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Effects of nanoparticles on the improvement of the dynamic response of nonuniform-thickness laminated composite beams

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Abstract

The dynamic behavior of nonuniform-thickness laminated composite beams, such as helicopter blades, wind turbine blades, and robot arms, is of high importance in the design and fabrication of such elements. Changing the thickness of laminated structures is a significant challenge during fabrication because different tapering configurations may significantly alter the stiffness of the structures and thus the dynamic response of the structures. In this study, the effect of adding nanoparticles to resin on the stiffness and dynamic behavior of nonuniform-thickness laminated composite beam elements was investigated. A set of experiments were conducted to examine the natural frequencies and damping coefficients of nonuniform-thickness laminated composite beams with different tapering configurations. Adding nanoparticles up to 3% increased the natural frequencies for all tapering configurations. Beyond 3% and up to 7% of nanoparticles, the natural frequency of the beam decreased. The addition of 10% of nanoparticles to resin sharply reduced the natural frequency of the beam but significantly improved the damping coefficient for all the investigated taper models.

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Authors and Affiliations

  1. School of Science and Engineering, Sharif University of Technology, International Campus, Kish Island, Iran

    Abolghassem Zabihollah, Saman Momeni & Ali Selk Ghafari

Authors
  1. Abolghassem Zabihollah
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  2. Saman Momeni
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  3. Ali Selk Ghafari
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Corresponding author

Correspondence to Abolghassem Zabihollah.

Additional information

Saman Momeni received his B.Sc. and M.Sc. degrees in Mechatronics Engineering from the Sharif University of Technology International Campus in 2011 and 2013, respectively, specializing in smart structures and vibration control. He is currently working on research projects on smart structures and vibration control using magnetorheological fluids.

A. Zabihollah received his Ph.D. degree in Mechanical Engineering from Concordia University, Montreal, Canada in 2007. He is the author of more than 50 publications on smart structures, vibration suppression, and design optimization. Dr. Zabihollah is currently working at the International Campus of Sharif University of Technology in Kish Island.

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Zabihollah, A., Momeni, S. & Ghafari, A.S. Effects of nanoparticles on the improvement of the dynamic response of nonuniform-thickness laminated composite beams. J Mech Sci Technol 30, 121–125 (2016). https://doi.org/10.1007/s12206-015-1214-7

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  • DOI: https://doi.org/10.1007/s12206-015-1214-7

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