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Modelling particle kinetic behaviour considering asperity contact: formulation and DEM simulations

机译：考虑粗糙接触的颗粒动力学行为建模：配方和DEM模拟

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摘要

A model of formulating particle kinetic behaviour considering surface asperity is presented. The asperity was created by lining up on the surface a set of particles in varying distances. A moving particle was assigned a velocity to travel on the rugged surface where the particle trajectory and mechanical energy were gauged. The results were used to validate a discrete element framework which was developed and applied to examine the effect of surface asperity on the particle kinetic behaviour. Some interesting case studies were designed and simulated. The simulations suggested that the surface roughness influenced the energy dissipation caused in the particle-surface collisions. The research outcomes defined the inter-particle reaction from a micro-scale perspective and helped predict asperity-induced wear.
机译：提出了考虑表面粗糙度的颗粒动力学行为模型。通过在表面排列一组不同距离的颗粒来产生粗糙。为运动中的粒子分配了在崎surface不平的表面上移动的速度，该表面会测量粒子的轨迹和机械能。结果用于验证离散元素框架，该框架已开发并用于检查表面粗糙对粒子动力学行为的影响。设计并模拟了一些有趣的案例研究。模拟表明，表面粗糙度影响了粒子-表面碰撞所引起的能量耗散。研究结果从微观角度定义了颗粒间的反应，并有助于预测粗糙引起的磨损。

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  • 来源
    《Granular matter》 |2019年第2期|27.1-27.16|共16页
  • 作者

    Wang Can; Deng An; Taheri Abbas; Zhao Honghua; Li Jie;

  • 作者单位

    Univ Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, Australia;

    Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Liaoning, Peoples R China;

    RMIT Univ, Sch Civil & Infrastruct Engn, Melbourne, Vic 3001, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface roughness; Collision; Contact mechanics; Energy dissipation;

    机译：表面粗糙度;碰撞;接触力学;耗能;

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