Modelling the Stiffness Element in the Multi-Degree of Freedom Mass-Spring System

Structural dynamics in structural engineering analysis involves the modal parameters (natural frequency, mode shape and damping ratio). The modal parameters of engineering structures is mainly influenced by the damping and stiffness properties. This research paper presents the reliability of CELAS e...

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Published inApplied Mechanics and Materials Vol. 899; pp. 3 - 10
Main Authors Bahari, Abdul Rahim, Rani, Muhamad Norhisham Abdul, Yunus, Mohd Azmi, Wan Iskandar Mirza, Wan Imaan Izhan, Shah, Mohd Azam Shah Aziz
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.06.2020
Subjects
Accelerometers
Bridges
Cables
Damping ratio
Degrees of freedom
Dynamic structural analysis
Finite element method
Investigations
Mass-spring systems
Mathematical models
Mechanical engineering
Modelling
Parameters
Resonant frequencies
Scientific papers
Stiffness
Structural engineering
Vibration
Spring-Mass System
Spring Stiffness
Experimental Modal Analysis
CELAS
Finite Element
Online AccessGet full text
ISBN9783035716825
303571682X
ISSN1660-9336
1662-7482
1662-7482
DOI10.4028/www.scientific.net/AMM.899.3

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Abstract Structural dynamics in structural engineering analysis involves the modal parameters (natural frequency, mode shape and damping ratio). The modal parameters of engineering structures is mainly influenced by the damping and stiffness properties. This research paper presents the reliability of CELAS element in the finite element modelling to represent the stiffness parameter. The simplified engineering structure considered in this study is a mass-spring system with multi-degree of freedom. Experimental modal testing is performed using an electro-magnetic vibration shaker as an exciter and an accelerometer to record the natural frequency of the system. HyperMesh normal mode analysis is used to compute the natural frequency of the mass-spring system. The comparative evaluation is performed in order to identify the accuracy of the natural frequencies obtained from the modelling analysis and the measured counterparts. Consequently, it is found that the element CELAS has a good capability to represent as the stiffness parameter in the finite element modelling.
AbstractList Structural dynamics in structural engineering analysis involves the modal parameters (natural frequency, mode shape and damping ratio). The modal parameters of engineering structures is mainly influenced by the damping and stiffness properties. This research paper presents the reliability of CELAS element in the finite element modelling to represent the stiffness parameter. The simplified engineering structure considered in this study is a mass-spring system with multi-degree of freedom. Experimental modal testing is performed using an electro-magnetic vibration shaker as an exciter and an accelerometer to record the natural frequency of the system. HyperMesh normal mode analysis is used to compute the natural frequency of the mass-spring system. The comparative evaluation is performed in order to identify the accuracy of the natural frequencies obtained from the modelling analysis and the measured counterparts. Consequently, it is found that the element CELAS has a good capability to represent as the stiffness parameter in the finite element modelling.
Author Shah, Mohd Azam Shah Aziz
Bahari, Abdul Rahim
Yunus, Mohd Azmi
Wan Iskandar Mirza, Wan Imaan Izhan
Rani, Muhamad Norhisham Abdul
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  surname: Bahari
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  surname: Rani
  fullname: Rani, Muhamad Norhisham Abdul
  email: mnarani@uitm.edu.my
  organization: Universiti Teknologi MARA : Structural Dynamics Analysis & Validation (SDAV), Faculty of Mechanical Engineering
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  surname: Wan Iskandar Mirza
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10.1177/0954411911424210
10.1051/matecconf/20179001025
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10.1061/(asce)em.1943-7889.0001008
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Keywords Spring-Mass System
Spring Stiffness
Experimental Modal Analysis
CELAS
Finite Element
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SubjectTerms Accelerometers
Bridges
Cables
Damping ratio
Degrees of freedom
Dynamic structural analysis
Finite element method
Investigations
Mass-spring systems
Mathematical models
Mechanical engineering
Modelling
Parameters
Resonant frequencies
Scientific papers
Stiffness
Structural engineering
Vibration
Title Modelling the Stiffness Element in the Multi-Degree of Freedom Mass-Spring System
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