E3S Web Conf.
Volume 168, 2020II International Conference Essays of Mining Science and Practice
|Number of page(s)||12|
|Published online||06 May 2020|
Present problems of vibration isolation in heavy mining machines at long-term cyclic loads
Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, 49005, Dnipro, Simferopolska Str., 2a, Ukraine
2 Dnipro State Agrarian and Economic University, 49600, Dnipro, Serhiia Yefremova Str., 25, Ukraine
3 Prydniprovsky Scientific Center of National Academy of Sciences of Ukraine and of Ministry of Education and Science of Ukraine, 49600, Dnipro, Leshko-Popelia Str., 15, Ukraine
4 State Agrarian and Engineering University in Podilya, 32300, Kamianets-Podilskyi, Khmelnytskyi region, Schevchenko Str., 13, Ukraine
5 Kazakh Research and Design Institute of Construction and Architecture, 050036, Almaty, 3rd microdistrict, 45/1, Kazakhstan
* Corresponding author: email@example.com
On the basis of the developed simulation model and the Boltzmann-Volterra integral relations with kernels of relaxation and aftereffect, an equation was worked out, which made it possible to take into account the rubber viscoelastic properties in full volume; in this equation, stiffness operator of elastic suspension in the machine is written by using fractional exponential function of the Yu. Rabotnov’s type; on the basis of the mathematical model, the basic parameters of the machine under the study were calculated; in particular, for the vortex mixer, the time dependences of amplitude of the mixer housing vibrations and coefficient of vibration isolation efficiency were calculated with taking into account aging of elastic link material in the machines; the calculation results were compared with the results of industrial tests of the vortex mixer operation lasting for 16 years. The theory and method for calculating vibration isolation systems with rubber elastic links for heavy mining machines were developed with taking into account material structure changes due to the effects of aging.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.