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How to apply varriable pressure in optistuct?
I have to apply variable pressure from 0.55Mpa to 0.055Mpa of pressure on tube varring along the circumference of tube.
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Maybe try PLOAD4 card?
I have tried by it but i have to apply variable pressure not uniform. I know how to apply uniform pressure but I am facing problem with applying variable pressure.
You can use method 'equation' or 'linear interpolation'.
Yes, You are correct but what equation I have to put for variable pressure acting from 0.55Mpa to 0.055Mpa on tube changing magnitude along the circumference of tube. I dont know how to form the equation or how to use linear interpolation method. Can u give an example of it, please.
Thanks for the reply Nguyen-Dai . 155
Define a local cylindrical system for your tube. Presuming that your pressure varies from 0.055 MPa to 0.55 MPa over 180° along circumference, your equation is something like:
p = 0.055 + 0.495 * y / 3.14159
( y = 0.0 .. 3.14159 rad , y is circumferential direction)
You enter only right side of this equation into Analysis => Pressure => equation. Don't forget to select your local cylindrical system thanks to the button 'system'.
Load type = PLOAD4
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