Passive and semi-active bracing systems for seismic protection: a comparative study
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2015, Vol 12, Issue 1
Abstract
This paper analyses comparatively the seismic response of structures equipped by two types of dissipative bracing systems: passive devices with variable friction and semi-active devices with magnetoreological fluids. Both passive and semi-active seismic devices have hysteresis forcedisplacement characteristics with “butterfly” shape, controlled by the instantaneous inter-story drift. This type of hysteresis behavior can be achieved by appropriate design of passive friction coupling and semiactive control strategy implemented for magnetorheological dampers. The forces developed by both protection devices are calibrated such as to dissipate the same amount of energy per hysteresis loop for imposed cyclic motion The efficiency of passive and semi-active protection systems, installed in a shear frame structure, is assessed by numerical analysis for Vrancea 1977 earthquake.
Authors and Affiliations
Ana MITU, Tudor SIRETEANU, Gheorghe GHITA
Keywords
Related Articles
- EP ID EP148669
- DOI -
- Views 74
- Downloads 0
Methods of Simulation for Dynamic Systems with Friction
In this paper the contact/impact between two bodies is accentuated by simulations using the ANSYS code. In the present study has been selected the ANSYS/LS-DYNA code because it is used in the simulation of contact/impact...
On Nonlinear Computational Assessments of Passive Elastomeric Elements for Vibration Isolation
The area of this study has framed by the passive isolation of the sensitive embedded systems against shocks and vibration due to various technological equipments. This work deals with computational behavior and nonlinear...
Vibration experimental determination of internal combustion engines, using its data acquisition and virtual instruments
AThis paper presents a method for measuring the vibration occurring at internal combustion engines cars, depending on octane of used fuel. Heat engines have been tested on the booth using sensors and transducers connecte...
Study of the Behavior of a Multi Floors Building in the Case of an Earthquake Using a Piece-wise Model
This paper realizes a study for the dynamics of a multi floors building excited by a vertical earthquake type excitation. Each floor is considered connected to its neighbors by piece-wise springs and dampers. The numeric...
Diminution Noise and Vibration for Industrial Equipments Designated to Gearbox Testing
The paper refers to a complex algorithm of design test stands for gearboxes. The algorithm pursues the optimization of the complex assembly embodied by the stand. The optimization criteria point to minimizing power suppl...