Oscillations Specific for the Homogeneous Rod like Elastic Structure on the Kinematic Absorber Basis with Rolling Bearers Having Straightened Surfaces
In modern structural schemes, it is impossible to increase seismic stability by increasing the cross section, strength, and weight only. The structure may be more robust, but not necessarily cost-effective, so that both the weight and the inertial seismic load can increase even more. New effective seismic protection methods are required.
This paper addresses the vibrational motion of a homogeneous rod like elastic structure based on vibratory bearings bounded with high-order rotation surfaces, taking into account rolling friction on relaxing grounds with a horizontal base displacement. We have derived the system motion equations. The work included studied stationary modes of the oscillatory process under harmonic disturbance. We determined the stability criteria for the system oscillatory motion.
It was established that the vibratory bearing bounded by high-order rotation surfaces ensures reduced mechanical energy received by the structure from the base through tuning the structure oscillation frequencies from the prevailing impact frequencies.
KeywordsVibroprotection Seismic protection Rolling bearer Protection against vibration Rolling-contact bearing Non-linear vibrations Elastic structure
- 2.Parducci, A.: Application of seismic isolation and passive energy dissipation to Italian bridges, Isolation, energy dissipation and control of vibrations of structures. In: Proceedings of the International Post-SMiRT Conference Seminar Capri (Napoli), Italy, 23–25 August 1993, pp. 57–69 (1993)Google Scholar
- 3.Massa, G., Pagano, S., Rocca, E., Strano, S.: Sensitive equipments on WRS-BTU isolators Meccanica 48, 1777–1790 (2013)Google Scholar
- 4.Brancati, R., Massa, G., Pagano, S., Rocca, E., Strano, S.: Experimental investigation of the performances of a WRS-BTU seismic isolator (Conference Paper). In: Lecture Notes in Engineering and Computer Science. LNECS 2013, vol. 3, pp. 1646–1651 (2013). World Congress on Engineering, WCE 2013, London, United Kingdom, 3 July 2013 through 5 July 2013, Code 100983Google Scholar
- 5.Cherepinskiy, D.: The seismic isolation of residential buildings, Research of seismic stability of buildings and structures, Alma-Ata, pp. 438–462 (2015)Google Scholar
- 6.Kurzanov, A.V., Akhmedov, A.M.: Full-scale research of a three-story fragment and five-storey building on seismic isolation, Express information from VNIIIS. Series 14. Antiseismic construction, Issue 2–3, p. 24 (1994)Google Scholar
- 8.Bissembayev, K., Omyrzhanova, Zh.: Friction arising from rolling of a bearing with straightened surfaces on a relaxing ground. In: Proceedings of 22nd International Conference “MECHANIKA 2017”, Kaunas University of Technology, Lithuania, pp. 52–57 (2017)Google Scholar