期刊文献+

陶瓷材料预应力加工的离散元模拟

下载PDF
导出
摘要 基于离散元法,采用PFC2D软件中的Cluster方法建立陶瓷材料的BPM模型,此模型能描述陶瓷材料的沿晶断裂和穿晶断裂力学行为。采用预应力加工新工艺,对不同预应力条件下SiC陶瓷切削加工时裂纹的扩展过程进行离散元模拟。结果表明:采用离散元法模拟陶瓷材料在加工时裂纹的生成和扩展过程是有效的,并且在一定预应力条件下,预应力的增大能有效抑制加工过程中中位裂纹的扩展深度,缩短横向裂纹的扩展长度。
出处 《科技信息》 2011年第10期124-126,共3页 Science & Technology Information
  • 相关文献

参考文献11

  • 1叶邦彦,彭锐涛,唐新姿,梁忠伟.预应力硬态切削的残余应力及表面形态[J].华南理工大学学报(自然科学版),2008,36(4):6-9. 被引量:14
  • 2彭锐涛,叶邦彦,唐新姿,刘雄伟.预应力硬态切削的热力耦合模型及数值模拟[J].华南理工大学学报(自然科学版),2008,36(4):18-22. 被引量:7
  • 3郭方全.碳化硅陶瓷球的磨削机理研究[D]机械科学研究总院,机械科学研究总院2006.
  • 4Yuanqiang Tan,Dongmin Yang,Y Sheng.Discrete element method (DEM)modeling of fracture and damage in the machining process of poly-crystalline SiC. Journal of the European Ceramic Society . 2008
  • 5Lawn B R,Evans A G,Marshall D B.Elastic/Plastic Indentation Damage in Ceramics: The Median/Radial Crack System. Journal of the American Ceramic Society . 1980
  • 6Malkin S,Ritter JE.Grinding Mechanism and Strength Detradation for Ceramics. Journal of Engineering for Gas Turbines and Power . 1989
  • 7Cundall P A,Strack O D L.A discrete numerical model for graunlar assemblies. Geotechnique . 1979
  • 8Agarwal S,Rao P V.Experimental investigation of surface /subsurface damage formation and material removal mechanisms in SiC grinding. International Journal of Machine Tools & Manufacture . 2008
  • 9Itasca Consulting Group Inc.PFC2D User’s Manuals. . 2004
  • 10Chen L,Labuz J.Normal wedge indentation for rocks by a wedge-shaped toolⅢ:Experimental evidence. International Journal of Rock Mechanics and mine Science . 1998

二级参考文献16

  • 1徐进,叶邦彦.高速车削碳钢工件表面的微观形貌和结构特征[J].华南理工大学学报(自然科学版),2004,32(10):15-19. 被引量:3
  • 2胡华南,周泽华,陈澄洲.预应力加工表面残余应力的理论分析[J].华南理工大学学报(自然科学版),1994,22(2):1-10. 被引量:28
  • 3彭锐涛,叶邦彦,唐新姿,尹美.预应力硬态切削加工中残余应力的数值模拟(英文)[J].科学技术与工程,2007,7(17):4271-4276. 被引量:2
  • 4陈日曜.金属切削原理[M].北京:机械工业出版社,1992.
  • 5Webster G A,Ezeilo N A.Residual stress distribution and their influence on fatigue lifetimes[J].International Journal of Fatigue,2001,2(3):375-383.
  • 6Thiele J D,Melkote S N.Effect of cutting-edge geometry and workpiece hardness on surface residual stresses in finish hard turning of AISI 52100 steel[J].Transactions of ASME,2000,122(11):642-649.
  • 7Fleming M A,Bessom P K.PCBN-performance goals for the 21st century[J].Industrial Diamond Review,2000,60(4):259-268.
  • 8Klamecki B E.Incipient chip formation in metal cutting-a three dimension finite element analysis[D].Urbana:Department of Mechanical and Industrial Engineering,University of Illinois,1973.
  • 9NG E G,Aspinwall D K,Brazil D Monaghan J.Medeling of temperature and forces when orthogonally machining hardened steel[J].International Journal of Machine Tools & Manufacture,1999 (39):885-903.
  • 10Wen Q,Guo Y B,Todd Beth A.An adaptive FEA method to predict surface quality in hard machining[J].Journal of Materials Processing Technology,2006,173(1):21-28.

共引文献16

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部