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.

Numerical analysis of disbonding in sandwich structures using 1D finite elements / Qi, L.; Nagaraj, M. H.; Carrera, E.; Gao, G. F.; Petrolo, M.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - ELETTRONICO. - 252:(2020). [10.1016/j.compstruct.2020.112717]

Numerical analysis of disbonding in sandwich structures using 1D finite elements

M. H. Nagaraj;E. Carrera;M. Petrolo
2020

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2842634