Design and Validation of a Low Frequency Anti-Vibration Mount using NBR-Carbon Fiber Composite

Authors

  • Shajahan K DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India
  • Arun Sundar RS DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India
  • Ramesh Kumar AV DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India
  • Reji John Cochin University of Science and Technology, Kochi, Kerala, India

DOI:

https://doi.org/10.3849/aimt.01967

Keywords:

vibration isolation, composite anti-vibration mount, transmissibility, nitrile rubber, low-frequency mount, finite element modeling, creep

Abstract

The vibrations generated by onboard machinery can adversely impact stealth of marine platforms. Designers typically mitigate the source of vibration; however additional passive anti-vibration mounts have to be used for isolating equipment above a specific frequency threshold. This study focuses on the development, testing, and comparative evaluation of composite anti-vibration mounts incorporating short carbon fiber reinforcement in an NBR matrix. Three damping elements designs were optimized based on the stress-strain properties of five NBR compositions with varying short-fiber loading. The research involved designing and testing the mounts, FEM of the materials, FEA of the mounts, and experimental validation. Among the tested designs, model-2 with 2 parts per hundred rubber (phr) fiber loading demonstrated superior vibration damping performance for low-frequency applications.

Author Biographies

  • Shajahan K, DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India

    Mr. Shajahan K obtained B.Tech and M.Tech from the Cochin University of Science and Technology (CUSAT), Kochi, India, working scientist in DRDO-NPOL, Kochi, currently pursuing Ph.D at CUSAT in the area of low frequency antivibration mounts. His current contribution is: Design of rubber composition, Design and validation of mount, characterization and realizing the prototypes, evolution of idea behind the paper, compilation of results and authoring of the paper.

  • Arun Sundar RS, DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India

    Mr. RS Arun Sundar obtained MSc in Chemistry from Manonmaniam Sundaranar University, Tirunelveli, Tamilnadu. His current contribution is mechanical property evaluation and characterisation using instruments.

  • Ramesh Kumar AV, DRDO-Naval Physical & Oceanographic Laboratory, Thrikkakara, Kochi, Kerala, India

    Dr. AV Ramesh Kumar received MSc from Andhra University, Visakhapatnam and PhD from CSM Kanpur University, Kanpur, India. His current contribution is research supervision, input for characterization and editing of paper

  • Reji John, Cochin University of Science and Technology, Kochi, Kerala, India

    Dr. Reji John obtained his M.Tech from CUSAT, Kochi, India and PhD from IIT, Chennai, India. His current contribution is: Supervisory contributions, editing of paper and its structural modifications, discussions and ideas to evolve the work as a paper

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Published

06-06-2025

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Vol. 20 No. 1 (2025)

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Original research article

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How to Cite

Shajahan, K., RS, A. S., AV, R. K. ., & John, R. . (2025). Design and Validation of a Low Frequency Anti-Vibration Mount using NBR-Carbon Fiber Composite. Advances in Military Technology, 20(1), 227-295. https://doi.org/10.3849/aimt.01967

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