CATIA V5 - GSA - Frequency Analysis
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Nice video!
I have a couple of questions: - Why do you put the pressure only on a blade (and then the results seem like axil-symmetric? - What's the first warning you get? - What is the physical meaning of the modal results? I never understood these analysis
Thank you!
davidgruty 3 weeks ago
@davidgruty :Thanks.
1- When pump starts running, fluid will be pumped by single blade until it fullfilled. In practice, pump is started after had filled with fluid that being pumped, but this is the worst case scenario. It's axi-symmetric because centrifugal forces (caused by rotational velocity) have much bigger effect than the applied load.
mecharon 3 weeks ago
@davidgruty :
2- It says model may be underconstrained, and I might have wrong results. But that isn't important because there is no singularity error after warning, so I can trust my results.
3- It says impeller will start behaving unsteadly, when those applied loads as harmonic loads at 1814,53Hz. Therefore, impeller's rotational velocity shouldn't be around of 1814,53Hz.
mecharon 3 weeks ago