Determination of natural frequency and mode shape for hollow thin plates

Mohamad Syafiq Bin Che Musa, Mohd Faizal Mat Tahir, Mohd Rasidi Mohd Rasani, Meor Iqram Meor Ahmad

Research output: Contribution to journalArticle

Abstract

The determination of natural frequency and the mode shape of structures are important in characterizing the properties or behavior of the structures. The existing hollow in solid thin plate will change the vibration behavior in term of resonance frequency and mode behavior. A lot of structure consists of hollow space such as inner panel of car hood and bonnet. However, simplifying the model from hollow structure with solid thin plates only will resulting some difference in their vibration performance. This study begins with conducting modal analysis experiment using solid thin plate under free-free boundary condition. Next, the finite element methods were performing to compare with the experimental results. The average error of 3.96% was obtain when compared which provide a good confident level with the simulation result. Next, the study continued by finding the natural frequency and the mode shape for the thin plate under various position of hole, number of holes and shape of hole by using FEM software. Finally, finite element was also being carried out on the simplified design model of the inner panel car hood based from the real product and compared the resonance frequency from the model with some vibration reference sources. Through this study, it is found that the diversity of the hole position, the increasing number of holes and the change of the hole shape play a role in changing the natural frequencies of a thin plate. Since there is a lot of hollow thin plates in the car part, designing every parts are important to make sure the NVH quality is improve and not opposite of it.

Original languageEnglish
Pages (from-to)2601-2606
Number of pages6
JournalInternational Journal of Innovative Technology and Exploring Engineering
Volume9
Issue number1
DOIs
Publication statusPublished - Nov 2019

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Natural frequencies
Railroad cars
Vibrations (mechanical)
Finite element method
Modal analysis
Boundary conditions
Experiments

Keywords

  • Finite element method
  • Modal Analysis
  • Mode shape
  • Natural frequency

ASJC Scopus subject areas

  • Computer Science(all)
  • Civil and Structural Engineering
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

Determination of natural frequency and mode shape for hollow thin plates. / Musa, Mohamad Syafiq Bin Che; Tahir, Mohd Faizal Mat; Rasani, Mohd Rasidi Mohd; Ahmad, Meor Iqram Meor.

In: International Journal of Innovative Technology and Exploring Engineering, Vol. 9, No. 1, 11.2019, p. 2601-2606.

Research output: Contribution to journalArticle

Musa, Mohamad Syafiq Bin Che ; Tahir, Mohd Faizal Mat ; Rasani, Mohd Rasidi Mohd ; Ahmad, Meor Iqram Meor. / Determination of natural frequency and mode shape for hollow thin plates. In: International Journal of Innovative Technology and Exploring Engineering. 2019 ; Vol. 9, No. 1. pp. 2601-2606.
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