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Problem when doing Modal analysis of the thin plate fabricated from different materia

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Old   April 2, 2014, 22:56
Default Problem when doing Modal analysis of the thin plate fabricated from different materia
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Vang Hoang My
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Hi everyone.
I'm a beginner user in ANSYS.
Now I'am modeling a thin plate that plate includes vein and membrane parts. Vein's made from carbon-epoxy fiber, meanwhile membrane's made from thin film material.
I simulate it in ANSYS Modal analysis to estimate the mode shapes and natural frequencies.
I get results then compare with the experiment results.
Its natural frequency values is close to the experiment results, but mode shapes are not.^o)
I've already assign material properties into plate model exactly.
Anyone has experience in this aspect, please help me find out the reason why the different results happen?
Thank you for your help.
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carbon epoxy, modal analysis, thin film

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