Abstract
In this paper, both experimental tests and numerical simulations of Polyvinyl Butyral (PVB) laminated glass pane under low-speed impact were carried out. In order to accurately predict the responses of annealed glass under low-speed impact, a constitutive model combined of the Taylor–Chen–Kuszmaul (TCK) model and the Johnson-Holmquist Ceramic (JH2) model is proposed. In order to describe the tensile damage characteristic of annealed glass, a rate-dependent TCK model is employed. The JH2 model is adopted when the glass material is under compression. The velocity and force of impactor, deflection of central point of glass pane, and the cracking pattern are studied to verify the combined TCK-JH2 model. Furthermore, the effects of the thickness of glass layer and PVB interlayer are investigated.
Highlights
Due to good transparency, annealed glass is often used in window panes and curtain wall systems in modern buildings
It is necessary to analyze the causes of the destruction of glass windows under dynamic loading so as to find a more appropriate constitutive model to describe the process of damage
The numerical results conducted with the elastic model are presented with the red black dotted combined TCK-JH2 model and elastic model are given
Summary
Due to good transparency, annealed glass is often used in window panes and curtain wall systems in modern buildings. Even though the study of glass materials under dynamic loading is vital, there is no suitable constitutive model for numerical simulation yet. Tensile dynamic increment factors (DIF) of annealed glass with respect to strain rate were formulated by Zhang [6]. This implies that the linear elastic model with a single failure criterion are inappropriate in the simulation of failure of glass under the dynamic condition. There are few relative studies on dynamic tensile constitutive of glass materials, especially considering strain rate effect. In order to describe the tensile damage characteristic of annealed glass, a rate-dependent TCK model is employed. The effects of the thickness of glass layer and PVB interlayer are investigated
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