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Applied Mathematics and Mechanics (English Edition) ›› 1984, Vol. 5 ›› Issue (3): 1297-1307.

• Articles • 上一篇    下一篇

A MODEL FOR SIMULATION OF FRICTION PHENOMENON BETWEEN DIES AND WORKPIECE

罗子健1, 唐才荣1   

  1. 1. Department of Materials Engineering, Northwestern Polytechnical University;
    2. Institute for Metal Forming, Lehigh University, U.S.A.
  • 收稿日期:1983-06-06 出版日期:1984-05-18 发布日期:1984-05-18
  • 通讯作者: Chien Wei-zang
  • 基金资助:

    This is a project of the cooperative program between the Department of Materials Engineering of Northwestern Polytechnical University of the People’s Republic of China and the Institute for Metal Forming at Lehigh University of the United States of America

A MODEL FOR SIMULATION OF FRICTION PHENOMENON BETWEEN DIES AND WORKPIECE

Z.J. Luo1, C.R. Tang1   

  1. 1. Department of Materials Engineering, Northwestern Polytechnical University;
    2. Institute for Metal Forming, Lehigh University, U.S.A.
  • Received:1983-06-06 Online:1984-05-18 Published:1984-05-18
  • Supported by:

    This is a project of the cooperative program between the Department of Materials Engineering of Northwestern Polytechnical University of the People’s Republic of China and the Institute for Metal Forming at Lehigh University of the United States of America

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摘要： Based on the interaction of asperities and upperbound approach a mathematical model for simulation of friction phenomenon between dies and workpiece is proposed. Optimizing the mathematical model with respect to several variables it is found that in addition to adhering, tearing, ploughing, etc., asperities workpiece can move wave-like along the surface layer and under certain circumstances they may disappear. If the asperities wavily move along the surface layer the friction coefficient depends on the geometry of asperities. However, the bonding strength of asperities, has no significant influence on friction coefficient. The depth of the plastic deformation layer is related to the geometry of asperities, too. The soundness of the prerequisite of the proposed model and some analytical results were verified by experiments.

关键词: multilayer, migration-accumulation, Dongying hollow, Huimin hollow, numerical simulation

Abstract: Based on the interaction of asperities and upperbound approach a mathematical model for simulation of friction phenomenon between dies and workpiece is proposed. Optimizing the mathematical model with respect to several variables it is found that in addition to adhering, tearing, ploughing, etc., asperities workpiece can move wave-like along the surface layer and under certain circumstances they may disappear. If the asperities wavily move along the surface layer the friction coefficient depends on the geometry of asperities. However, the bonding strength of asperities, has no significant influence on friction coefficient. The depth of the plastic deformation layer is related to the geometry of asperities, too. The soundness of the prerequisite of the proposed model and some analytical results were verified by experiments.

Key words: multilayer, migration-accumulation, Dongying hollow, Huimin hollow, numerical simulation

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