Non-linear elastic behavior of Ni-Fe-Ga(Co) shape memory alloy and Landau-energy landscape reconstruction

2021 ◽  
pp. 117530
Author(s):  
Kristýna Zoubková ◽  
Hanuš Seiner ◽  
Petr Sedlák ◽  
Elena Villa ◽  
Masaki Tahara ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Energy Landscape ◽  
Elastic Behavior ◽  
Linear Elastic ◽  
Landscape Reconstruction ◽  
Non Linear

Development of a shape memory alloy multiple-point injector for chemotherapy

2005 ◽  
Vol 219 (3) ◽  
pp. 213-217 ◽  
Author(s):  
W Xu ◽  
T G Frank ◽  
A Cuschieri
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Direct Injection ◽  
Element Model ◽  
Multiple Point ◽  
Linear Elastic ◽  
Outer Needle ◽  
Non Linear ◽  
Deformation Force ◽  
Medical Needle

A medical needle is described that allows injection to take place at multiple sites through a single stab wound. This is achieved by extruding multiple, thin, and curved internal needles from a larger, straight, outer needle. The development and finite element modelling of the shape memory alloy (SMA) inner needles is presented in this paper. A non-linear elastic element model was used in this process to allow for the non-linear properties of the alloy and the large deformations that occur. The model provided maximum strain values and penetration forces for the inner needles. The deformation force on the tip of the needle was measured against displacement to confirm the predicted penetration force. Applications for the device include the treatment of liver cancer by direct injection of alcohol into the tumours.

Non-linear acoustic properties and acoustic-mode vibrational anharmonicity of 18R martensite Cu-Zn-Al shape-memory alloy

1998 ◽  
Vol 10 (43) ◽  
pp. 9737-9746 ◽  
Author(s):  
Alfons Gonzàlez-Comas ◽  
Lluís Mañosa ◽  
M Cankurtaran ◽  
G A Saunders ◽  
F C Lovey
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Acoustic Mode ◽  
Acoustic Properties ◽  
Vibrational Anharmonicity ◽  
Non Linear

Non-linear elastic behavior of light fibrous materials

1999 ◽  
Vol 12 (1) ◽  
pp. 157-162 ◽  
Author(s):  
M. Baudequin ◽  
G. Ryschenkow ◽  
S. Roux
Keyword(s):  
Elastic Behavior ◽  
Fibrous Materials ◽  
Linear Elastic ◽  
Non Linear

Study on Shape Memory Alloy Plate with Circular Hole under Biaxial Uneven Tension

2012 ◽  
Vol 457-458 ◽  
pp. 994-997
Author(s):  
Bo Zhou ◽  
Xu Kun Li ◽  
Gang Ling Hou
Keyword(s):  
Phase Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Circular Hole ◽  
Complex Stress ◽  
Complex Stress State ◽  
Transformation Model ◽  
Alloy Plate ◽  
Linear Elastic ◽  
The One

This paper focuses on the thermo-mechanical behaviors of a shape memory alloy (SMA) plate with a circular hole under biaxial uneven tension. The phase transformation behaviors of SMA under complex stress state are formulated based on the one-dimensional phase transformation model developed by Zhou and Yoon. The stress field equation of the SMA plate with a circular hole is derived according to linear elastic mechanics. The phase transformation behaviors near the region around the circular hole are numerically simulated under different conditions of applied stress.

scholarly journals Calculation of Linear and Non-Linear Elastic Properties of Polycrystalline Materials by Use of a Cluster Model

1997 ◽  
Vol 28 (3-4) ◽  
pp. 261-271 ◽  
Author(s):  
H. Kiewel ◽  
H. J. Bunge ◽  
L. Fritsche
Keyword(s):  
Elastic Properties ◽  
Grain Shape ◽  
Cluster Method ◽  
Elastic Behavior ◽  
Polycrystalline Materials ◽  
Linear Elastic ◽  
Effective Elastic Constants ◽  
Real Material ◽  
Non Linear ◽  
Effective Constants

In the present paper we have put together some results of a cluster method that allows the calculation of linear and also non-linear effective elastic constants of polycrystalline materials within an iterative self-consistent scheme. The conceptual idea consists in simulating the real material by a suitably chosen cluster of single grains. One can then determine the elastic properties of the material under study by examining the elastic behavior of the cluster. The method is capable of resolving the effect of the grain shape, that is determined by the coordination number of the grains on the effective constants.

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