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原文传递 Development of Pressure-Impulse Diagrams for Framed PVB-Laminated Glass Windows

题名：	Development of Pressure-Impulse Diagrams for Framed PVB-Laminated Glass Windows
正文语种：	英文
作者：	Suwen Chen1; Xing Chen2; Guo-Qiang Li3; Yong Lu4
作者单位：	1Professor, State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji Univ., Shanghai 200092, China (corresponding author). 2Ph.D. Student, College of Civil Engineering, Tongji Univ., Shanghai 200092, China. 3Professor, College of Civil Engineering, Tongji Univ., Shanghai 200092, China. 4Professor, School of Engineering, Institute for Infrastructure and Environment, Univ. of Edinburgh, Edinburgh EH9 3JL, UK.
关键词：	Framed glass window; Polyvinyl butyral (PVB)-laminated glass; Blast loading; P-I diagram; Failure modes;Analytical method
摘要：	This paper investigates isodamage criteria for framed PVB (polyvinyl butyral) laminated glass panels subjected to blast load. Isodamage criteria are presented in the form of pressure-impulse (P-I) diagrams, and a methodology for the generation of the P-I diagrams for laminated glass was developed based on numerical simulation studies and the energy method. Three damage levels were classified in accordance with the conditions identified in standards, namely (1) the glass crack limit, (2) the PVB rupture limit, and (3) overall detachment with a specific velocity after the PVB ruptures. Based on nonlinear finite-element analysis, the governing failure modes of the glass panel in both impulsive and quasi-static regions for each damage level were identified and the corresponding deflection functions were determined. A simplified PVB tensile bar model is proposed to describe the local tensile failure of PVB laminated glass corresponding to Damage Level III under impulsive loading. The pressure and impulse asymptotes of framed PVB-laminated glass for different damage levels were derived using the energy balance principle. The proposed method was validated through comparison with published experimental data and further numerical results. This method can provide a reference for engineering design and hazard estimation of framed PVB-laminated glass against blast loading and can be extended to laminated glazing with other interlayers.
出版年：	2019
期刊名称：	Journal of Structural Engineering
卷：	145
期：	3
页码：	1-18