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Numerical
homogenization techniques for the evaluation of mechanical
behavior of a composite with SMA inclusions
Valerio Alecci, Silvia Briccoli Bati and Giovanna Ranocchiai |
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Vol. 4 (2009), No. 10, 1675–1688
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Abstract |
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Numerical procedures are developed for the homogenization and evaluation of the stress field in a composite as a consequence of the presence of embedded SMA (shape-memory alloy) wires. In particular, the elastic field developed at the end of the SMA wire self-strain process is studied, knowledge of which is necessary to evaluate the feasibility of such a hybrid composite. First, the numerical procedures are applied to the study of both a representative volume element (RVE) included in a theoretically infinite periodic medium and a RVE located near the medium free boundary, in order to evaluate the tangential stress field generated at the end of the fiber; then they are applied to the study of a plate able to bend after the effect of self-strain of the SMA wire. Observations are reported about the obtained results and about the similarities and the differences between the two problems. |
Keywords
numerical homogenization, composite materials, shape-memory
alloys
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Milestones
Received: 24 September 2008
Revised: 29 June 2009
Accepted: 4 July 2009
Published: 27 February 2010
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Authors |
| Valerio Alecci | |
| Dipartimento di Costruzioni Università di Firenze Piazza Brunelleschi 6 50121 Firenze Italy |
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| Silvia Briccoli Bati | |
| Dipartimento di Costruzioni Università di Firenze Piazza Brunelleschi 6 50121 Firenze Italy |
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| Giovanna Ranocchiai | |
| Dipartimento di Costruzioni Università di Firenze Piazza Brunelleschi 6 50121 Firenze Italy |
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