Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 28, Issue 3-4, Pages 675-683Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2003.08.023
Keywords
safety glass; hyperelasticity; explicit FEM; short-time dynamics
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In this paper, we present a numerical technique to simulate the crash behaviour of laminated safety glass via finite elements. As the main aspect of this work, we consider two coincided elements: a shell element for glass and a membrane element for the hyperelastic PVB-interlayer. We give an overview of hyperelastic models, which are used in crash simulations and investigate the material laws by Blatz-Ko, Mooney-Rivlin and Ogden. The obtained stress-strain curves are fitted by experimental results of the interlayer. For a comparison, we use an one-material-model with piecewise linear plasticity and a laminated glass model assigning material properties to the integration points. As practical applications, we simulate an impact of a sphere into a glass plate and investigate the behaviour of a windscreen during a roof crash. (C) 2003 Elsevier B.V. All rights reserved.
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