×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Mass 21 element and mass distribution in ANSYS apdl

Mass 21 element and mass distribution in ANSYS apdl

Mass 21 element and mass distribution in ANSYS apdl

(OP)
Hi,
I have modeled 3D airfoil in Ansys apdl. there are 8 airfoil sections for which I have defined shell element, some thickness and all material properties including density.
Now for modal analysis I need to modify mass distribution in each section such that mass moment of inertia of each section about elastic axis (not CG or origin) is as per the experimental values we have.
I am trying to use mass21 element for the additional mass attachment such that the desired moment of inertia can be obtained.
Following are my questions:
1. Is there any other way of getting desired mass and MOI ?
2. How to define mass21 element on the node in the airfoil section?
How to identify on which node the mass21 is to be defined?
3. I have experimental values only for Ixx, and not for Iyy, Izz does this matter in defining mass21 properties?

Any help in this direction would be of great help.

Thank You,

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!


Resources