Prokon Mode Shapes Explained

Both Prokon’s Frame and SUMO modules offer a variety of analysis types, which can be categorized into two main groups:

Static Analysis:

  • Linear
  • Second-Order
  • Non-Linear
  • Buckling

Dynamic Analysis:

  • Modal
  • Seismic
  • Harmonic

In all dynamic analyses, a key parameter you must specify is the number of mode shapes. But what exactly is a mode shape? Let’s break down the term:

  • Mode: This refers to a specific pattern of structural behavior when the structure is subjected to dynamic excitation or disturbance.
  • Shape: This describes the form or configuration the structure assumes in that mode.

Thus, a mode shape represents the specific deformation pattern that a structure adopts under dynamic conditions.

When you perform a modal analysis, the output will include a specific frequency associated with each mode shape. This frequency represents the natural frequency at which the structure vibrates in that mode shape.

A critical point of consideration is however the number of Mode Shapes. If the number is not correct, your output will not be reliable. Check out our blog explaining how to correctly determine the number of Mode Shapes.

An essential aspect to consider is the number of mode shapes used in the analysis. If the number of mode shapes is not properly determined, the results of your analysis will be inaccurate and unreliable. For a detailed explanation on how to correctly determine the number of mode shapes, please refer to our blog [here].

Blog CTA Request a Quote

Still looking for answers? Start a discussion with other professionals in your industry!

chat on our forum button

Was this helpful?

Thanks for your feedback!

About the Author

SHARE

About the Author

SHARE