×
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

Modeling a hydraulic cylinder?
2

Modeling a hydraulic cylinder?

Modeling a hydraulic cylinder?

(OP)
So how would you do it? I DID  do a search and didn't really find anything.

Pretty much everything we do at work involves hydraulic cylinders. But we purchase them, so we don't need to detail them fully. Now as I understand it, SW can have "deformable" materials....is that true?  because I was thinking that I could just make the rod of the cylinder "deform" between closed and open.

I realize I could model the cylinder as two separate parts: the body, and the rod/piston. I could just model uch that the physical dynamics would give me what I want. But I'm curious if there was a way I could do it as a single part, just for simplicity's sake.

Anyone with a good answer will receive many stars for their wisdom......

RE: Modeling a hydraulic cylinder?

Have you worked through the SW Online Tutorials? If you haven't, I strongly suggest that you do.
If you have, then you need to revisit the Design Table one. It explains how to create Configurations within a single part.
You will not have to "deform" anything in your Hydraulic Cylinder ... simply create different lengths of the rod, per configuration, using either a DT or manually.
Please also read the configurations, create manually section in the SW Help files.


Making the best use of this Forum.  FAQ559-716
How to get answers to your SW questions.  FAQ559-1091
Helpful SW websites every user should be aware of.  FAQ559-520

RE: Modeling a hydraulic cylinder?

Make your cylinder as an assembly using an "Advanced" mate to set the stroke. Once you insert it into an assembly, set properties to "Flexible" and then you can have its rod move in and out freely and thereby constrain the rest of your assembly.

Be advised that you'll need to create new configurations for each instance if you use the "Flexible" approach.

Beyond that, I'd echo CBL's advice.

--------------------
Bring back the HP-15
www.hp15c.org
--------------------

RE: Modeling a hydraulic cylinder?

(OP)
Cool... I keep forgetting about the configurations. I do need to learn up on those.

Thanks!

RE: Modeling a hydraulic cylinder?

Begger,

In SW2005 you no longer have to make separate configurations.

Regg

RE: Modeling a hydraulic cylinder?

(OP)
Sorry to revive this thread, but my question is kinda related. And I did go throught he help and I didn't really find what I wanted.

I made my hydraulic cylinder, (as an assy) with my advanced mate. And it's works great. But now if I insert it into my top assy, it gets treated as a rigid part. How can I "un-rigid" it, so that the cylinder rod will move when it's in my top assy?

RE: Modeling a hydraulic cylinder?

(OP)
never mind... "flexible".

as you were.

RE: Modeling a hydraulic cylinder?

In your top level go to the sub assy you want flexible and rmb and properties. Lower right is rigid/flexible selection, select flexible.

Don't worry about people stealing your ideas. If your ideas are any good, you'll have to ram them down people's throats.
--Howard Aiken, IBM engineer

RE: Modeling a hydraulic cylinder?

RMB the cylinder in the Feature Tree, under properties there is a choice to solve it as rigid or flexible, choose flexible.

RE: Modeling a hydraulic cylinder?

Disclaimer: I am in no way affiliated with Bosch-Rexroth,

But they do have a fantastic online cylinder designer that will give you a solid model at the end - granted the solids are dumb but parts can be made such as the cylinder body and rod with rod end.

DW

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