多向预压应力下玻璃切割模型及有限元仿真研究

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英文篇名：Study on Numerical Investigation of Glass Materials Machining Under Multi-directional Compressive Pre-stress Based on the Finite-Element Method 作者：陈丰 ; 谢占山 ; 张海涛 英文作者：CHEN Feng;XIE Zhan-shan;ZHANG Hai-tao;School of Mechanical Engineering,Anhui Science and Technology University; 关键词：玻璃切割 ; 多向预压应力 ; 力学模型 ; 裂纹动态扩展 英文关键词：Glass cutting;;Multi-directional compressive pre-stress;;Mechanics model;;Dynamic cracks extension 中文刊名：ANJS 英文刊名：Journal of Anhui Science and Technology University 机构：安徽科技学院机械工程学院; 出版日期：2014-01-15 出版单位：安徽科技学院学报 年：2014 期：v.28;No.116 基金：安徽省高校省级自然科学研究重点项目(KJ2013A080);; 安徽科技学院重点建设学科基金项目(AKXK20102-5);; 安徽科技学院自然科学基金(ZRC2013376) 语种：中文; 页：ANJS201401012 页数：6 CN：01 ISSN：34-1300/N 分类号：52-57

摘要

以脆性材料断裂的微裂纹理论和压痕断裂力学为基础,建立了多向预压应力下玻璃切割力学模型,并进行了有限元分析。仿真模拟了多向预压应力下玻璃切割加工过程,分析切割过程中预压应力对裂纹动态扩展与刀轮受力的影响,合理施加多向预压应力,可以有效降低横向裂纹的扩展,增加纵向裂纹的深度,从而提高玻璃切割边部质量和效率。
        Based on the micro-cracks theory of brittle materials fracture and indentation fracture mechanics,mechanics model for glass materials machining under multi-directional compressive pre-stress was proposed and was analyzed basing on the finite element method. The process of glass materials machining under multi-directional compressive pre-stress was simulated,the effects of pre-stress and other process parameters on dynamic cracks extension and the force applied on the cutter wheel were analyzed. Multi-directional compressive pre-stress reasonably applied to the glass materials can effectively reduce the expansion of lateral cracks and increase the depth of median cracks,that can improve the quality of glass cutting edge and cutting efficiency.

引文

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