Application of Finite Element Analysis to the Interface Decohesion of CFRP/SMA Composite

Abstract:

In this work, finite element calculations were carried out to simulate wire pullout process of the shape memory alloy (SMA) wire/carbon fiber reinforced polymer (CFRP) hybrid composite. Three-dimensional cohesive zone model was used for the bonding interface between the SMA and the CFRP. Phase transformation behavior of the SMA wire was accounted for by using a multi-variant constitutive model. The numerical parameters were fitted using an experimental measurement reported by Jang and Kishi. Young’s modulus of the wire affected the force vs. elongation curve most effectively. It is shown that the actual shear stress profile is not constant but it varies significantly along the axial direction of the wire. Additional toughness due to the SMA wire was higher than the case of a purely elastic wire, and the toughness increment was approximately 21 kJ/m². This value is comparable to the typical toughness value of CFRP.

• Periodical: Applied Mechanics and Materials (Volumes 752-753)
• Pages: 125-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.752-753.125
• Online since: April 2015
• Authors: Noh Yu Kim, Sung Young*
• Keywords: Cohesive Zone Model, Composite, Fiber Pullout, Finite Element Analysis (FEA)

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