Learning Forum

[Marcos Garcia]

Hello,

I want to make a modal simulation in Ansys Workbench to find the natural frequencies of a plane during the flight. In this condition there is no a displacement restriction so I have several questions about how to perform the modal analysis.

• How can I make the modal analysis in a free flight condition of the plane?
• If I simulate only the wing using fixed displacement on the starting face of the wing profile, is it correct or I should use the whole plane for the modal analysis?
• Should I make all the body fixed except the wing to make the modal analysis? Considering that the wing will be the most critical part of the system

I hope you can give me some tips about that.

Thanks in advance,

Regards.

 

[Akshay Maniyar]

Hi Marcos,

Please check the below course on 'Modal analysis of wing'. It should help with your doubts related to modeling.

Modal Analysis of an Airplane Wing | Ansys Innovation Courses

 

Thanks,

Akshay Maniyar

[Marcos Garcia]

Hello,

Thanks for the reply,

According to the video-course that you sent me, I could simulate only the wing in modal analysis and there are no issues avoiding the modal analysis of the whole plane. My doubt was about the stifness of the system, I was not sure if the behaviour of the modal analysis in the wing would be the same using only the wing and using the whole model.

I wait your comments,

Thanks,

Regards.