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Pseudoelasticity and Shape Memory
1986Alloys with shape memory are characterized by a strong dependence of the load-deformation behaviour upon temperature. At low temperatures they behave much like plastic bodies with initial elastic deformation, yield and residual deformation after unloading, but at higher temperatures they exhibit pseudoelastic behaviour, i.e.
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State Functions for a Pseudoelastic Body
1982The shape of the load–deformation curves of a pseudo-elastic body depends strongly on the temperature. While at low temperatures the body exhibits properties akin to those of a plastic body, it behaves like a true (non-linear) elastic body at high temperatures.
I. Müller, K. Wilmanski
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Thermodynamics of pseudoelasticity ?an analytical approach
Acta Mechanica, 1993The phenomenon of pseudo-elasticity is connected with a phase transition. Its description requires a non-convex free energy and a non-monotone load-deformation curve. Realistic functions like that are too complicated to permit the analytic calculation of phase equilibria and the evaluation of, stability properties of a phase mixture.
S. Fu, Y. Huo, I. M�ller
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Equilibrium thermodynamics of pseudoelasticity and quasiplasticity
Continuum Mechanics and Thermodynamics, 1996Motivated by recent experimental results by Glasauer [7], a thermodynamic theory of shape memory alloys is proposed, which includes not only the high temperature - pseudoelastic - behavior but also the low temperature range of quasiplasticity. Due to the occurance of three different phases - austenite and two martensitic variants - several cases of two-
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Influence of Hardening and Inhomogeneity on Internal Loops in Pseudoelasticity
ZAMM, 2000This paper is devoted to mathematical modeling of hysteretic behavior exibited by shape memory alloys in the pseudoelastic temperature range. The quasistatic phase transformations are considered, which occur at a constant temperature above the austenite finish temperature.
Kuczma, M. S., Mielke, A.
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A two‐invariant pseudoelastic model for reservoir compaction
International Journal for Numerical and Analytical Methods in Geomechanics, 2017SummaryPredicting the deformations of deep reservoirs due to fluid withdrawal/injection is a challenging task that could have important environmental, social, and economical impacts. Finite element models, if endowed with an appropriate constitutive law, represent a useful tool for computing the displacements, the deformations, and the stress ...
Spiezia, N. +3 more
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The pseudoelasticity of a Ni45Ti50Cu5 alloy
2000Since several years the Ni(50-X)Ti50CuX alloys are attentively considered for the interesting features related to the B2-->B19' transformation involved in the pseudoelastic behavior. In contrast with the binary NiTi, where two martensitic transformations, B2-->R-phase and R-phase-->B19' can overlap, in the ternary alloy a single transformation is ...
Ranucci T, Besseghini S, Airoldi G
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Processing and surface treatments for pseudoelastic wires and strands
Materials and Manufacturing Processes, 2016The aim of this work is a preliminary investigation of the manufacturing process of Ni-Ti and Ni-Ti-Cr wires and strands to be applied in mechanical applications. The diamond wires for stone cutting were used as a case study. A prototype of multi-wire Ni-Ti strand has been prepared, characterized and thermally treated in this research.
SPRIANO, SILVIA MARIA +6 more
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An Evaluation of Pseudoelastic Descriptors Used in Arterial Mechanics
Journal of Biomechanical Engineering, 1999Understanding how transmural distributions of stress relate to the mechanisms of vascular growth, remodeling, and disease necessitates computations that are based on a constitutive relation for the arterial wall. Although a number of candidate relations are in the literature, they have not been compared in detail.
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Multi-scale pseudoelasticity of NiTi alloys fabricated by laser additive manufacturing
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2021Weilong Cong, Dongzhe Zhang, Yunze Li
exaly