how to load pressure on the solid element?

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

I don't know if the result is different, when load pressure on the solid element or on shell element. If it is, how can i load pressure on the solid element? thank for your answer!

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    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    extract the faces of the element and apply suitably on the required surface

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    In that case, what would be the property to assign to that surface? PSHELL? And thickness?  I have checked that thickness influences results in this case.

     

    Thank you in advance,

     

    Pablo.

     

    User: "tinh"
    Altair Community Member
    Updated by tinh

    Hi

    Just apply a very thin thickness, bending will be neglectable

    But it is faster and simpler to apply pressure directly to solid elems

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi,

    ¿And how can I apply these pressures directly to solids when I want to apply a field? As long as I know, if I choose a few solids elements from field selector, pressure is applied on the middle of the elements instead of on the external surface.

     

    Thank you once again,

     

    Pablo.

    User: "Rahul Rajan_21763"
    New Altair Community Member
    Updated by Rahul Rajan_21763

    Now from version 14.0 you can apply pressure by faces (no need to extract faces) & pressure acts on element normal direction.

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    What I want to do in the end is applying a pressure (import from an ansys model) which is initially applied beneath a thin layer of 2D elements, created automatically when imported. But I have checked that, even it seems to be correctly configured, when I modify 2D elements properties, results (displacement plot) also change, a lot. F

    I have used as 2D elements properties:

    - PSHELL

    - T=0.001 mm

    - Material settings similar to steel and other property settings by default.

     

    General appereance of results, when compared to the ansys one (which is checked), is very different so I suspect that this way of applying pressure is the main cause of the discordance. I would appreciate any kind of advice or suggestion.

     

    Pablo.

    User: "tinh"
    Altair Community Member
    Updated by tinh

    Yes this method applying pressure is not good I think. You should apply pressure directly on solid elems. If you cannot do it your self, send us your model, we could give a try

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    I have been able to solve this problem introducing a very thin thickness as you said, and results are good enough. Finally the problem were material properties which depended on temperature. Thanks for the offer.

     

    Pablo.