Vibration Consultancy Services

Vibration Consultancy

JSK Vibrations is a vibration consultancy operating in many different industries. Our vibration specialists can assist with:

  • Vibrations in buildings.
  • Vibration in machines.
  • Vibrations of bridges/towers/chimneys

Vibration services – 3 main areas

Vibration measurements

  • Measurements of natural frequecies, damping and vibration level in buildings
  • Measurement on and around rotating machinery.

Continous measurements over a longer period of time is also possibel e.g. for:
– Human induced vibrations
– Vortex induced vibrations
– Machine induced vibrations

Vibration Consultancy Analysis

  • Finite element analysis to determine vibration comfort
  • Optimization of structural elements
  • Calculation & measurements are compared with the relevant standard.

Tuned Mass Dampers

  • Design of tuned mass dampers (TMD)
  • Construction
  • Installation
  • Verification


Vibration Consultancy Cases

Case: Vibration Measurements in Office

Vibration Services:
– Vibration measurements on floors.
– Suggestions for improvement of vibration comfort.
– Memo with documented results.

Results:
– First natural frequency: 9.0 Hz.
– Accelerations: 0.9 % of gravity.
– Criteria for accelerations not fulfilled.

Case: Compressor Vibrations in Factory

Vibration Services:
– Vibration measurements on compressors, deck.
– Suggestions for improvement of vibration comfort.
– Memo with documented results.

Results:
– Compresor frequencies: 60-80 Hz.
– Accelerations: up to 1 % of gravity.
– Criteria for accelerations not fulfilled.

Case: Complaint on vibrations in apartment

Vibration Services:
– Vibration measurements
– Finite element model (Calibrated to measured frequencies)
– Suggestions for improvement
– Memo

Results:
– First natural frequency: 6.7 Hz
– Accelerations: 0.5-1.0 % of gravity
– Criteria for acceleration not fulfilled.


Vibration Consultancy Experience

  • Design of more than 50 tuned mass dampers for floors, stair cases, grand stands, pedestrian bridges and fitness centers.
  • Assessment and calculations of vibrational comfort for 100+ structures.

Publications

Ready to help you:

Vibration Specialist:
Jonas Syders Knudsen
M.Sc Engineering
jsk@jsk-vibrations.com
+45 61 39 61 62
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