@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.
@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.
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!
So the reason we do fre.analysis is to find out at which frequency it will behave unstable... correct me if im wrng. So hw bout the other mode? Wht sort of infomation cn we find?
Thank you. I don't know, sorry. You can look into CATIA's help documentation. There are explanatory and step by step documentsin it. It'll be helpful if you look into Harmonic and transient analysis theory too. Frequency analysis alone is sufficient for simple systems, but for complex systems, additional analyzes, like harmonic, transient or ramdom vibration analysis, have to be done too. You can study Harmonic and Transient Dynamic Response Case in CATIA.
@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.
@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 thank you very much for the fast and nice answers!
keep it up!
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!
Nice video very explanatory
how do u know it will behaving unsteadly at 1814.53Hz??? is it because it is in the first mode???
So the reason we do fre.analysis is to find out at which frequency it will behave unstable... correct me if im wrng. So hw bout the other mode? Wht sort of infomation cn we find?
Thank you a lot, mecharon!
It was really helpful. Do you know where I can get additional tutorials on vibration analysis in catia?
Thank you. I don't know, sorry. You can look into CATIA's help documentation. There are explanatory and step by step documentsin it. It'll be helpful if you look into Harmonic and transient analysis theory too. Frequency analysis alone is sufficient for simple systems, but for complex systems, additional analyzes, like harmonic, transient or ramdom vibration analysis, have to be done too. You can study Harmonic and Transient Dynamic Response Case in CATIA.
İsmail H. ŞANLITÜRK Thank you. I will go through the options :)
Hi, can you make some vibration analysis of Drill bits
Yes.
Sir It is very helpful video but i need your help for my project where i have did my project on impeller of centrifugal pump
Sry im totally new in this matter... :)