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Investigation and Validation of a Shape Memory Alloy Material Model Using Interactive Fibre Rubber Composites

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Publicado en:Materials vol. 17, no. 5 (2024), p. 1163
Autor principal: Achyuth Ram Annadata
Otros Autores: Acevedo-Velazquez, Aline Iobana, Woodworth, Lucas A, Gereke, Thomas, Kaliske, Michael, Röbenack, Klaus, Cherif, Chokri
Publicado:
MDPI AG
Materias:
Aircraft
Fiber reinforced materials
Finite element method
Design optimization
Simulation
Heat treating
Shape effects
Titanium alloys
Silicones
Wire
Temperature
Superelasticity
Rubber
Smart materials
Robots
Mathematical models
Shape memory alloys
Actuators
Composite materials
Efficiency
Smart structures
Robotics
Elastomers
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Resumen:The growing demand for intelligent systems with improved human-machine interactions has created an opportunity to develop adaptive bending structures. Interactive fibre rubber composites (IFRCs) are created using smart materials as actuators to obtain any desired application using fibre-reinforced elastomer. Shape memory alloys (SMAs) play a prominent role in the smart material family and are being used for various applications. Their diverse applications are intended for commercial and research purposes, and the need to model and analyse these application-based structures to achieve their maximum potential is of utmost importance. Many material models have been developed to characterise the behaviour of SMAs. However, there are very few commercially developed finite element models that can predict their behaviour. One such model is the Souza and Auricchio (SA) SMA material model incorporated in ANSYS, with the ability to solve for both shape memory effect (SME) and superelasticity (SE) but with a limitation of considering pre-stretch for irregularly shaped geometries. In order to address this gap, Woodworth and Kaliske (WK) developed a phenomenological constitutive SMA material model, offering the flexibility to apply pre-stretches for SMA wires with irregular profiles. This study investigates the WK SMA material model, utilizing deformations observed in IFRC structures as a reference and validating them against simulated models using the SA SMA material model. This validation process is crucial in ensuring the reliability and accuracy of the WK model, thus enhancing confidence in its application for predictive analysis in SMA-based systems.
ISSN:1996-1944
DOI:10.3390/ma17051163
Fuente:Materials Science Database