Optimal design of damping layers in SMA/GFRP laminated hybrid composites. (12th September 2017)

• Record Type: Journal Article
• Authors: Haghdoust, P; Cinquemani, S; Conte, A Lo; Lecis, N
• Is Part Of: Smart materials and structures. Volume 26:Number 10(2017:Oct.)
• Publication Date: 2017-09-12
• Subjects: shape memory alloys -- high damping -- composite -- optimization; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/aa87dc
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: This work describes the optimization of the shape profiles for shape memory alloys (SMA) sheets in hybrid layered composite structures, i.e. slender beams or thinner plates, designed for the passive attenuation of flexural vibrations. The paper starts with the description of the material and architecture of the investigated hybrid layered composite. An analytical method, for evaluating the energy dissipation inside a vibrating cantilever beam is developed. The analytical solution is then followed by a shape profile optimization of the inserts, using a genetic algorithm to minimize the SMA material layer usage, while maintaining target level of structural damping. Delamination problem at SMA/glass fiber reinforced polymer interface is discussed. At the end, the proposed methodology has been applied to study the hybridization of a wind turbine layered structure blade with SMA material, in order to increase its passive damping.