×
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

time dependant features

time dependant features

time dependant features

(OP)
Hi all,
what are time dependant features? I've seen the list i.e. assembly features, in context, etc. I guess I dont grasp the "time" part.

RE: time dependant features

swmetal,

My understanding is that 'Time dependant features' are features such that there results are affected by the order they appear in the feature tree.

Ex) Start with a block. Cut a hole thru it. Then create another extrusion that partially blocks the thru-hole.

 Now, re-order the features so that the cut (hole) is after the second extrusion.

You have the same features, but in the first scenario the hole  is not completely thru the part, but is partially blocked. In the second scenario, the hole cuts thru everything because it was created later in the feature manager.

Time Dependepen Features and features that will create different results depending on the order they are executed. (Features are built in succession, results depend on what time(order) each is created)

On the contrary, an example of a Non-Time Dependent feature would be offsetting one of the reference planes. It doesn't matter when in the model you create this, it will always be the same.

Hope this helps explain it a little,
Lou

RE: time dependant features

(OP)
Thanks GLED
Seems they should be "order dependant features". I guess symantics. Thanks

RE: time dependant features

GLED, I don't think your explanation is accurate.

Assembly cuts are an example of time dependent features.  For example, your design requires welding a block with holes to another block without holes, then having the holes matched drilled.  You would create the match drilled holes in the weldment assembly, not in the individual block part models.  

"Art without engineering is dreaming; Engineering without art is calculating."

Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?

RE: time dependant features

MadMango,

I think you are correct

In searching a little, I found a brief explanation.

Time Dependent Featrues:
They are basically anything that comes after the mates in the assembly. The reason these are important are that in an assembly, the part must be solved first, then the mates.

Thanks for correcting me,
Lou

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