Natural mode contribution display
Challenge: Display natural mode contribution ratio effectively
Natural modes as well as panel contribution ratios derived from MSC Nastran are displayed, which are quite important information to analyze mechanism of the phenomenon and resonant peaks.
However, it requires software to display them effectively since the output data of contribution ratios from MSC Nastran are text data and it is often hard to find outstanding modes which act on the peak.
How to resolve pains:
Applying ESTECH.PlotTool makes the graphical display of the contribution ratio data from MSC Nastran effectively, which are listed below.
- MCFRACTION (Contribution for natural mode of vibration response.)
- FLSPOUT (Contributions for structural mode regarding pressure response/acoustic mode/acoustic load/panel/panel structural mode/node mode.)
- PFMODE/PFPANEL/PFGRID (Contributions for structural mode/acoustic mode/panel/panel structural mode/node mode.)
Strength of the Software
- Applying the software together with ESTECH.NAST+ generates extra contribution ratio output which does not come out from ordinary MSC Nastran calculation, such as contribution ratios to velocity and acceleration responses as well as modal acoustic radiation coefficients.
- Even though there are more than 1000 modes, substantial contribution modes and/or panels are to be identified instantly.
- Five different displays are selective respectively, which makes it possible to analyze phenomenon from multidirectional viewpoints.
Software to be applied
*The name of company and/or individual product name mentioned above are either trademark or registered trademark.
