Spring element
Spring element
(OP)
I am analysing a vessel and i can not fix it any where hence i am trying to put it on the few spring elements but the problem is, i am not able to apply proper value of stiffnes and hence the stress is coming very high and at the point of spring location.
Pls if anyone can suggest me something.
Pls if anyone can suggest me something.





RE: Spring element
another day in paradise, or is paradise one day closer ?
RE: Spring element
Let me explain you the entire thing, its the pressure vessel(bullet). Huge size which going to be placed under geound hence the soil will act as a spring and vessel is free from all the sides. Not fixed anywhere. Hence i can not completely fix it anywhere. Since it is symmetrical presaure will be equal in all direction hence there is no need of constraining. Hope u understand. I tried differet stiffnes values but result is not coming exactly correct.and high stresses are at the spring location whih is not correct.
Pls comment.
RE: Spring element
"Since it is symmetrical pressure will be equal in all direction hence there is no need of constraining." you know this, I can accept it, 'cause we're smart and understand the problem. FEA is dumb and assumes things are flying in space unless it is told otherwise. I'd've thought you'd have some weight loads into the ground.
Maybe you should read up on constraining rigid body motion. If you are constraining each support in 3 dof, even with springs, you are doing it wrong (over constraining the model).
another day in paradise, or is paradise one day closer ?
RE: Spring element