Column profile with base plate analysis

[algpi]

Dears,

I've got question to You, regarding one direction constraint.
In attachment column profile with base plate where I would like to add constraint in Y(-) direction only to plate.
This will reprezent some e.g. concrete, steel base, etc..

I don't want to model any base and adding contact between base plate and it.
I would like to simply add some constrain / connector to base plate with e.g. stiffnes only in one direction e.g. Y(-), and Y(+) have free to move.

Constraint what I'm looking for I've got found in Frame Analysis (custom constraint), please see attachment.

Is it posible to do it in NiC?

Thank You in advance for Your help
Best Regards
Maciej

[algpi]

Dears,

I've got question to You, regarding one direction constraint.
In attachment column profile with base plate where I would like to add constraint in Y(-) direction only to plate.
This will reprezent some e.g. concrete, steel base, etc..

I don't want to model any base and adding contact between base plate and it.
I would like to simply add some constrain / connector to base plate with e.g. stiffnes only in one direction e.g. Y(-), and Y(+) have free to move.

Constraint what I'm looking for I've got found in Frame Analysis (custom constraint), please see attachment.

Is it posible to do it in NiC?

Thank You in advance for Your help
Best Regards
Maciej

[John_Holtz · Accepted solution]

Hi Maciej,

The Nastran solver does have gap elements (CGAP and PGAP cards in the .nas file), but Inventor Nastran/Nastran InCAD does not have a method of creating those elements. So Inventor Nastran/Nastran InCAD does not have the equivalent of a 1 way constraint.

Here are your options:

1. If you have Nastran In-CAD 2019 or Inventor Nastran 2020, you should have the Nastran Editor. In theory, you can modify the .nas file and add gap elements to create the one-way constraint.
2. Model a slab (make it a 1 element shell part) and define separation contact.
3. Ignore the effects and keep the analysis the way you have it.

[John_Holtz · Accepted solution]

Hi Maciej,

The Nastran solver does have gap elements (CGAP and PGAP cards in the .nas file), but Inventor Nastran/Nastran InCAD does not have a method of creating those elements. So Inventor Nastran/Nastran InCAD does not have the equivalent of a 1 way constraint.

Here are your options:

1. If you have Nastran In-CAD 2019 or Inventor Nastran 2020, you should have the Nastran Editor. In theory, you can modify the .nas file and add gap elements to create the one-way constraint.
2. Model a slab (make it a 1 element shell part) and define separation contact.
3. Ignore the effects and keep the analysis the way you have it.

[algpi]

Thank You John

[algpi]

Thank You John

[rlkillian]

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[rlkillian]

This is something I feel is need very badly. Please go here and vote for it. Thanks for posting this.

[ken.friesen]

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[ken.friesen]

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