Propagation process of delamination and local deformation on metal-polymer laminated materials

Autor:	Sakaguchi Masashi, Yoji Shibutani, Hiroshi Kitagawa, Masaki Akagi
Rok vydání:	1990
Předmět:	Fiber pull-out Materials science Viscoplasticity Mechanical Engineering Delamination General Engineering Stiffness Plasticity Stress (mechanics) Mechanics of Materials medicine Shear stress General Materials Science medicine.symptom Deformation (engineering) Composite material Stress concentration
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A. 56:201-206
ISSN:	1884-8338 0387-5008
DOI:	10.1299/kikaia.56.201
Popis:	Interaction between delamination and local deformation on a metal-polymer laminated material subjected to tension under plane-strain conditions is investigated numerically using a finite element method. The metal modelled is an Al alloy assumed to be plastic and the polymer is a PET to be viscoplastic. The delamination process is modelled as the destruction of the adhesive between laminated materials under the specified stress criteria in which the allowable shearing stress along the interface and positive normal stress perpendicular to the interface are prescribed. The results show that delamination at the early deformation is mainly caused by stress concentration around the void which is modelled by diminishing the stiffness of the element satisfied with this criteria. Local deformation starts in the metal after delamination is rapidly propagated at the relatively large strain field. The failure process from delamination of adhesive obtained from numerical analyses is found to be in reasonable agreement with experimental observations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052741cdd95a28d755c1d6b5d7fb6b2f https://doi.org/10.1299/kikaia.56.201 Zobrazit plný text záznamu