Elastic compensation of linear shape memory alloy actuators using compliant mechanisms

2013 ◽  
Vol 25 (9) ◽  
pp. 1124-1138 ◽  
Author(s):  
Giovanni Scirè Mammano ◽  
Eugenio Dragoni
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Compliant Mechanisms ◽  
Linear Shape

Target shape optimization of functionally graded shape memory alloy compliant mechanisms

2017 ◽  
Vol 30 (9) ◽  
pp. 1385-1396
Author(s):  
Jovana Jovanova ◽  
Mary Frecker ◽  
Reginald F Hamilton ◽  
Todd A Palmer
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Modulus Of Elasticity ◽  
Compliant Mechanisms ◽  
Material Model ◽  
Functionally Graded ◽  
Beam Model ◽  
Shape Error ◽  
Target Shape ◽  
Trade Offs

This article focuses on the design optimization of shape memory alloy compliant mechanisms with functionally graded properties to achieve a user-defined target shape. The functional grading is approximated by allowing the geometry and the modulus of elasticity of each zone to vary. The superelastic phenomenon has been taken into account using a standard nonlinear shape memory alloy material model with linear region of higher modulus of elasticity and a superelastic region with much lower modulus of elasticity. A large deflection beam model is integrated with a multi-objective evolutionary algorithm for constrained optimization of the structure’s mechanical properties and geometry. Examples illustrate the trade-offs between the objectives of minimizing shape error, maximum stress, and volume. It is observed that in the optimized designs, the elastic modulus and the geometry work together in regions where large flexibility is required to achieve the target shape.

EXPERIMENTAL CHARACTERIZATION OF LINEAR SHAPE MEMORY ALLOY ACTUATORS

2019 ◽  
Author(s):  
Adriel Morgado de Moraes ◽  
Luciana Loureiro da Silva Monteiro ◽  
Ricardo Alexandre Amar de Aguiar
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Experimental Characterization ◽  
Linear Shape

Designing compliant mechanisms composed of shape memory alloy and actuated by induction heating

2021 ◽  
Author(s):  
Adrien Thabuis ◽  
Sean Thomas ◽  
Thomas Martinez ◽  
Paolo Germano ◽  
Yves Perriard
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Induction Heating ◽  
Compliant Mechanisms

scholarly journals Design and characterization of linear shape memory alloy actuator with modular stroke

2019 ◽  
Vol 18 ◽  
pp. 223-230 ◽  
Author(s):  
Girolamo Costanza ◽  
Neyara Radwan ◽  
Maria Elisa Tata ◽  
Emanuele Varone
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Shape Memory Alloy Actuator ◽  
Linear Shape

Structure and mobility of martensite variant interfaces in a Cu-Zn-AI shape memory alloy

2003 ◽  
Vol 112 ◽  
pp. 519-522 ◽  
Author(s):  
W. Cai ◽  
J. X. Zhang ◽  
Y. F. Zheng ◽  
L. C. Zhao
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Martensite Variant
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