Numerical analysis of disbonding in sandwich structures using 1D finite elements. (15th November 2020)

• Record Type: Journal Article
• Authors: Qi, L.; Nagaraj, M.H.; Carrera, E.; Gao, C.F.; Petrolo, M.
• Is Part Of: Composite structures. Volume 252(2020)
• Publication Date: 2020-11-15
• Subjects: Disbonding -- Sandwich structures -- CUF -- FEM -- Cohesive elements; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2020.112717
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: Structural theories based on 1D component-wise models are proposed to investigate the progressive disbonding in sandwich structures. The structural framework adopts the Carrera Unified Formulation to generate higher-order theories of structures via a variable kinematic approach. The component-wise approach, formulated within the Lagrange polynomial based CUF models, permits modelling of various components of a complex structure through 1D CUF models at reduced computational costs and 3D accuracy. The disbonding constitutive models are retrieved from well-established works in the literature and based on cohesive elements. The results verify the accuracy of 1D models with some 10–20% computational time as compared to 3D finite elements.