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毛刺形成中的韧性断裂条件及影响

朱云明 樊曙天 王贵成 陈云

朱云明, 樊曙天, 王贵成, 陈云. 毛刺形成中的韧性断裂条件及影响[J]. 机械科学与技术, 2016, 35(6): 896-900. doi: 10.13433/j.cnki.1003-8728.2016.0613
引用本文: 朱云明, 樊曙天, 王贵成, 陈云. 毛刺形成中的韧性断裂条件及影响[J]. 机械科学与技术, 2016, 35(6): 896-900. doi: 10.13433/j.cnki.1003-8728.2016.0613
Zhu Yunming, Fan Shutian, Wang Guicheng, Chen Yun. Influences and Conditions of Ductile Fracture in Forming Process of Burr[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(6): 896-900. doi: 10.13433/j.cnki.1003-8728.2016.0613
Citation: Zhu Yunming, Fan Shutian, Wang Guicheng, Chen Yun. Influences and Conditions of Ductile Fracture in Forming Process of Burr[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(6): 896-900. doi: 10.13433/j.cnki.1003-8728.2016.0613

毛刺形成中的韧性断裂条件及影响

doi: 10.13433/j.cnki.1003-8728.2016.0613
基金项目: 

国家自然科学基金项目(51075192、51305050)资助

详细信息
    作者简介:

    朱云明(1974-),副教授,博士,研究方向为精密加工、切削理论,zhu_y_m@163.com

Influences and Conditions of Ductile Fracture in Forming Process of Burr

  • 摘要: 在不同的切削条件下工件的棱边会形成毛刺与亏缺两种不同的形态。亏缺的形成同样影响着工件的精度与使用性能。基于Normalized Cockroft&Latham断裂准则建立了毛刺与亏缺形成的有限元热-力耦合模型,通过模拟结果分析,得出毛刺的形成主要由工件终端部材料的大塑性变形而产生,亏缺的形成主要由工件已加工面材料的大塑性变形造成的韧性断裂产生。并通过不同的切削条件模拟,得出了形成亏缺的界限条件。切削实验结果表明:模拟结果中的界限条件与实验结果接近。毛刺、亏缺形成有限元模型的建立为进一步深入研究其形成机理提供了一条有效的途径,其模拟结果为工件棱边质量的控制提供参考。
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出版历程
  • 收稿日期:  2014-04-29
  • 刊出日期:  2016-06-05

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