Computational Models of Laminated Glass Plate under Transverse Static Loading
Laminated glass with Polyvinyl Butyral (PVB) interlayer became a popular safety glass for aircraft windows, architectural and automotive glazing applications. The very soft interlayer, bonding the glass plates, however, has negligible normal stress in transverse loading and it resists mainly by shear stress. The classical laminate theory obeying the principle of the straight normals remaining straight is not valid for laminated glass. Conventional Finite Elements (FE) are used to model the laminated glass in cylindrical bending to investigate the problem. Based on the assumption that the glass layers of a laminated glass plate obey Kirchoff’s classical plate theory and the PVB-interlayer transfer load by shear stress only, the differential equations of a Triplex Laminated Glass (TLG) plate are derived and a special TLG plate FE is elaborated. For each of its nodes, the element has one transverse translational, three rotational, and two additional degrees of freedom representing the slippage between the glass layers. All computational models are compared with experimental tests of a laminated glass strip in cylindrical bending.
KeywordsLaminate Transverse load Computational models
Unable to display preview. Download preview PDF.
The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013), FP7 - REGPOT - 2009 - 1, under grant agreement No:245479. The support by Polish Ministry of Science and Higher Education, Grant No 1471-1/7.PR UE/2010/7, is also acknowledged as well as the support by National Science Fund of Bulgarian Ministry of Education and Science, grand agreement No DDVU 02/052-20.12.2010.
- 8.Sobek W, Kutterer M, Messmer R (2000) Untersuchungen zum Schubverbund bei Verbundsicherheitsglas—Ermittlung des zeit- und temperaturabhängigen Schubmoduls von PVB. Bauingenieur 75:41–47 Google Scholar
- 11.Zienkiewicz O C, Taylor R L (2000) The Finite Flement Fethod (fifth ed) Vol. 2: Solid Mechanics. Butterworth-Heinemann, Oxford Google Scholar