自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 8    August 2018

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Investigation of modeling on single grit grinding for martensitic stainless steel
NIE Zhen-guo(聂振国)1, 2, 3, WANG Gang(王罡)1, 2, JIANG Feng(姜峰)4,LIN Yong-liang(林永亮)5, RONG Yi-ming(融亦鸣)1, 2, 6

1. State Key Laboratory of Tribology & Institute of Manufacturing Engineering, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2. Beijing Key Laboratory of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China;
3. Mechanical Engineering Department, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
4. College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China;
5. School of Mechanical Electronic and Control Engineering, Beijing Jiaotong University,
Beijing 100044, China;
6. Mechanical and Energy Engineering Department, South University of Science and Technology of China,Shenzhen 518055, China

Abstract:Single grit grinding is the simplified model to abstract the macro scale grinding. Finite element analysis is a strong tool to study the physical fields during a single grit grinding process, compared to experimental research. Based on the dynamic mechanical behavior of 2Cr12Ni4Mo3VNbN steel and the mathematical statistics of abrasive grit, modeling of the single grit grinding process was conducted by using commercial software AdvantEdge. The validation experiment was designed to validate the correctness of the FEA model by contrast with grinding force. The validation result shows that the FEA model can well describe the single grit grinding process. Then the grinding force and multi-physics fields were studied by experimental and simulation results. It was found that both the normal and tangential grinding forces were linearly related to the cutting speed and cutting depth. The maximum temperature is located in the subsurface of the workpiece in front of the grit, while the maximum stress and strain are located under the grit tip. The strain rate can reach as high as about 106 s–1 during the single grit grinding,which is larger than other traditional machining operations.

 

Key words: modeling; single grit grinding; grinding force; multi-physics; martensitic stainless steel

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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