PSI - Issue 41

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 41 (2022) 361–371

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Abstract Functionally graded materials (FGM) are nonhomogeneous materials at the microscopic level, which have a gradation in their structure and composition with the properties of the material varying along one or more directions. The applications of these materials are in the fields: Aerospace, Automotive, Biomedical-Medical, Optoelectronics-electronics, Machinery, Energy, Marine, etc. In the present work the problem of a sandwich beam with metal core and FGM face sheets and a sandwich beam with ceramic core and FGM face sheets under flexural loading is studied numerically via the Finite Element Method. The load is a distributed load on the upper face sheet of the beam. The elements that will be used are 8-node two-dimensional plane quadrilateral isoparametric elements. The elements used for the FGM layers, are graded finite elements where as for the core are homogeneous elements. The advantage of this study is the utilization of 8-node two-dimensional plane quadrilateral graded isoparametric elements in the FGM face sheets, for the study of a sandwich beam. The effect of the volume fraction index on the stress fields is examined. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Keywords: Sandwich beam;Finite element method; Functionally graded materials This is a 2nd Mediterranean Conference on Fracture and Structural Integrity Computational analysis of a sandwich beam with FGM face sheets under flexural loading Efstathios E.Theotokoglou a , Dimitrios A. Mallios a * a Department of Mechanics,Laboratory of Strength of Materials, School of Applied Mathematical and Physical Sciences, National Technical University of Athens 9 Iroon Polytechniou, Zografou, GR 15773, Athens, Greece ios E. a a

* Dimitrios A. Mallios. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail address: dmallios@mail.ntua.gr

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors.

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.042