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error in matching 2d & 3d results of same model.

Posted 9 avr. 2015, 07:22 UTC−4 RF & Microwave Engineering, Results & Visualization, Structural Mechanics Version 5.0 3 Replies

Yoginder Kumar
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hello sir, i am designing the resonator structure using piezoelectric module. i designed the device and plotted all required results but my problem is that i designed the devise in both 2d and 3d model with same dimensions and boundary counditions but the resultant frequency is shifted much more then it can be???
how to resolve the problem plzzz help.........
is there any one who faces same problem or having the solution???????
3 Replies Last Post 16 avr. 2015, 08:27 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 10 years ago 9 avr. 2015, 11:54 UTC−4
Hi
normally you see very little differences between 2-3D typically below 5-10%
One of the common mistakes is to forget to set the correct depth ".d" in 2D or to miss some BC's i.e. expressed in densities instead of absolute values...
--
Good luck
Ivar
Hi normally you see very little differences between 2-3D typically below 5-10% One of the common mistakes is to forget to set the correct depth ".d" in 2D or to miss some BC's i.e. expressed in densities instead of absolute values... -- Good luck Ivar
Yoginder Kumar
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Posted: 10 years ago 10 avr. 2015, 00:06 UTC−4
hello sir
whats the meaning of d is here n how can i set it if my dimensions are:
2D- 100*2
3D- 100*100*2
what dimension of d is to be defined in this case?????
hello sir whats the meaning of d is here n how can i set it if my dimensions are: 2D- 100*2 3D- 100*100*2 what dimension of d is to be defined in this case?????
Yoginder Kumar
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Posted: 10 years ago 16 avr. 2015, 08:27 UTC−4
hey is there anybody who can help me.
dear ivar the depth you told me does not work for my problem is there any other reason??????
hey is there anybody who can help me. dear ivar the depth you told me does not work for my problem is there any other reason??????

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