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Study on Dynamic Characteristics of Resilient Mount Under Preload.

Sung-Ju Park1,2, Byoungjae Park3, Joo-Yeob Lee4

  • 1School of Electrical & Control Engineering, Tongmyong University, Busan 48520, Republic of Korea.

Materials (Basel, Switzerland)
|October 26, 2024
PubMed
Summary

Accurate prediction of resilient mount behavior is crucial for vibration isolation. This study reveals how preload affects mount dynamics, shifting resonance frequencies and improving naval anti-vibration designs.

Keywords:
Yeoh modeldriving point dynamic stiffnesshyperelastic materialresilient mountstatic and dynamic analysis

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Area of Science:

  • Mechanical Engineering
  • Materials Science
  • Applied Physics

Background:

  • Resilient mounts are critical components for vibration and shock absorption in various applications.
  • Accurate prediction of their static and dynamic properties is essential for effective design and mechanical performance.
  • Understanding these characteristics is particularly important for optimizing vibration isolation systems in demanding environments like naval applications.

Purpose of the Study:

  • To investigate and predict the static and dynamic characteristics of resilient mounts.
  • To calibrate and validate hyperelastic material models for describing mount behavior.
  • To analyze the influence of preload on the dynamic response of resilient mounts.

Main Methods:

  • Quasi-static tension, compression, and shear tests were conducted to generate stress-strain curves.
  • The Yeoh hyperelastic model was reviewed and its parameters calibrated using experimental data.
  • Numerical analysis and simulations, including modal analysis and frequency response, were performed.
  • Validation was achieved by comparing numerical predictions with experimental quasi-static test results.

Main Results:

  • The Yeoh model parameters were successfully calibrated and validated for the resilient mount material.
  • Increasing preload was found to significantly shift transmissibility curves and resonance peaks to lower frequencies.
  • Dynamic behavior analysis provided insights into how preload affects vibration isolation performance.

Conclusions:

  • The study provides valuable insights into the static and dynamic characteristics of resilient mounts.
  • The findings contribute to the improved design and optimization of vibration isolation systems.
  • This research is particularly relevant for enhancing the performance of resilient mounts in naval applications.