Dynamic analysis of a dashpots equipped vibrating screen using finite element method

• Autorzy: Khoshdast Hamid , Jalilifard Saeid , Khoshdast Hami

Identyfikatory

DOI

10.37190/ppmp/130001

• Języki publikacji: EN

Abstrakty

EN

Even though vibrating screens have been used in mining industries for over a century, their use has often been cited as challenging in terms of understanding its dynamic responses to different operating factors, particularly those that affect the structural aspects. Among the various aspects of screen design, the control of vibrational energies imposed on various parts of the screen is of particular importance because these vibrations directly affect the separation efficiency and useful life of the screen. This study proposes the use of vibration absorbers to control the adverse effects of severe screen vibrations. The dynamic behavior of a medium-sized vibrating screen utilized in the aggregate industry was investigated using the finite element method for both spring/dashpots and conventional solely spring systems. The modeling process was performed in loaded and unloaded conditions and in three frequencies of 15, 23, and 27 rad/s. Numerical simulation results showed that the use of dashpots can significantly reduce the maximum stress in the screen, such that the maximum stress in the center of gravity of the screen at the optimal frequency of 23 decreased from 237 to about 97 MPa. Also, sieve modal analysis showed that the stress in the sieve equipped with the spring/dashpots system had a more uniform distribution. The results revealed that the use of vibration absorbers can be a promising solution to prevent damage caused by high vibrational energies in screens.

Słowa kluczowe

EN

vibrating screen; dashpots; dynamic characteristic; numerical simulation; FEM modeling

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2021
• Tom: Vol. 57, iss. 1
• Strony: 112--126
• Opis fizyczny: Bibliogr. 38 poz., rys., tab.

Twórcy

autor

Khoshdast Hamid

• Higher Education Complex of Zarand

autor

Jalilifard Saeid

• Higher Education Complex of Firoozabad

autor

Khoshdast Hami

• FOCUS® Minerals Engineering Research Center

Bibliografia

• BARAGETTI, S., VILLA, F., 2014. A dynamic optimization theoretical method for heavy loaded vibrating screens, Nonlinear Dyn. 78, 609–627.
• CHANDRAVANSHI, M.L., MUKHOPADHYAY, A.K., 2017. Analysis of variations in vibration behavior of vibratory feeder due to change in stiffness of helical springs using FEM and EMA methods, J. Braz. Soc. Mech. Sci. Eng. 39, 3343–3362.
• CHANDRAVANSHI, M.L., MUKHOPADHYAY, A.K., 2017. Dynamic analysis of vibratory feeder and their effect on feed particle speed on conveying surface, Measurement. 101, 145–156.
• DING, C., SONG, F., SONG, B., Men, X., 2012. The finite element analysis of vibrating screen, Appl. Mech. Mater. 141, 134–138.
• GAO, G.L., 2012. A new single degree-of-freedom resonance device, J. Cent. South Univ. 19, 2782–2787.
• IWATA, Y., KOMATSUZAKI, T., KITAYAMA, S., TAKASAKI, T., 2016. Study on optimal impact damper using collision of vibrators, J. Sound Vib. 361, 66–77.
• JIANG, H., ZHAO, Y., DUAN, C., LIU, C., WU, J., DIAO, H., LV, P. , QIAO, J., 2017. Dynamic characteristics of an equal-thickness screen with a variable amplitude and screening analysis, Powder Technol. 311, 239–246.
• KELLY, E.G., SPOTTISWOOD, D.S., 1982. Introduction to Mineral Processing. John Wiley & Sons Inc., USA.
• LOGAN, D.L. 2011. A First Course in the Finite Element Method. Cengage Learning, USA.
• MICHALCZYK, J., CIEPLOK, G., 2016. Maximal amplitudes of vibrations of the suspended screens during the transient resonance, Arch. Min. Sci. 61, 537–552.
• MICHALCZYK, J., BEDNARSKI, Ł., GAJOWY, M., 2017. Feed material influence on the dynamics of the suspended screen at its steady state operation and transient states, Arch. Min. Sci. 62(1), 145–161.
• PARLAR, J., 2010. Vibration Analysis & Vibrating Screens: Theory & Practice. PhD. Thesis, McMaster University, Hamilton, Ontario.
• PENG, L., FANG, R., FENG, H., ZHANG, L., MA, W., HE, X., 2018. A more accurate dynamic model for dual-side excitation large vibrating screens, J. Vibroeng. 20, 858–871.
• PENG, L., JIANG, H., CHEN, X., LIU, D., FENG, H., ZHANG, L., ZHAO, Y., LIU, C., 2019. A review on the advanced design techniques and methods of vibrating screen for coal preparation, Powder Technol. 347, 136–147.
• PENG, L.P., LIU, C.S., 2015. Stiffness identification of four-point-elastic-support rigid plate, J. Cent. South Univ. 22, 159–167.
• PENG, L.P., LIU, C.S., LI, J., WANG, H., 2014. Static-deformation based fault diagnosis for damping spring of large vibrating screen, J. Cent. South Univ. 21, 1313–1321.
• RAMATSETSE, B.I., MATSEBE, O., MPOFU, K., DESAI, D.A., 2013. Conceptual design framework for developing a reconfigurable vibrating screen for small and medium mining enterprises, SAIIE25 Proceedings, Stellenbosch, South Africa.
• RAMATSETSE, B., MPOFU, K., MAKINDE, O., 2017. Failure and sensitivity analysis of a reconfigurable vibrating screen using finite element analysis, Case Stud. Eng. Fail. Anal. 9, 40–51.
• RAMATSETSE, B., MPOFU, K., MAKINDE, O.A., 2019. Analysis and performance investigation of a reconfigurable vibrating screen machine for mining and mineral processing industries, Procedia CIRP 84, 936–941.
• RODRIGUEZ, C.G., MONCADA, M.A., DUFEU, E.E., RAZETO, M.I., 2016. Nonlinear model of vibrating screen to determine permissible spring deterioration for proper separation, Shock. Vib., 1–7.
• ROTICH, N., TUUNILA, R., ELKAMEL, A., LOUHI-KULTANEN, M., 2017. Dynamic and perturbative system analysis of granular material in a vibrating screen, Adv. Powder Technol. 78, 3257–3264.
• SHIRAZI, A.R., 2019. Optimization of secondary screens at the Gohar Zamin Iron Ore Complex, Technical Report, Sirjan, Iran.
• SLEPYAN, L.I., SLEPYAN, V.I., 2014. Coupled mode parametric resonance in a vibrating screen model, Mechanical Syst. Signal Process. 43, 295–304.
• SOLDINGER, M., 1999. Interrelation of stratification and passage in the screening process, Miner. Eng. 12, 497–516.
• SOLDINGER, M., 2002. Transport velocity of a crushed rock material bed on a screen, Miner. Eng. 15, 7–17.
• SONG, B., SONG, F.Z., DING, C.G., 2013. Vibration sensitivity analysis of the secondary isolation support, Appl. Mech. Mater. 278–280, 18–22.
• VERGNANO, A., BERSELLI, G., PELLICCIARI, M., 2017. Parametric virtual concepts in the early design of mechanical systems: a case study application, Int. J. Interact. Des. Manuf. 11, 331–340.
• WANG, L., DING, Z., MENG, S., ZHAO, H., SONG. H., 2017. Kinematics and dynamics of a particle on a non-simple harmonic vibrating screen, Particuology. 32, 167–177.
• WANG, G., TONG, X., 2011. Screening efficiency and screen length of a linear vibrating screen using DEM 3D simulation, Min. Sci. Technol. 21, 451–455.
• WILLS, B.A., NAPIER-MUNN, T.J., 2007. Wills' Mineral Processing Technology. 7th ed., Elsevier, England.
• XIONG, X., NIU, L., GU, C., WANG, Y., 2017. Vibration characteristics of an inclined flip-flow screen panel in banana flip-flow screens, J. Sound Vib. 411, 108–128.
• YANTEK, D.S., LOWE, M.J., 2011. Analysis of a mechanism suspension to reduce noise from horizontal vibrating screens, Noise Control Eng. J. 59, 568–580.
• ZHANG, X., WEN, B., ZHAO, C., 2017. Vibratory synchronization transmission of a cylindrical roller in a vibrating mechanical system excited by two exciters, Mech. Syst. Signal Process. 96, 88–103.
• ZHANG, Z., 2016. Strain modal analysis and fatigue residual life prediction of vibrating screen beam, J. Measur. Eng. 4, 217–223.
• ZHAO, Y., LIU, C., HE, X., ZANG, C., WANG, Y., REN, Z., 2009. Dynamic design theory and application of large vibrating screen, Procedia Earth Planet. Sci. 1(1), 776–784.
• ZHAO, L., ZHAO, Y., LIU, C., LI, J., DONG, H., 2011. Simulation of the screening process on a circularly vibrating screen using 3D-DEM, Min. Sci. Technol. 21(5), 677–680.
• ZHOU, Z., HUANG, L., JIANG, H., WEN, P., ZHAO, L., ZHAO, Y., DUAN, C., LUO, Z., WANG, Z., LIU, C., ZIMING, W., 2019. Kinematics of elastic screen surface and elimination mechanism of plugging during dry deep screening of moist coal, Powder Technol. 346, 452–461.
• ZHU, H., GE, S., YU, X., 2004. A novel low-noise vibrating screen, Coal Prep. 24, 85–96.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).