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Hybrid glass elements for parapets – experimental analysis and numerical simulation of the load‐bearing behaviour
Author(s) -
GieseHinz Johannes,
Weller Bernhard
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.945
Subject(s) - materials science , composite number , composite material , stiffness , deformation (meteorology) , hyperelastic material , finite element method , bending , stress (linguistics) , ultimate tensile strength , linear elasticity , silicone , structural engineering , engineering , linguistics , philosophy
ABSTRACT This study assessed the deformation behaviour and the stress distribution of a new kind of composite plate consisting of a glass pane and high‐pressure laminate. The two single plates were laminarly bonded with a silicone. Hence, the composite plate reacted as a unit, thus the stiffness is higher than that of the respective single components. By means of linear calculation approaches, with full composite or without composite behaviour, the deformation and the stress distribution of composites can be descripted. However, the interlayer is be idealised to a thin layer with a maximal high or minimal shear stiffness. First comparisons showed big differences between the calculated deformations and the stresses of those two approaches. Hence, in this study, experiments with the composite plate were aimed to evaluate the quality of that linear calculation. The four‐point bending tests, according to DIN EN 1288‐3, measured the deformation, while the tensile stress were measured in six points. The results show increasing differences between the calculation approaches and the measured values when the load of the plate was increased. Due to the linear calculation, it is not possible to consider non‐linear effects or higher stresses on the plate edges. Hence, standard calculations were unsuitable to describe the mechanical behaviour of the new composite plate so other calculation approaches were necessary for glass hybrid plates. Therefore, this study assessed a non‐linear finite element analysis of the new composite plate. Simple material models were used for the complex behaviour of the hyperelastic silicones. Thus, the study shows that calculations can be done quickly and easily for the forces and deformations relevant for the application.