| 基于流线理论计算正交切削中应变率和应变的方法 |
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| 引用本文： | 毕雪峰,刘永贤,Gautier LIST,刘阳.基于流线理论计算正交切削中应变率和应变的方法[J].东北大学学报(自然科学版),2009,30(8):1185-1188. |
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| 作者姓名： | 毕雪峰 刘永贤 Gautier LIST 刘阳 |
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| 作者单位： | 1. 东北大学,机械工程与自动化学院,辽宁,沈阳,110004
2. LPMM,Université de Metz,Metz 57045 |
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| 基金项目： | 国家重大专项科技支撑计划项目 |
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| 摘 要： | 依据流体力学中的流线理论,选用了一个较为通用的流线模型,对正交金属切削时的塑性变形进行了分析研究.对实验获得的切削中的流线轨迹和流线模型进行拟合,确定了模型中的几何参数.应用流线理论和塑性理论相结合的方法,计算了剪切区的应变率分布,其结果与前人的实验和计算结果基本吻合,说明此流线模型可以用来分析金属切削中的塑性变形.对应变率进行数值积分,得到了剪切区的应变分布.根据计算的应变结果,提出了一种定义剪切区形状的方法.
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| 关 键 词： | 正交切削 塑性变形 流线模型 应变 剪切区形状 |
Calculating Strain Rate and Strain During Orthogonal Cutting in Accordance to Streamline Theory |
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| Bi Xue-feng,LIU Yong-xian,Gautier LIST,LIU Yang.Calculating Strain Rate and Strain During Orthogonal Cutting in Accordance to Streamline Theory[J].Journal of Northeastern University(Natural Science),2009,30(8):1185-1188. |
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| Authors: | Bi Xue-feng LIU Yong-xian Gautier LIST LIU Yang |
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| Institution: | (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China; (2) Laboratoire de Physique et Mécanique des Matériaux, Université de Metz, Metz 57045, France |
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| Abstract: | The plastic deformation of metal during orthogonal cutting was analyzed according to the streamline theory in fluid mechanics,with a general streamline model introduced.The geometrical parameters in this model were determined by fitting the flow lines traced in experiments with the streamline model.Then,the distribution of strain rate in primary shear zone was calculated via combining the streamline analysis with plasticity theory.The results revealed that the distribution thus calculated conforms to the ex... |
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| Keywords: | orthogonal cutting plastic deformation streamline model strain shape of shear zone |
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