corrugated steel plates - pressure in radial direction

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Dear all,

 

I am modelling a silo structure, that is loaded in horizontal direction. Walls of the silo are made of corrugated steel plates. How can I set pressure, that is not normal to the elements, as some elenents are not vertical - corrugated plates. I though that it would be possible to set is through creation of the cylindrical system, but it doesnt work. 

For fast question thanks!

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited December 2015

    Hi,

     

    Did you try pressure with equation option?see attached screenshot.

     

    Regards

    Rahul R

    <?xml version="1.0" encoding="UTF-8"?>Pressure with Equation.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Hello Rahul,

    yes, I have tried, but with no success. In the picture is shown what I was able to get (red arrows) and what I would like to get (green arrows). 

    If you would have any suggestions, I would be very thankful.

    Regards, Lukas

    <?xml version="1.0" encoding="UTF-8"?>example.jpg

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    And one more complication, as it is circular silo, it should be in radial direction...

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited December 2015

    why dont you try with forces on nodes?

     

    Regards

    Rahul R

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    I can try, I was not thinking about it at the moment.

    Regards, Lukas

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Maybe try PLOAD4 card with a cylindrical system ?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Hi Lukas,

     

    Why don't just have pressure load in a direction component? :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>

     

     

    <?xml version="1.0" encoding="UTF-8"?>Capture.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Here's my test

     

    <?xml version="1.0" encoding="UTF-8"?>HM_pressure_1.png

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Well guys, I am still trying all the options, advices you recommended me I have tried the first. I have to mention that I am using ANSYS enviroment, so there is not PLOAD4 option. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Lukas,

     

    PLOAD4 is the pressure model for OptiStruct. PRESSURE is the card for ANSYS. Please try that.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    At the moment, for me the best solution of the problem is to simple set nodal forces in cylindrical CS. Thanks guys for support, see you soon here on the forum. Have a nice time during Christmas!

    Lukas

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Nodal forces is a simple solution. Not sure that's 'the best' :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>

    If your mesh is very regular QUAD, you can compute easily nodal force from pressure. Be ware about that if you work with not regular TRIA mesh.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    That is definitely true. Fortunately my mesh is very very regular, still for the cost of the high amount of quad elements. Whatever, I am happy that I have solution for my problem, maybe I will play a little bit, but important is to have a solution for problem.

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