不同夹层厚度对夹层玻璃抗冲击性能影响的研究

IF 3.4 3区工程技术 Q2 ENGINEERING, CIVIL

International Journal of Structural Stability and Dynamics Pub Date : 2023-10-12 DOI:10.1142/s0219455424501530

Youning Zhang, Xiangrui Wei, Qian Wang, Jingjing He, Yunkuan Zhang, Xiang Wang

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引用次数: 0

摘要

聚乙烯醇丁醛(PVB)夹层玻璃因其显著的缓冲和粘结性能而广泛应用于建筑结构和汽车玻璃中，其夹层厚度对玻璃的整体抗冲击性能有显著影响。本文选取常规夹层玻璃厚度0.76[公式:见文]mm和1.52[公式:见文]mm，采用轻气枪冲击试验结合工业CT扫描-三维重建技术，研究了三种不同冲击速度下夹层玻璃的动态性能和损伤形态。结果表明:PVB夹层厚度与吸能效果显著正相关，但在不同的冲击速度和玻璃厚度下，夹层厚度与抗冲击性能表现出差别化的“边际效应”。在中等冲击速度下，夹层厚度变化对抗冲击性能最为敏感。随着玻璃厚度的增加，抗冲击性能对夹层厚度变化的敏感性降低。根据中速冲击条件下全维裂纹的特征可以看出，夹层在不同应力方向上具有缓冲消散和聚集恢复的功能，夹层厚度是减少玻璃碎片飞扬的关键功能参数。因此，本研究结果可为PVB夹层玻璃的抗冲击性能分析和设计提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Study on the effect of different sandwich thicknesses on the impact resistance of laminated glass

Polyvinyl butyral (PVB) laminated glass is widely used in architectural structures and automotive glass due to its remarkable cushioning and cohesive properties, and its lamination thickness has a significant effect on the overall impact resistance of the glass. In this paper, two conventional laminated glass thicknesses of 0.76[Formula: see text]mm and 1.52[Formula: see text]mm were selected to study the dynamic performance and damage morphology of laminated glass under three different impact velocities using light gas gun impact tests combined with industrial CT scanning-3D reconstruction techniques. The results showed that the PVB sandwich thickness had a significant positive correlation with the energy absorption effect, but under different impact velocities and glass thickness, the sandwich thickness and impact resistance showed a differentiated “marginal effect”. At moderate impact velocities, the impact resistance was most sensitive to the change in sandwich thickness. With the increase in glass thickness, the sensitivity of impact resistance to the change of sandwich thickness decreased. According to the characterization of full-dimensional cracks under medium-velocity impact conditions, it could be seen that the sandwich had the function of buffering dissipation and gathering recovery in different stress directions, and the thickness of the sandwich was a key functional parameter to reduce the flying of glass fragments. Therefore, the results of this study can provide a reference for the analysis and design of the impact resistance of PVB laminated glass.

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来源期刊

International Journal of Structural Stability and Dynamics 工程技术-工程：机械

CiteScore

5.30

自引率

38.90%

发文量

291

审稿时长

4 months

期刊介绍： The aim of this journal is to provide a unique forum for the publication and rapid dissemination of original research on stability and dynamics of structures. Papers that deal with conventional land-based structures, aerospace structures, marine structures, as well as biostructures and micro- and nano-structures are considered. Papers devoted to all aspects of structural stability and dynamics (both transient and vibration response), ranging from mathematical formulations, novel methods of solutions, to experimental investigations and practical applications in civil, mechanical, aerospace, marine, bio- and nano-engineering will be published. The important subjects of structural stability and structural dynamics are placed together in this journal because they share somewhat fundamental elements. In recognition of the considerable research interests and recent proliferation of papers in these subjects, it is hoped that the journal may help bring together papers focused on related subjects, including the state-of-the-art surveys, so as to provide a more effective medium for disseminating the latest developments to researchers and engineers. This journal features a section for technical notes that allows researchers to publish their initial findings or new ideas more speedily. Discussions of papers and concepts will also be published so that researchers can have a vibrant and timely communication with others.