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Contact Surfaces

Altair Forum User

Hi,

I want to add a contact to my model. I am doing a Non-linear quasi-static analysis.

I have

1 material and 1 property PSOLID assigned to my two components
2 load collectors : SPC (Card Image : NLPARM) and Load (Card Image ; <None>)
1 Load step : SPC = SPC, LOAD=Load, NLPARM=SPC

I have created

2 contact surfaces (Card Image : SURF) master and slave,
1 group (Card Image : CONTACT, TYPE : SLIDE, SSID and MSID : the two contact surfaces I created),
1 property (Card Image : PCONT)

I don't know how to assign the property to the contacts surfaces, I can only select elements.

I have this error :

'CTRIA3 1 0 5 15 4'
*** ERROR # 1000 *** in the input data: Incorrect data in field # 3.

What would you suggest ? Thanks

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Pranav Hari

Hi Laure

It seems you have assigned solid property for shell element ( CTRIA3). Thus the error message. You can use PSHELL card image for shell elements like CTRIA3 and CQUAD4 and PSOLID for Solid elements.

Also refer this tutorial from Help which discuss on creating contact surfaces.

OS-T: 1365 NLSTAT Analysis of Solid Blocks in Contact

Hope it is clear..

Udhayakumar Ramasamy

When you are creating contact surfaces, create with solid elements. If you are creating with face elements (2D), you should consider that as a null and apply the property. In later method, if you delete the faces, the contact surface also will get deleted.

(Or )

check your model whether 2D elements are available (CTRIA3 is shell). You may have forgot to delete 2D elements before creating 3D elements.

Altair Forum User

Thank you.

I have now contact surfaces created with solid elements (not face elements any more). I have a new error :

'CONTACT 1 SLIDE'

*** ERROR # 1000 *** in the input data: Incorrect data in field # 4.

Do I have to create a property PCONT (in addition to the PSOLID property) ? If yes, to what should I assign both of them ?

Udhayakumar Ramasamy

No need to create PCONT for simple contact definitions...

If you are creating PCONT, it should be assigned to contact not to the parts.

Incorrect data in field #4 means, Master of your contact is not a valid entity. While creating contact surface use card image SURF and not ELIST. Or else share the deck to check that error.

Altair Forum User

No need to create PCONT for simple contact definitions...

If you are creating PCONT, it should be assigned to contact not to the parts.

Incorrect data in field #4 means, Master of your contact is not a valid entity. While creating contact surface use card image SURF and not ELIST. Or else share the deck to check that error.

Agree, but according to card field, 4 is slave set. Please check the slave is defined or not.

Altair Forum User

Hi,

thank you for your answers. I have not resolved the problem yet.

Could you please check this file ?

Unable to find an attachment - read this blog

Altair Forum User

Problem solved. Thanks