对称楔形压头作用下玻璃裂纹的产生及扩展规律

华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (7): 65-69.

对称楔形压头作用下玻璃裂纹的产生及扩展规律

万珍平刘亚俊汤勇叶邦彦

华南理工大学机械工程学院广东广州510640

收稿日期:2003-12-30 出版日期:2004-07-20 发布日期:2015-09-09
通信作者: 万珍平（1971－）男博士讲师主要从事现代加工理论、技术及质量控制的研究． E-mail: zhpwan＠scut.edu.cn
作者简介:万珍平（1971－）男博士讲师主要从事现代加工理论、技术及质量控制的研究．

Initiation and Propagation Laws of the Glass Cracks in Specimens Subject to Normal Loading by Under the Action of Symmetric Wedges

Wan Zhen-ping Liu Ya-jun Tang Yong Ye Bang-yan

College of Mechanical EngineeringSouth China Univ．of Tech．Guangzhou510640GuangdongChina

Received:2003-12-30 Online:2004-07-20 Published:2015-09-09
Contact: 万珍平（1971－）男博士讲师主要从事现代加工理论、技术及质量控制的研究． E-mail: zhpwan＠scut.edu.cn
About author:万珍平（1971－）男博士讲师主要从事现代加工理论、技术及质量控制的研究．

摘要/Abstract

摘要： 玻璃在各个尖端科技中的应用越来越广泛对其加工精度的要求也愈来愈高玻璃切削因能高效、低成本获得各种形状的精密玻璃零件而日益受到重视．为了获得高精度的加工表面便于刀具设计和切削参数选择本文中研究了玻璃在对称楔形压头作用下的裂纹产生和扩展规律．研究结果表明采用楔角在30°～120°之间的对称楔印压玻璃时玻璃裂纹的产生和扩展规律是相同的；采用楔角等于或大于150°的对称楔印压玻璃时裂纹的产生及扩展规律具有特殊性．文中还研究了采用楔角在30°～120°之间的对称楔印压玻璃时中位裂纹长度与载荷的关系．

关键词: 玻璃切削, 对称楔形压头, 印压, 玻璃裂纹

Abstract: With more and more applications of glass in advanced science fieldsthe demand for glass machining preci -sion increases greatly．More and more attention is paid to glass cutting because of high efficiencylow cost and precise glass parts with various shapes．In order to improve the machining precision of the part surfaces and to facilitate the tooldesign and cutting parameter selectionthe initiation and propagation laws of glass cracks in specimens subject to nor-mal loading by symmetric wedges were investigated．The research results show that the initiation and propagation laws are the same with the interior symmetric wedge angles of30°～120°while the laws are different with the interior sym-metric wedge angles equal to or more than150°．The relationship between the medial crack length and the normal load-ing was also investigated when specimens are indented by symmetrical wedges with the interior angles of30°～120°．

Key words: glass cutting, symmetric wedges, indentation, glass crack

万珍平, 刘亚俊, 汤勇, 等. 对称楔形压头作用下玻璃裂纹的产生及扩展规律[J]. 华南理工大学学报(自然科学版), 2004, 32(7): 65-69.

Wan Zhen-ping, Liu Ya-jun, Tang Yong, et al. Initiation and Propagation Laws of the Glass Cracks in Specimens Subject to Normal Loading by Under the Action of Symmetric Wedges[J]. Journal of South China University of Technology(Natural Science Edition), 2004, 32(7): 65-69.

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