| 基于PFC3D的半固着磨具剪切实验数值模拟分析 |
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| 引用本文： | 马 新,邓乾发,袁巨龙.基于PFC3D的半固着磨具剪切实验数值模拟分析[J].华南农业大学学报(社会科学版),2011,29(4). |
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| 作者姓名： | 马 新 邓乾发 袁巨龙 |
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| 作者单位： | １．浙江工业大学特种装备制造与先进加工技术教育部重点实验室； ２．湖南大学国家高效磨削工程技术研究中心 |
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| 摘 要： | 在以往有关半固着磨具模型试验和二维数值模拟的研究基础上，利用离散单元法中的三维颗粒流方法（PFC3D）建立半固着磨具三维颗粒流模型。以半固着磨具压缩比实验和虚拟压缩比试验曲线吻合作为PFC微观特性参数选取准则。通过半固着磨具虚拟剪切实验，得到各级平行连接切向刚度下剪应力与水平剪切位移关系和抗剪强度，进一步验证半固着磨具三维颗粒流模型建立的合理性。
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| 关 键 词： | 半固着磨具 剪切实验 颗粒流方法 |
Simulative Analysis of the Shearing Experimental Data of Semi-Fixed Abrasive Tool Based on PFC3D |
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| MA Xin,DENG Qian-f,YUAN Ju-long.Simulative Analysis of the Shearing Experimental Data of Semi-Fixed Abrasive Tool Based on PFC3D[J].Journal of South China Agricultural University:Social Science Edition,2011,29(4). |
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| Authors: | MA Xin DENG Qian-f YUAN Ju-long |
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| Abstract: | Based on the study on semi-fixed abrasive tool model test and simulation of two-dimensional data, the paper built up three-dimensional discrete element modle of semi-fixed abrasive tool (SFAT) with PFB3D (Particle Flow Code in 3 Dimensions). Taking the matching curve line of SFAT compression ratio experiment and virtual one as the selection standard for PFC micro specific parameters. Through SFAT virtual shearing experiments, the relation between the shear stress and the horizontal shear displacement under different parallel bond tangent stiffness were obtained. The rationality of three-dimensional discrete element model of SFAT was further testified. |
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| Keywords: | metal processing semi-fixed abrasive plate shearing experimental discrete element method |
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