×
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

winLIFE 4.0: Multiaxial Fatigue Analysis for FEMAP & NX Nastran

winLIFE 4.0: Multiaxial Fatigue Analysis for FEMAP & NX Nastran

winLIFE 4.0: Multiaxial Fatigue Analysis for FEMAP & NX Nastran

(OP)
Hello!,

I have just written a post in my blog regarding the new release of winLIFE 4.0, a fatigue analysis software integrated with FEMAP that take advanced of NX NASTRAN stress results (and from others FEM/FEA codes as well) to perform Fatigue Analysis, both uniaxial & multiaxial. The post is written in Spanish language, but you always can use the Google translator:
https://iberisa.wordpress.com/2015/12/08/winlife-4...

By means of a tutorial example I explain how to use both winLIFE 4.0 & Femap interface to perform the multiaxial fatigue analysis of a Rotating Shaft with an internal bore hole and a cross hole. A fatigue life calculation is to be carried out for this component for a rotating movement around the middle axis.

In the simulation the "trick" used was the following: instead of rotating the shaft with a fixed load, the shaft is fixed and the load rotates around the shaft. The loading of the shaft is given in angular increments, selecting an "angular window" of 90°, which results in load application angles of 0°, 90°, 180° and 270° for a unit load of 1000N. The continuous rotating movement is shown by four load cases (in real life problems the recommendation is to use a window of 30º for accuracy reasons).



Here you are the excelent quality mesh of the rotating shaft using 3-D solid hexaedral CHEXA 8-nodes elements:



Here you are the stress results for the rotating shaft at the load application angle of 0º:



And here you are the Fatigue Damage Sum results back in FEMAP for postprocessing:



And finally here you are the Utilization Ratio results back in the FEMAP model: an utilization ratio of 1.0 signifies the endurance limit is reached. A degree of utilization of 0.044 means a 4.4% usage of the endurance limit. The Utilization Ratio is the inverts of the Safety against Endurance Limit, result computed as well by winLIFE.



Best regards,
Blas.

~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director

IBERISA
48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog de FEMAP & NX Nastran: http://iberisa.wordpress.com/

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