencesconf.org/133670/document
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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