[1] Li Guangbu,. Study on conveyor non-linear dynamicsand its effect on dynamic behavior [J]. Journal of Southeast University (English Edition), 2004, 20 (1): 70-74. [doi:10.3969/j.issn.1003-7985.2004.01.015]
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Study on conveyor non-linear dynamicsand its effect on dynamic behavior(
)
输送机非线性动力学的研究 及其对动态性能的影响
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 20
- Issue:
- 2004 1
- Page:
- 70-74
- Research Field:
- Mechanical Engineering
- Publishing date:
- 2004-03-30
Info
- Title:
- Study on conveyor non-linear dynamicsand its effect on dynamic behavior
- 输送机非线性动力学的研究 及其对动态性能的影响
- Author(s):
- Li Guangbu
- Department of Mechanical and Electric Engineering, Shanghai Teachers University, Shanghai 201400, China
- 李光布
- 上海师范大学机电学院, 上海 201400
- PACS:
- TH113;O322
- DOI:
- 10.3969/j.issn.1003-7985.2004.01.015
- Abstract:
- A conveyor linear system assumption is based on an approximate description of belt mechanics behavior and constant elastic module. It produces analysis errors and improper dynamics simulation in large conveyors. The belt non-linear characteristics based on sag are described and the belt equivalent elastic module expression is deduced. The relationship between belt-equivalent elastic module and elastic module is studied, and their ratio varies from 0.1 to 1.0. The non-linear motion equation with a lumped element model is put forward. Its increment equation and numerical solution are built. A dynamics simulation on a conveyor is carried out, mainly to calculate and compare belt speed, acceleration, tension, displacement of gravity take-up and wave period with linear and non-linear models. It shows that the simulation errors between two models vary from 6% to 50%.
- 输送机线性系统的假设是在胶带力学特性和弹性模量不变的情况下近似提出的.这种假设会使大型输送机产生理论误差和不正确的动力学仿真结果.本文分析了基于胶带悬垂度的非线性特性, 推导了等效弹性模量的表达式, 研究了胶带等效弹性模量和弹性模量之间的关系, 并发现两者的比值在0.1~1.0之间变化.提出了输送机有限单元模型的非线性运动方程及其增量方程和数值解法.通过对一输送机动态特性的仿真分析, 发现用线性和非线性2种模型, 它们动态参数(如带速, 胶带加速度, 张力以及重锤位移和张力波速)的计算误差介于6%~50% 之间.
References:
[1] Kahrger R, Dilefeld M, Pohl M. Henderson 2000-A world class conveying system [J]. Bulk Solids Handling, 2000, 20(3): 319-321.
[2] Pritchard S M, Hesterman D C. Elastic dynamics in an overland belt conveyor modeled by receptances [J]. Bulk Solids Handling, 2000, 20(4): 451-457.
[3] Stampfl Hans R. Modern drive technology for belt conveyor [J]. Bulk Solids Handling, 2001, 21(4): 438-441.
[4] Lodewijiks G. Design of high speed belt conveyors [J]. Bulk Solids Handling, 1999, 19(4): 463-470.
[5] Lodewijks G. Non-linear dynamics of belt conveyor systems [J]. Bulk Solids Handling, 1997, 17(1): 57-64.
[6] Li Guangbu. Dynamics and design of belt conveyor [M]. Beijing: Mechanical Industry Publishing House, 1998.(in Chinese)
[7] Samanta A. Tensioned-induced conveyor belts: a finite element free vibration study [J]. Journal of Vibration and Control, 1998, 42(4): 673-696.
[8] Funke H, Hartmann K, Lauhoff H. Design and operating performance of a long-distance belt conveyor system with horizontal curves and simultaneous material transport in the upper and lower strands [J]. Bulk Solids Handling, 2000, 20(1): 45-55.
Memo
- Memo:
- Biography: Li Guangbu(1962—), male, doctor, professor, li_guangbu@hotmail.com.