×
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

vibration simulation on assemblies with nonlinear contact, NX nastran

vibration simulation on assemblies with nonlinear contact, NX nastran

vibration simulation on assemblies with nonlinear contact, NX nastran

(OP)
hello everyone,
I'm new with NX Nastran and I have a problem. I need to figure out which Nastran solution should be used to simulate forced vibration on a structure that include non linear contact.
My boss asked me to analyze the potential solutions in odder to purchase the needed license. so far I think the only choice is the 701 dynamic explicit solution, any other suggestion on how to simulate this problem?
thank you very much.

RE: vibration simulation on assemblies with nonlinear contact, NX nastran

I suggest you contact the software supplier's technical salesforce with details of what you are trying to do. In my experience they will be happy to point you in the right direction as far as licenses go, and will probably be able to point you at relevant case studies.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: vibration simulation on assemblies with nonlinear contact, NX nastran

Hi
I agree with Greg regarding the suggestion to contact the vendor. They should be able to help you regarding the required licenses and provide a test license so you can test your specific requirements.

But to give you some information anyway.

In NX Nastran there are actuallt three different non-linear transient solutions. The first comes from the original MSC.Nastran code. Since youy mention contact I can say that in my experience the contact capabilities are limited. Basically you have gap elements that handle node-to-node contact. If that works for you I think it is the cheapest option but it is limited.

Then you have the Advanced Nonlinear option (Adina inside NX Nastran). That handles surface-to -surface contact and has several options for this type of analysis. The capabilities are both static and transient. For transient you can either work implicit (SOL601) or explicit (SOL701). I would prefer to use a implicit solver for a vibration problem since explicit is better for short duration analysis. But it depends on you exact requirements. From a licensing point of view the implicit (SOL601) and explicit (SOL701) are in the same package.

The simple way is probably to ask for a 30 day evaluation license and test it.

Good Luck

Thomas

RE: vibration simulation on assemblies with nonlinear contact, NX nastran

(OP)
Thank you very much guys,
after analyzing the requirements of the simulation, we decided to adapt a dynamic explicit method. Now I just need to figure out how to run the simulations cause I read that is quiet tricky to set up an explicit model.
Have a nice day.

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

White Paper - How ESI is Helping Move New Medical Device Product to Market Quicker & More Cost Effic
Early Supplier Involvement has long been a strategy employed by manufacturers to produce innovative products. Now, it almost seems like a necessity. Because decisions made in the design phase can positively affect product quality and costs, this can help add value to OEM bottom lines. This white paper will discuss many facets of ESI, including why it’s so valuable today, what challenges limit the benefits of ESI, how cost is impacted, and more. Download Now
White Paper - Moving to a Driverless Future
This white paper describes what we see as the best practices to support a sustainable engineering process for autonomous vehicle design. It exposes how to use simulation and testing in common frameworks to enable design exploration, verification and validation for the development of autonomous cars at a system, software and full-vehicle level to drive a mature product development process for automated driving. Download Now
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

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