基于新型梁型试样的汽车PVB夹层玻璃I+II混合模式断裂行为数值分析

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI:10.5267/j.esm.2023.5.004

Alireza Ashkpour, J. Bidadi, H. S. Googarchin

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引用次数: 0

摘要

夹层玻璃是一种由夹在两层玻璃之间的聚合物夹层(如聚乙烯醇丁醛PVB)组成的复合结构。随着夹层玻璃在汽车等先进工业领域的应用越来越广泛，研究这种结构的断裂行为具有重要意义。描述夹层玻璃断裂行为的最关键步骤之一是准确测定夹层的断裂能，通常是聚乙烯醇丁醛(PVB)，这是通过实验方法获得的。到目前为止，已经提出了各种实验室样品来测量夹层玻璃的断裂能，每种样品都有其优点和局限性。本文提出了一种新的加载装置，用于测定矩形夹层玻璃实验室样品的I/II混合模式断裂能。采用ABAQUS商用软件包对四点弯曲矩形梁的加载结构进行了分析。利用该试样，可以测量PVB夹层中纯ⅰ到纯ⅱ组合模态的断裂能。这里提出的几何比文献中其他可用的几何更简单，也不需要复杂的加载机制。研究了裂纹长度比和支护距离对和等断裂参数的影响。

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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Numerical analysis of mixed-mode I+II fracture behavior of automotive PVB laminated glass using a novel beam-type test specimen

Laminated glass is a composite structure consisting of a polymeric interlayer (e.g., polyvinyl butyral PVB) sandwiched between two glass plies. Due to the increasing use of laminated glass (LG) in advanced industries such as automotive sectors, it is of much importance to investigate the fracture behavior of such structures. One of the most critical steps in outlining the fracture behavior of laminated glass is the accurate determination of the fracture energy of the interlayer, usually, polyvinyl butyral (PVB), which is obtained from experimental methods. So far, various laboratory samples have been presented to measure the fracture energy of laminated glass, each of which has its advantages and limitations. In this paper, a new loading setup is proposed for the determination of mixed-mode I/II fracture energy in a rectangular-shape laboratory sample of laminated glass. The loading setup consists of a rectangular beam under a four-point bending which has been analyzed by the commercial ABAQUS software package. By utilizing this specimen, the fracture energy of the combined modes from pure mode I to pure mode II in the PVB interlayer can be measured. The proposed geometry here is simpler than other available geometries in the literature and also it does not require a complex loading mechanism. The effects of crack length ratio and also the support distance on fracture parameters such as and are well investigated.

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来源期刊

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.