Other services

Balance Calculations, Simulation of Shock and Vibration Tests, Field Measurements

Balance calculations

We offer mass and energy balance calculations. Chemical reactions can also be accounted for.

Balance calculation can be utilized in:

  • estimating product and required raw material amounts
  • analysing process streams and their composition
  • equipment sizing
  • eliminating measurement errors
  • estimating heating and cooling demands

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Simulation of shock and vibration tests

Many structures and instruments attached to different vehicles need to fulfil certain shock or vibration resistance requirements. In most cases this has to be proved using physical shock or vibration testing according to some specific standard.

Fulfilling these requirements is often difficult and time consuming and several product development iterations are needed. In particular, a vibration fatigue assessment is very time consuming using traditional product development tools.

At Stressfield, we have simulated short duration shock tests as well as long duration vibration tests for equipment in ships and railway applications. Simulations have provided reliable results in a relatively short time. The results were later confirmed using physical testing according to the applicable standards.

ASD Spectrum in vibration test (mm/s^2)^2/Hz

PSD-response (MPa^2/Hz)

Field measurements

Field measurements are used to determine the true loading behavior of structures and to guarantee that the loading assumptions used in FEA are realistic.

The measurements most often consist of strain gage, hydraulic pressure and acceleration measurements.

The measurement project is planned and the results of it are analysed by Stressfield Oy, whereas the measurements are conducted by our subcontractor.

Measurement in harbor during wintertime.

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