Effect of boundary conditions on tensile bending strength of glass under four-point bending

被引：4

作者：

Liu, Hongliang ^{[1
]}

Jia, Liang-jiu ^{[1
,2
]}

机构：

[1] Tongji Univ, Coll Civil Engn, Dept Disaster Mitigat Struct, 1239 Siping Rd, Shanghai 200092, Peoples R China

[2] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 384卷

基金：

中国国家自然科学基金;

关键词：

Structural glass; Tensile bending strength; Four-point bending test; Boundary conditions; Friction; CRITICAL FLAW; PREDICTION; 3-POINT;

D O I：

10.1016/j.conbuildmat.2023.131479

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Tensile bending strength is the most crucial property of structural glass. An evaluation procedure of tensile bending strength is specified in EN 1288-3 using the four-point bending (4PB) tests. However, the effects of boundary conditions of the supporting and bending rollers on tensile bending strength have not been well documented. The purpose of this paper is to provide a modified procedure for evaluating tensile bending strength considering the combined effects of boundary conditions and friction. The 4PB test method was re-evaluated by performing a comprehensive experimental, analytical and numerical study on ultra-white annealed glass (ANG) and fully tempered glass (FTG) subjected to large deflection. The results demonstrate that different boundary conditions can lead to a deviation between the EN 1288-3 standard method and the newly proposed evaluation procedure, which is strongly dependent on boundary conditions and friction effects. If laboratory conditions permit, it is highly recommended to ensure that the supporting and bending rollers can rotate freely during the 4PB test to avoid overestimating the tensile bending strength of structural flat glass. Otherwise, it is necessary to employ the newly proposed evaluation procedure to obtain the tensile bending strength accurately.

引用

页数：14

共 42 条

[1]

[Anonymous], 1984, 52303 DIN 1

[2]

[Anonymous], 2000, EN 1288-1

[3]

[Anonymous], 2000, EN 1288-3

[4]

[Anonymous], 2017, C15802 ASTM

[5] Influence of bending rotations on three and four-point bend end notched flexure tests [J].

Arrese, A. ;

Mujika, F. .

ENGINEERING FRACTURE MECHANICS, 2008, 75 (14) :4234-4246

[6] GLASS FAILURE PREDICTION MODEL [J].

BEASON, WL ;

MORGAN, JR .

JOURNAL OF STRUCTURAL ENGINEERING-ASCE, 1984, 110 (02) :197-212

[7] Experimental investigation of static and fatigue behaviour of composites honeycomb materials using four point bending tests [J].

Belouettar, S. ;

Abbadi, A. ;

Azari, Z. ;

Belouettar, R. ;

Freres, P. .

COMPOSITE STRUCTURES, 2009, 87 (03) :265-273

[8]

BLANK K, 1994, GLASTECH BER-GLASS, V67, P9

[9]

BLANK K, 1990, GLASTECH BER-GLASS, V63, P135

[10]

Brown W.G., 1974, PRACTICABLE FORMULAT

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