Next Article in Journal
3D Visualization through the Hologram for the Learning of Area and Volume Concepts
Previous Article in Journal
The Use of the Evenness of Eigenvalues of Similarity Matrices to Test for Predictivity of Ecosystem Classifications
Previous Article in Special Issue
Weighted Block Golub-Kahan-Lanczos Algorithms for Linear Response Eigenvalue Problem
Article Menu

Export Article

Open AccessArticle
Mathematics 2019, 7(3), 246; https://doi.org/10.3390/math7030246

A Theoretical Rigid Body Model of Vibrating Screen for Spring Failure Diagnosis

1
Department of Mechanical Engineering, State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
2
School of Mechanical Electronic & Information Engineering, China University of Mining & Technology-Beijing, Beijing 10083, China
3
Mechanical & Electrical Engineering School, Beijing Information Science & Technology University, Beijing 100192, China
*
Authors to whom correspondence should be addressed.
Received: 7 January 2019 / Revised: 4 March 2019 / Accepted: 5 March 2019 / Published: 9 March 2019
(This article belongs to the Special Issue Mathematics and Engineering)
Full-Text   |   PDF [2276 KB, uploaded 9 March 2019]   |  

Abstract

Springs are critical components in mining vibrating screen elastic supports. However, long-term alternating loads are likely to lead to spring failures, likely resulting in structural damages to the vibrating screen and resulting in a lower separation efficiency. Proper dynamic models provide a basis for spring failure diagnosis. In this paper, a six-degree-of-freedom theoretical rigid body model of a mining vibrating screen is proposed, and a dynamic equation is established in order to explore the dynamic characteristics. Numerical simulations, based on the Newmark-β algorithm, are carried out, and the results indicate that the model proposed is suitable for revealing the dynamic characteristics of the mining vibrating screen. Meanwhile, the mining vibrating screen amplitudes change with the spring failures. Therefore, six types of spring failure are selected for simulations, and the results indicate that the spring failures lead to an amplitude change for the four elastic support points in the x, y, and z directions, where the changes depend on certain spring failures. Hence, the key to spring failure diagnosis lies in obtaining the amplitude change rules, which can reveal particular spring failures. The conclusions provide a theoretical basis for further study and experiments in spring failure diagnosis for a mining vibrating screen. View Full-Text
Keywords: mining vibrating screen; theoretical rigid body model; spring failures diagnosis; amplitudes change mining vibrating screen; theoretical rigid body model; spring failures diagnosis; amplitudes change
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Liu, Y.; Suo, S.; Meng, G.; Shang, D.; Bai, L.; Shi, J. A Theoretical Rigid Body Model of Vibrating Screen for Spring Failure Diagnosis. Mathematics 2019, 7, 246.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Mathematics EISSN 2227-7390 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top