Analysis of sandwich beam structures using kriging based higher order models. (January 2015)

• Record Type: Journal Article
• Authors: Loja, M.A.R.; Barbosa, J.I.; Mota Soares, C.M.
• Is Part Of: Composite structures. Volume 119(2015)
• Page Start: 99
• Page End: 106
• Publication Date: 2015-01
• Subjects: Kriging interpolation -- Higher-order shear deformation theory -- Structural analysis -- Bossak–Newmark method -- Functionally graded sandwich structures -- Mori–Tanaka homogenization; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2014.08.019
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: Functionally graded composite materials can provide continuously varying properties, which distribution can vary according to a specific location within the composite. More frequently, functionally graded materials consider a through thickness variation law, which can be more or less smoother, possessing however an important characteristic which is the continuous properties variation profiles, which eliminate the abrupt stresses discontinuities found on laminated composites. This study aims to analyze the transient dynamic behavior of sandwich structures, having a metallic core and functionally graded outer layers. To this purpose, the properties of the particulate composite metal–ceramic outer layers, are estimated using Mori–Tanaka scheme and the dynamic analyses considers first order and higher order shear deformation theories implemented though kriging finite element method. The transient dynamic response of these structures is carried out through Bossak–Newmark method. The illustrative cases presented in this work, consider the influence of the shape functions interpolation domain, the properties through-thickness distribution, the influence of considering different materials, aspect ratios and boundary conditions.