Numerical simulation of the behaviour of a two level structure subjected to transient seismic arbitrary loads

Authors

  • Cristian Rugina Institute of Solid Mechanics of the Romanian Academy
  • Dan Dumitriu Institute of Solid Mechanics of the Romanian Academy
  • Veturia Chiroiu Institute of Solid Mechanics of the Romanian Academy
  • Iulian Girip Institute of Solid Mechanics of the Romanian Academy
  • Valerica Mosnegutu Institute of Solid Mechanics of the Romanian Academy

Keywords:

seismic loads, earthquake engineering

Abstract

Numerical 3D finite element method (FEM) of a 2 level frame structure subjected, at the base, to transient arbitray seismic loads is presented in this study. The structural model consists of 2 level structure with constant height of 350 mm and the width of each plate 300 mm. The plates are made out of plexiglass plates to create a rigid plan system and the columns are circular hollow brass rods of diameter 4.00 mm and thickness of  0.40 mm. Free vibration 3D simulation tests are performed in order to investigate the damping properties behavior of the structure. The FEM simulations determines the fields of displacement and normal modes. In order to determine the damping of the structure, especialy the damping of the brass rods, comparisons between experimental and computed free vibration of the structure were done.

References

RUGINA, C., DRAGNE, C., GIRIP, I., BALDOVIN, D., MAJERCSIK, L., Numerical and experimental investigations of the behaviour of a frame equipped with niti wires. part 1. the case of absence of niti wires, Romanian Journal of Mechanics, 4, 1, pp 3-15, ISSN 2537-5229, 2019.

RUGINA, C., MUNTEANU, L., MAJERCSIK, L., DRAGNE, C., Numerical and experimental investigations of the behaviour of a frame equipped with niti wires. part 2. the case of absence of niti wires, Romanian Journal of Mechanics , 5, 1, pp 15-30, ISSN 2537 - 5229, 2020.

Structural Mechanics Module, User’s Guide, Comsol 5.6.

DUMITRIU, D., BALDOVIN, D., LALA, C., Simple method of identification of the two integration constants for the numerical double integration of acceleration, ANNALS of Faculty Engineering Hunedoara - International Journal of Engineering, Tome XIV [2016] – Fascicule 3, pp. 169-173, ISSN: 1584-2665, 2016.

SeismoSignal software help.

https://en.wikipedia.org/wiki/Damping.

Published

2021-12-29

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