Dear members,
I request you to please confirm the number of modes ( if possible with approximate modal frequencies) in the picture which can be found at http://rapidshare.com/files/59768133/trans.png.html
That curve is in between transmissibility ratio (acceleration ratios) and the excitation...
Dear members,
In our present task, we have to evaluate Rayleigh damping coefficients.
--> Could anyone suggest how they can be evaluated?
--> Do Rayleigh damping co-efficients vary with modes?
Suggestions are most welcome.
Regards
Hello dear members,
I am bit newbie to the Exp Modal Analysis. Recently, we conducted several experiments and we were with certain transmissibility ratio data along with the frequency. After maknig transmissibility ratio vs frequency charts, I was able to determine peaks in the chart. Now, the...
Hello friends,
I am in damn need of the best possible method for finding noise reulting from vibrations. i.e for noise calculations, transient vibration results are the inputs.
My postprocessor supports
Sigma1, Rayleigh, Helmholtz (all based on Rayleigh intergrals)
&
Indirect Boundary Element...
Hello members,
I am working on shell emitted noise and I am required to optimise the noise considering damping (modal).
As a part of that, I need to determine damping ratios experimentally. The simulated first natural frequency of the structure is of 300Hz. Now, I need to know which experimental...
