Open AccessComputation of mode I strain energy release rate of symmetrical and asymmetrical sandwich structures using mixed finite element
Author(s) -
Amina Mohamed Ben Ali,
Salah Bouziane,
Hamoudi Bouzerd
Publication year - 2021
Publication title -
frattura ed integrità strutturale
Language(s) - English
Resource type - Journals
ISSN - 1971-8993
DOI - 10.3221/igf-esis.56.19
Subject(s) - strain energy release rate , cantilever , delamination (geology) , finite element method , materials science , structural engineering , strain energy , composite material , aerospace , composite number , computation , mode (computer interface) , beam (structure) , engineering , computer science , paleontology , subduction , biology , tectonics , aerospace engineering , algorithm , operating system
The use of composite materials is on the rise in different engineering fields, the main advantage of these materials for the aerospace industry is their low weight for excellent mechanical qualities. The analysis of failure modes, such as delamination, of these materials has received great attention from researchers. This paper proposes a method to evaluate the mode I Strain Energy Release Rate (SERR) of sandwich structures. This method associated a two-dimensional mixed finite element with virtual crack extension technique for the analysis of interfacial delamination of sandwich beams. A symmetrical Double Cantilever Beam (DCB) and asymmetrical Double Cantilever Beam (UDCB) have been analyzed in this study. The comparison of the results obtained by this method and those found in the literature shows efficiency and good precision for the calculation of Strain Energy Release Rate (SERR).