Lysytsia M.I., Novikova A.V., Zabolotna O.Yu., Ahaltsov H.M. Substantiation of parameters and experimental studies of vibration isolators of high load capacity

Details

Parent Category: Geo-Technical Mechanics, 2023

Category: Geo-Technical Mechanics, 2023, Issue 166

Geoteh. meh. 2023, 166, 75-83

https://doi.org/10.15407/geotm2023.166.075 

 

SUBSTANTIATION OF PARAMETERS AND EXPERIMENTAL STUDIES OF VIBRATION ISOLATORS OF HIGH LOAD CAPACITY

Lysytsia M.I., Novikova A.V., Zabolotna O.Yu., Ahaltsov H.M.

M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

UDC 678.4.06:621.81

Language: English

Abstract. When designing buildings and structures for operation in seismically hazardous areas, constructions of increased bearing capacity are traditionally used. At present, in Ukraine and abroad, “active seismic protection systems” have been used, which reduce seismic loads on constructions. Most of the systems belong to the means of kinematic vibration isolation. Protection against vibration seismic loading is provided by devices located between the construction (building) and the supporting construction. Vibration isolators of various designs, dampers, dynamic dampers, etc. are used as such devices. As vibration isolators, constructions using elastomeric materials, mainly rubber, are most widely used. The use of elastomeric blocks in the systems of vibration and seismic protection of buildings and structures is characterized by high vertical rigidity, low shear rigidity, high energy dissipation, they have high reliability and the absence of sudden failure. Despite significant advances in the design of elastomeric parts, the simplicity of shapes and extensive experience in their application, constructions with desired physical and mechanical characteristics have not yet been created. In this regard, fairly simple and accurate calculation methods that can be used at the design stage are of great importance. The calculation of thin-layer rubber-metal vibration isolators under static compression is considered. The calculation was performed using the Ritz method for an axisymmetric problem with the assumption that axial displacements do not depend on the radius of an individual element, but are only a function of the axial coordinate. Experimental verification of the results obtained was carried out using rubber-metal vibration isolators with a diameter of 200 mm and a rubber layer height of 5 mm, 10 mm and 20 mm, which were stacked with a rubber mass of 100 mm thick. Comparison of the calculated and experimental data shows that up to the value of the element radius to height ratio equal to ten, the stiffness values practically coincide. For thinner elements, the introduction of an appropriate coefficient is required.
Keywords: rubber-metal vibration isolator, thin-layer element, physically nonlinear medium, compressibility, elastic potential.

 

REFERENCES

1. Bulat, A.F., Kobets, A.S., Dyrda, V.I., Lapin, V.A., Grebenyuk, S.M., Lysytsia, M.I., Marienkov, M.H., Ahaltsov, H.M. and Kalhankov, Ye.V. (2021), “Vibroseismic protection of buildings and structures against natural and technogeneous dynamic impacts”, News of the National Academy of Sciences of the Republic of Kazakhstan. Series of geology and technical sciences, vol. 1, no. 445, pp. 58–65. https://doi.org/10.32014/2021.2518-170X.9

2. Masaru, Kikuchi (2018), “Seismic isolation devices. Principle and application of SI devices, introduction of examples”, International seminar “Technologies of earthquake-resistant construction”, Almaty, Kazakhstan, 17–19 September 2018.

3. Keita, Sakakibara (2021), “Structural design for seismic isolation”, International seminar “Technologies of earthquake-resistant construction”, Bishkek, Kirgizstan, 8–9 February 2021.

4. Bulat, A.F., Kobets, A.S., Dyrda, V.I., Lapin, V.A., Marienkov, M.H., Lysytsia, M.I. and Ahaltsov, H.M. (2019), “Some problems of protecting buildings and structures from the technogenic impact of railway transport”, The Herald of JSC “Kazakh Scientific-Research Institute of Construction and Architecture”, no. 9(97), pp. 6–13.

5. Akira, Wada (2021), “Recent earthquakes and new concepts for earthquake-resistant design”, International seminar “Technologies of earthquake-resistant construction”, Bishkek, Kirgizstan, 8–9 February 2021.

6. Lee, J. and Kelly, J. (2019), “The effect of damping in isolation system on the performance of base-isolated system”, Journal of Rubber Research, no. 22, issue 2, pp. 77–89. https://doi.org/10.1007/s42464-019-00012-z

7. Hisashi, Maesaka (2021), “Seismic repair technology”, International seminar “Technologies of earthquake-resistant construction”, Bishkek, Kirgizstan, 8–9 February 2021.

8. Sadykova, A.B., Silacheva, N.V. and Stepanenko, N.P. (2021), “Seismic micro zoning of the territory of Almaty on a new methodological basis”, News of the National Academy of Sciences of the Republic of Kazakhstan. Series of geology and technical sciences, vol. 1, no. 445, pp. 127–134. https://doi.org/10.32014/2021.2518-170X.18

9. Melkumyan, M.G. (2020), “Base isolation retrofitting design for the existing 9-story large-panel apartment building”, International journal of trend in scientific research and development, vol. 4, issue 4, URL: https://www.ijtsrd.com/papers/ijtsrd30937.pdf.

10. Bulat, A.F., Dyrda, V.I., Lysytsia, M.I. , Ahaltsov, H.M., Lapin, V.A., Kobets, A.S., Nemchenko, V.V., Grebenyuk, S.M. and Novikova, A.V. (2019), “To the calculation of rubber elements of the vibration-seismic insulation system of buildings and structures”, The Herald of JSC “Kazakh Scientific-Research Institute of Construction and Architecture”, no. 4(92), pp. 6–21.

11. Bulat, A.F., Dyrda, V.I., Novikova, A.V., Grebenyuk, S.M., Lapin, V.A. and Marienkov, M.H. (2021), “Calculation of thin-layer rubber-metal elements of machines and buildings considering the compressibility of the material”, Geo-Technical Mechanics, no. 157, pp. 19–28. https://doi.org/10.15407/geotm2021.157.019

 

About the authors:

Lysytsia Mykola Ivanovych, Candidate of Technical Sciences (Ph. D.), Senior Researcher, Head of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Novikova Alina Viacheslavivna, Master of Science, Junior Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Zabolotna Olena Yuriivna, Master of Science, First Category Engineer in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ahaltsov Hennadii Mykolaiovych, Master of Science, Junior Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

• < Prev
• Next >