Abstract
A feasible method to improve the reliability and processing efficiency of large vibrating screen via the application of an elastic screen surface with multiple attached substructures (ESSMAS) was proposed. In the ESSMAS, every screen rod, with ends embedded into elastomer, is coupled to the main screen structure in a relatively flexible manner. The theoretical analysis was conducted, which consists of establishing dynamic model promoted from the fuzzy structure theory as well as calculating for the equivalent stiffness of each attached structure. According to the numerical simulation using the NEWMARK-β integration method, this assembling pattern significantly leads to the screen surface/rod having larger vibration intensity than that of the corresponding position on screen structure, which specifically, with an averaged acceleration amplitude increasing ratio of 11.37% in theoretical analysis and 20.27% in experimental test. The experimental results, within a tolerant error, also confirm the established model and demonstrate the feasibility of ESSMAS.
Similar content being viewed by others
References
STEYN J. Fatigue failure of deck support beams on a vibrating screen [J]. International Journal of Pressure Vessels and Piping, 1995, 61: 315–327.
ZHAO Yue-ming, LIU Chu-sheng, HE Xiao-mei. Dynamic design theory and application of large vibrating screen [J]. Procedia Earth and Planetary Science, 2009 (1): 776–784.
WODZIŃSKI P. Screens-classification and systematics single-plane screens [J]. Physicochemical Problems of Mineral Processing, 2007, 41: 237–249.
LIU Chu-sheng, ZHAO Yue-ming, He Xiao-mei, ZHANG Cheng-yong, WANG Yi-bin, REN Zi-ting. Design and experiments of elastic screen deck with two degrees of freedom [J]. Journal of China Coal Society, 2004, 29(3): 364–366. (in Chinese)
PENG Li-ping, LIU Chu-sheng. Dynamic modeling and natural frequency analysis of 3-DOF vibration screen[J]. Journal of Mechanical Design, 2011, 28(8): 50–53. (in Chinese)
GINSBERG Jerry H. Mechanical and structural vibration: Theory and application [M]. BAI Hua-Tong, LI Bao-Jun. Beijing: China Astronautic Publishing House, 2005: 242–245.
MEBCIK J M, BERRY A. A theoretical formulation of the dynamical response of a master structure coupled with elastic continuous fuzzy subsystems with discrete attachments [J]. Journal of Sound and Vibration, 2005, 280(3/4/5): 1031–1050.
SOIZE C. Vibration damping in low-frequency range due to structural complexity: A model based on the theory of fuzzy structures and model parameters estimation [J]. Computers & Structure, 1995, 58(5): 901–915.
SOIZE C. Estimation of the fuzzy structure model parameters using the mean power equation of the fuzzy structure [J]. Journal of Vibration and Acoustics, 1998, 120(1): 279–286.
WEAVER R L. The effect of an undamped finite degrees of freedom ‘fuzzy’ substructure: numerical solution and theoretical discussion [J]. Journal of Acoustical Society of America, 1996, 99(1): 3159–3164.
STRASBERG M, FEIT D. Vibration damping of large structure induced by attached small resonant structure [J]. Journal of Acoustical Society of America, 1996, 99(1): 335–344.
DREXEL M V, GINSBERG J H. Modal overlap and dissipation effects of a cantilever beam with multiple attached oscillators [J]. Journal of Vibration and Acoustics, 2001, 123(2): 181–187.
SLIVA C W D. Vibration: Fundamentals and practices [M]. CRC Pre, 1999. Appendix C.
LAW S S, YONG D, Substructure methods for structural condition assessment [J]. Journal of Sound and Vibration, 2011, 330(15): 3606–3619.
Machinery’s Handbook (software edition2008) [EB/OL]. [2008-08-01]. http://www.minfre.com.
WANG Bor-tsuen, CHENG Deng-kai. Modal analysis by free vibration response only for discrete and continuous systems [J]. Journal of Sound and Vibration, 2011, 330(16): 3913–3929.
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Projects(50574091, 50774084) supported by the National Natural Science Foundation of China
Rights and permissions
About this article
Cite this article
Wang, H., Liu, Cs., Peng, Lp. et al. Dynamic analysis of elastic screen surface with multiple attached substructures and experimental validation. J. Cent. South Univ. 19, 2910–2917 (2012). https://doi.org/10.1007/s11771-012-1358-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-012-1358-x