Review article

https://doi.org/10.31803/tg-20180523192812

Taking into Account Material Damping in Seismic Analysis of Structures

Mariia S. Barabash orcid.org/0000-0003-2157-521X ; Department of Computer Technology Building, Institute of Airports, National Aviation University, 1, Kosmonavta Komarova, 03058, Kiev, Ukraine
Bogdan Y. Pisarevskyi orcid.org/0000-0002-1001-2879 ; "LIRA SAPR" Kiev, 04053, Ukraine, 7a Kiyanovsky side street (pereulok)
Yaroslav Bashynskyi orcid.org/0000-0002-0875-8647 ; Department of Computer Technology Building, Institute of Airports, National Aviation University, 1, Kosmonavta Komarova, 03058, Kiev, Ukraine

Abstract

The purpose of this paper is to justify that it is necessary to take into account physical and mechanical properties of soil and different materials of erected structures for damping vibrations in dynamic loads, and to suggest tools for modelling the damping effect (natural or engineering induced) between foundation and soil. A technique is suggested for modelling the behavior of structure in time history analysis taking into account material damping. When solving this problem, the following results were obtained: the physical meaning of material damping was described; Rayleigh damping coefficients were computed through modal damping coefficients. Numerical analysis was carried out for the structure together with soil in earthquake load. Time history analysis was carried out for the problem. Peak values of displacement, speed and acceleration at the roof levels were compared. Analysis results were compared (with and without taking into account material damping). Significant influence of damping on the stress-strain state of the structure has been confirmed.

Keywords

computer modelling; dynamic load; LIRA-SAPR; material damping; numerical modelling; structural damping; time history analysis

Hrčak ID:

235964

URI

https://hrcak.srce.hr/235964

Publication date:

20.3.2020.

Visits: 1.606 *