×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

FEA: Boundary Conditions Help for Multicopter

FEA: Boundary Conditions Help for Multicopter

FEA: Boundary Conditions Help for Multicopter

(OP)
Hi,

I would like to analyze the structure of the UAV that I have for different loading conditions. It is a simple quad-copter with co-axial motors at each motor arm (I have 2 motors at each arm, so 8 motors in total). I have a global FEA model where I have all of the structure meshed with proper properties assigned to the elements and also ensuring element quality and connectivity. I have difficulties in choosing the right boundary conditions.

I ran a few test cases to understand the behaviour of the FEA model (basically, checking the reaction loads at constraint points). Among these test cases, the boundary condition which fit right was where I constrained the 3 translational degrees of freedom at the motor-points and applied mass elements for the motor, payload (5 kg), and the battery and ran 'gravity load analysis'. The reaction forces at the constraint points were equal to the thrust I would require to hover.

Now, I would like to understand how will the structure behave for the one-motor-failed condition. What boundary condition can I go for this case? Say, if what I have so far is incorrect and I need to assign loads at the motor points, where do I constrain my model?

Any help is highly appreciated. Thanks in advance!

Regards,
Shahid

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close