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August 13, 2026Open Access

Experimental Investigation of Vibration Characteristics, Dynamic Balancing, and Critical Speed Analysis

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Authors

SMS. MulaniAAA. AwasareSPS.S. Patil

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Overview

Experimental investigation reveals critical speed behavior in rotating machinery, suggesting improved balancing techniques for industrial applications.

Key Points

  • The aim is to analyze vibration characteristics and critical speed behavior in a multi-disk rotor system to improve dynamic balancing methods.
  • Conducted vibration measurements using proximity probes and accelerometers across 0 to 4000 rpm.
  • Employed frequency response function analysis to identify natural frequencies and damping ratios.
  • Performed two-plane dynamic balancing to significantly reduce peak bearing vibration.
  • Dynamic balancing decreased peak bearing vibration by 85% (from 186 µm to 28 µm at the drive-end bearing).
  • Identified five natural frequencies and critical speeds, including a 1st bending critical speed at 2880 rpm.
  • Residual excitation from angular misalignment revealed as the next issue for further vibration reduction.

Cite This Study

Mulani et al. (2026) studied this question.

synapsesocial.com/papers/6a7d76e62b0e0cff3f640af2https://doi.org/10.5281/zenodo.21885490
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Also Consider

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  1. 1Dynamic Characteristic Analysis of Long‐Shaft Dual‐Rotor System Considering Unbalance Excitation and Crack Fault2026
  2. 2Experimental study of on-site dynamic balancing of a turbine power simulator2025
  3. 3Critical speed and forced vibration analysis of rotor-bearing systems with asymmetric elastic bearings2026 · 1 citations
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  5. 5Design and validation of a high-speed rotor balancer based on influence coefficient method and dual-speed control.2026 · 2 citations