Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Calibration of damping coefficient in discrete element method simulation

Zhong Wen-Zhen Zhou Zhao-Yao Xia Wei Li Yuan-Yuan He Ke-Jing

Calibration of damping coefficient in discrete element method simulation

Zhong Wen-Zhen, Zhou Zhao-Yao, Xia Wei, Li Yuan-Yuan, He Ke-Jing
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  2880
  • PDF Downloads:  1816
  • Cited By: 0
Publishing process
  • Received Date:  22 September 2008
  • Accepted Date:  25 November 2008
  • Published Online:  05 April 2009

Calibration of damping coefficient in discrete element method simulation

  • 1. (1)华南理工大学机械与汽车工程学院,广州 510641; (2)华南理工大学计算机科学与工程学院,广州 510641

Abstract: In the discrete element method, the damping coefficient, which is a key parameter for rational simulation, is uncertain and often chosen based on researchers experience. To make the physical model reflect the reality better, in this paper acoustic technology is used to calibrate the damping coefficient. Oscillogram of the acoustic wave generated by the collisions is analyzed and the calibrated damping coefficient is obtained to be 0.5. The calibrated parameters are used to simulate the random packing process of 2000 monosize spherical particles. The final packing density is 0.625, which is in accordance with the classic measurements quite well. Besides the obtained correct damping coefficient, in this paper both the usefulness of the physical model and the practicability of acoustic technology for detecting the collision time are also demonstrated precisely.

Catalog

    /

    返回文章
    返回