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

RMS displacement in Nastran

RMS displacement in Nastran

RMS displacement in Nastran

Hello All,

I am trying to plot the RMS displacement for a structure I am working on.
I am using the below output request to get it out of Nastran.
Next I am importing the .op2 file in Altair's HyperView and I want to plot the RMS displacement, but it is not there. It only contains the results of the 1g sine analysis which is done prior to the random analysis.
The same deck works just fine for retriving the RMS stress by using STRESS(PLOT,CRMS,NORPRINT)=ALL.
Is this a post-processor (HyperView) issue or I am missing something?

RE: RMS displacement in Nastran


I have tried to load the displacement CRMS in HyperView with a model I have been working recently and it does not appear, as you said. I was obtaining the VM stresses, so I did not output the displacement results.

It seems to be a problem of HyperView, because the displacement RMS can be seen in the punch file (attached image), so maybe you can use this way. I really do not know much about HyperView postprocessing random analyses because I have been postprocessing these results with Patran, but I am trying to understand how HyperView works with the random data from Nastran.

If you finally overcome this problem with HyperView, please explain how.

I hope it helps.

RE: RMS displacement in Nastran

Thank you! I think it is a limitation Hyperview has related to this.

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


Research Report - How Engineers are Using Remote Access
Remote access enables engineers to work from anywhere provided they have an internet connection. We surveyed our audience of engineers, designers and product managers to learn how they use remote access within their organizations. We wanted to know which industries have adopted remote access, which software they are using, and what features matter most. Download Now
eBook - Managing the Context of Product Complexity Using the Digital Twin
Keeping track of changes to complex products is difficult—think Aerospace & Defense equipment, new generations of commercial aircraft, and software-based automobiles. A new way to managing the digital context of the physical product is required and the answer is the Digital Twin. This ebook explores the opportunity available for Operations and Maintenance for the Digital Twin. Download Now
White Paper - Trends in Industrial Filtration
Substantial progress has been made in filtration technologies in recent years. New filter media materials, designs and processes have led to filters that are more efficient, reliable, compact and longer lasting. This white paper will discuss the various trends that are impacting operational responsibilities of MROs today and the resources that are available for staying up-to-date on the latest filtration solutions. 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