In this work, a volumetric-deviatoric split in microplane formulation is considered for modeling of shape memory alloys. In the microplane theory, macroscopic stress tensor is projected into the microplane stresses that are decomposed to either Volumetric-Deviatoric-Tangential (V-D-T) split or Volumetric-Deviatoric (V-D) split. Then 1D constitutive laws are defined between associated microplane stress and microplane strain on any plane. The homogenization process is used according to which macroscopic strain tensor is obtained by integration strains on all orientations at a point. The constitutive formulation based on V-D-T split uses the principle of complementary virtual work (PCVW) to derive macroscopic strain tensor. It is shown that in the microplane models based on V-D-T split — which are derived from the PCVW — the thermodynamic consistency cannot be guaranteed in all loading conditions and the second thermodynamic law might violate. It is shown that a special case of V-D-T split, known as the V-D split, is an effective approach to remedy violation from the second law of thermodynamics. Numerical comparison of the microplane formulation based on V-D-T split and V-D split shows that alternative splits predict the same result in some different loadings. The efficiency of the V-D split is its thermodynamic consistency.
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ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 16–18, 2013
Snowbird, Utah, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5603-1
PROCEEDINGS PAPER
Microplane Modeling of Shape Memory Alloys in an Alternative Formulation
Reza Mehrabi,
Reza Mehrabi
Isfahan University of Technology, Isfahan, Iran
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Mahmoud Kadkhodaei,
Mahmoud Kadkhodaei
Isfahan University of Technology, Isfahan, Iran
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Mohammad Elahinia
Mohammad Elahinia
The University of Toledo, Toledo, OH
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Reza Mehrabi
Isfahan University of Technology, Isfahan, Iran
Mahmoud Kadkhodaei
Isfahan University of Technology, Isfahan, Iran
Mohammad Elahinia
The University of Toledo, Toledo, OH
Paper No:
SMASIS2013-3109, V001T03A022; 5 pages
Published Online:
February 20, 2014
Citation
Mehrabi, R, Kadkhodaei, M, & Elahinia, M. "Microplane Modeling of Shape Memory Alloys in an Alternative Formulation." Proceedings of the ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation. Snowbird, Utah, USA. September 16–18, 2013. V001T03A022. ASME. https://doi.org/10.1115/SMASIS2013-3109
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