Vibration Analysis of Multi-Story Structures
Date
2021-03-30
Authors
Anam, S.M. Nazrul
Fahim, Abid Md.
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Mechanical and Production Engineering (MPE),Islamic University of Technology(IUT), Board Bazar, Gazipur, Bangladesh
Abstract
To determine the dynamic characteristics and properties of an object, Modal analysis, and
Harmonic response analysis both are quite essential tools. Natural frequency is a significant
dynamic parameter as every structure in the world vibrates with a high amount of amplitude at its
natural frequency. For improving a structure’s strength, reliability, and durability at its design
stage or pre-production stage at variable operating conditions we need to know and determine the
modal parameters of an object. Those modal parameters are natural frequency, mode shape, and
damping characteristics. By determining those parameters, we will be able to know the actual
structural and dynamic properties of an object. In this paper, we work with a two-story and threestory
structure by giving different force conditions and boundary conditions. The paper clarifies
the dynamic and structural behavior of the two-story and three-story structures by performing
Modal analysis and harmonic response analysis with the assist of FEM (Finite Element Method).
The analysis is completely based on the simulation process. No experimental analysis has not
conducted due to some circumstances. By determining as well as observing the dynamic
characteristics of the two stored and three stored structures we have been able to relate and
predict the properties of those structure’s behavior during an earthquake consequence. We have
been able to find that out by giving a base structure at the downward side of those structures as
well as giving some horizontal forces to that base structure. Along with all of these analyses, we
have shown a generic comparison among the structures at different operating conditions by
giving different kinds of masses at different locations of the structures.
Description
Supervised by
Dr. Md. Zahid Hossain,
Professor,
Department of Mechanical and Production Engineering(MPE),
Islamic University of Technology (IUT)
Board Bazar, Gazipur-1704, Bangladesh.
Keywords
Dynamic characteristics, Natural frequency,Amplitude,Modal parameters
Citation
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