Elasto-plastic stress analysis in simply supported thermoplastic laminatedplates under thermal loads

Citation
Nb. Bektas et O. Sayman, Elasto-plastic stress analysis in simply supported thermoplastic laminatedplates under thermal loads, COMP SCI T, 61(12), 2001, pp. 1695-1701
Citations number
15
Categorie Soggetti
Material Science & Engineering
Journal title
COMPOSITES SCIENCE AND TECHNOLOGY
ISSN journal
02663538 → ACNP
Volume
61
Issue
12
Year of publication
2001
Pages
1695 - 1701
Database
ISI
SICI code
0266-3538(2001)61:12<1695:ESAISS>2.0.ZU;2-Q
Abstract
In this study, an elasto-plastic stress analysis is carried out on symmetri c cross-ply [0 degrees /90 degrees](2) and symmetric angle-ply [30 degrees/ -30 degrees](2), [45 degrees/-45 degrees](2), [60 degrees/-60 degrees](2) t hermoplastic laminated plates. Laminated composite plates are simply suppor ted and subjected to constant temperature change through the thickness. An analytical solution is performed for satisfying thermoelasto-plastic stress /strain relationships and boundary conditions for small plastic deformation s. The composite materials are assumed to be perfectly plastic. The Tsai-Hi ll theory is used as a yield criterion. Residual stress components, (sigma (x))(r) and for cross-ply laminated plates have some magnitudes but (tau (x y))(r) are zero. The magnitudes of residual stress components increase grad ually depending on the temperature increment. For symmetric angle-ply lamin ated plates, residual stresses are found zero except (tau (xy))(r). (C) 200 1 Published by Elsevier Science Ltd. All rights reserved.