Loading…
This event has ended. Visit the official site or create your own event on Sched.
Welcome to ICSV26!
Back To Schedule
Thursday, July 11 • 09:20 - 09:40
SIDE EFFECTS OF USING COIL SPRINGS AS AN APPROXIMATION OF FREE BOUNDARY CONDITIONS IN MODAL ANALYSIS

Log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.
In the modal tests used to verify the finite element model, free boundary conditions are usually simulated. It is generally known that any kind of boundary conditions affect the measured modal parameters. The modal damping rather than the modal frequency is affected more significantly. Due to this, the use of coil springs for fixturing the measured parts seems to be optimal in terms of damping. Coil springs themselves have very little damping. However, during a series of experiments, coil springs have been shown to negatively affect the vibration of the test piece and hence its modal parameters. The content of this paper is a description of this phenomenon and how to avoid it.

Moderators
MJ

Miroslav Janota

Ph.D., Czech Technical University in Prague
avatar for Vadym Kruts

Vadym Kruts

Senior researcher, G.S. Pisarenko Institute for Problems of Strength of the National Academy of Sciences of Ukraine

Authors

Thursday July 11, 2019 09:20 - 09:40 EDT
St-Laurent 4
  T07 Struct. dyn. & nonlin. vib., RS01 Modal analysis