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Design, fabrication and vibration analysis of a lightweight head expander for a high frequency electrodynamic shaker

  • Hüseyin Dal and Murat Baklacı
Published/Copyright: September 26, 2019
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Abstract

Head expanders provide an important interface connection between the armature of a vibration shaker and test objects. The most important parameters are the mass of the test specimen and the resonance frequency of the head expander. For that reason determining the natural frequency of the head expander is essential. Moreover, the mass of the head expander had to be lightweight. A head expander for an LDS V450 model electrodynamic vibration shaker was designed and manufactured using AZ91D magnesium alloy to be as light and rigid as possible. The natural frequencies, mode shapes and vibration characteristics of the head expander were determined by performing structural, FE modal and harmonic analyses as well as vibration measurements. Additionally, an experimental modal test was performed and the equipment was subjected to a white noise vibration test to verify all the results. Analyses indicated that the head expander manufactured was light, rigid, durable and suitable for vibration tests.


Correspondence Address, Hüseyin Dal, Mechanical Engineering Department, Engineering Faculty, Sakarya University, Sakarya, Turkey, E-mail:

Dr. Hüseyin Dal received his MS and PhD degree in Mechanical Engineering at Sakarya University, Turkey, in 2005 and 2011, respectively. He served as a Research Assistant in the Department of Mechanical Engineering at Sakarya University from 2002 to 20011. He worked as a researcher at Brunel University, UK, in 2012 for one year. Since 2011, he has been at the University of Sakarya, Turkey where he is currently Lecturer and Assistant Professor for Mechanical Engineering. He was awarded a grant by The Scientific and Technological Research Council of Turkey (TUBITAK). His primary research interest is vibration and industrial noise.

Murat Baklacı received his Bachelor's Degree (Second-class Honors) in Mechanical Engineering at Sakarya University, Turkey, in 2017 and began preparing for his Master's Degree at the same university. There, he is currently studying for his Master's thesis on HE design and mechanical vibrations. At the same time he has been working as a Researh Assistant on mechanical vibrations and machine design at National Defence University, Ankara, Turkey, since May 2019.


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Published Online: 2019-09-26
Published in Print: 2019-10-02

© 2019, Carl Hanser Verlag, München

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