FE Model of a cockpit door window
FE Model of a cockpit door window
(OP)
Hello!
Iam a stress engineer and I am modeling the cockpit door of an helicopter. I need to include the window in my model as structural. I think that the best way to connect the window surface with the main door structure is with bush elements (that can simulate the window seal). Could you give me an advice? Is that the correct way? And what value for the bush spring constants do I have to use?
Thank you very much
Iam a stress engineer and I am modeling the cockpit door of an helicopter. I need to include the window in my model as structural. I think that the best way to connect the window surface with the main door structure is with bush elements (that can simulate the window seal). Could you give me an advice? Is that the correct way? And what value for the bush spring constants do I have to use?
Thank you very much





RE: FE Model of a cockpit door window
RE: FE Model of a cockpit door window
Glass is technically a liquid in the molecular level; meaning that it does not have an ordered molecular structure. So including in a FEA model can work out to be a nightmare.
Taking the science out of rocket science...One step at a time.
RE: FE Model of a cockpit door window
RE: FE Model of a cockpit door window
"
Oh well, that must explain the problems we have with modelling car bodyshells, where the glass is a substantial proportion of the weight and stiffness.
Not.
Cheers
Greg Locock
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RE: FE Model of a cockpit door window
If it is some sort of elastomeric joint, then you may need some test data of the joint in order to determine the correct spring stiffness; and it may be a non-linear response. Otherwise, run the FEM with a wide range of stiffness values and see what the effect is on the structure's deformation and stresses.
RE: FE Model of a cockpit door window
RE: FE Model of a cockpit door window
RE: FE Model of a cockpit door window
I'd deal with the door structure as posted above; the door is going to feel the point loads around the perimeter of the window. This assumes that the window pane is effectively pinned into the frame.
The window pane would then be a flat, thick panel under pressure, with a pinned support at the perimeter, this should be a Roark solution.