How to Compare Analytical and Measured Forces?

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Discussion Overview

The discussion centers around methods for comparing forces derived from an analytical model with those obtained from measurements, specifically in the context of a finite element method (FEM) simulation involving electromagnetic forces. Participants explore different approaches to assess the accuracy of these comparisons.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that comparing the three components of the forces leads to significant relative errors, while comparing the relative error of the norms and the angles between the forces yields better results.
  • Another participant inquires if the context involves a strain gauge experiment, indicating a potential misunderstanding of the experimental setup.
  • A subsequent reply clarifies that the discussion pertains to a FEM simulation involving electromagnetic forces, suggesting a different framework for comparison.
  • One participant requests further explanation, indicating that more details are needed to fully understand the comparison methods being discussed.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best method for comparing the forces, and multiple viewpoints regarding the comparison techniques remain present.

Contextual Notes

The discussion lacks detailed explanations of the analytical model and the specific methods used for measurement, which may affect the clarity of the comparison approaches being proposed.

baggiano
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Hello

Suppose we have to compare a set of forces calculated with an analytical model to a set of measured forces.

What in your opinion is a good way to compare the forces? I have noticed that comparing the 3 components of the forces (suppose that we can measure all of the simultaneously) leads to unpleasant relative errors while expressing the relative error of the norms together with the angles between the forces gives a better results.

What do you think?

Thanks in advance and kind regards

Bag
 
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Is this a strain gauge experiment?
 
Nope. It is a FEM simulation involving electromagnetic forces :smile:
 
You would need to explain more fully.
 

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