This paper studies optimal designs for vibrating structures using a moving isosurface threshold method (MIST). In the present study, a combination of strain and kinetic energy densities is selected as a response function of natural frequency and then formulations to maximize a specific frequency, frequency separation, and average-mean are derived. An efficient algorithm is developed to find a moving isosurface threshold level for evolving the design boundary and updating the weighting factor. The present algorithm coupled with commercial finite element analysis (FEA) software is used to study optimal designs for vibrating structures. The obtained optimal designs are fabricated and the experimental tests are conducted to validate the optimal topologies.
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December 2015
Research-Article
Optimal Designs for Vibrating Structures Using a Moving Isosurface Threshold Method With Experimental Study
Quantian Luo,
Quantian Luo
School of Aerospace,
Mechanical and Mechatronic Engineering,
Mechanical and Mechatronic Engineering,
The University of Sydney
,Sydney, NSW 2006
, Australia
Search for other works by this author on:
Liyong Tong
Liyong Tong
1
School of Aerospace, Mechanical
and Mechatronic Engineering,
e-mail: liyong.tong@sydney.edu.au
and Mechatronic Engineering,
The University of Sydney
,Sydney, NSW 2006
, Australia
e-mail: liyong.tong@sydney.edu.au
1Corresponding author.
Search for other works by this author on:
Quantian Luo
School of Aerospace,
Mechanical and Mechatronic Engineering,
Mechanical and Mechatronic Engineering,
The University of Sydney
,Sydney, NSW 2006
, Australia
Liyong Tong
School of Aerospace, Mechanical
and Mechatronic Engineering,
e-mail: liyong.tong@sydney.edu.au
and Mechatronic Engineering,
The University of Sydney
,Sydney, NSW 2006
, Australia
e-mail: liyong.tong@sydney.edu.au
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received July 29, 2014; final manuscript received May 26, 2015; published online July 14, 2015. Assoc. Editor: Corina Sandu.
J. Vib. Acoust. Dec 2015, 137(6): 061005 (13 pages)
Published Online: December 1, 2015
Article history
Received:
July 29, 2014
Revision Received:
May 26, 2015
Online:
July 14, 2015
Citation
Luo, Q., and Tong, L. (December 1, 2015). "Optimal Designs for Vibrating Structures Using a Moving Isosurface Threshold Method With Experimental Study." ASME. J. Vib. Acoust. December 2015; 137(6): 061005. https://doi.org/10.1115/1.4030771
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