vidiii
Industrial
- Nov 13, 2006
- 36
Hi,
I'm using different methods in the flexible dynamics of ANSYS workbench to obtain a movement of a plate (that is clamped on one side and free on the other side, see: ) in the first bending mode, by:
1) applying a pressure on one side of the plate, and releasing it shortly after
2) applying a pressure function = (amplitude*sinus(time*360*frequency))
In the first case the plate will move in resonance, but I can only control the resonance by changing the material properties of the plate, and the deformation is damped, so after 3 oscillations it almost doesn't move anymore.
In the second case the plate pressure frequency can be controlled, however it never matches the resonance frequency of the plate, so interference is created (amplitude will increase, and decrease, see: ).
The movement of the plate (first bending mode) is going to be used in ANSYS CFX for fluid structure interaction. So the solution must be a time history solution like flexible dynamics.
My question: is there a way to exactly define the deformation of the plate in the first bending mode, in ANSYS Workbench (eventually flexible dynamics), and being able to follow a function (like amplitude*sinus(time*2*360*frequency)? Any idea is useful. Hope to hear your comments and hints.
Thanks in advance.
I'm using different methods in the flexible dynamics of ANSYS workbench to obtain a movement of a plate (that is clamped on one side and free on the other side, see: ) in the first bending mode, by:
1) applying a pressure on one side of the plate, and releasing it shortly after
2) applying a pressure function = (amplitude*sinus(time*360*frequency))
In the first case the plate will move in resonance, but I can only control the resonance by changing the material properties of the plate, and the deformation is damped, so after 3 oscillations it almost doesn't move anymore.
In the second case the plate pressure frequency can be controlled, however it never matches the resonance frequency of the plate, so interference is created (amplitude will increase, and decrease, see: ).
The movement of the plate (first bending mode) is going to be used in ANSYS CFX for fluid structure interaction. So the solution must be a time history solution like flexible dynamics.
My question: is there a way to exactly define the deformation of the plate in the first bending mode, in ANSYS Workbench (eventually flexible dynamics), and being able to follow a function (like amplitude*sinus(time*2*360*frequency)? Any idea is useful. Hope to hear your comments and hints.
Thanks in advance.