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membrane under stress

Posted Sep 9, 2023, 12:44 p.m. EDT Structural Mechanics Version 6.1 1 Reply

Munkyeong Jeong
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Hi!

I am calculating the eigen frequency of Si3N4 membrane. The membrane is 2mm * 2mm and the thickness is 50 nm. This membrane is fixed to the frame. Therefore, I fixed the four edges with fixed constraints. At this time, the stress applied to the membrane is 1GPa, but I do not know how to apply this to COMSOL. I've tried applying tension to the edge with a boundary load, but this doesn't change the result with or without tension. *Maybe I'm a beginner and don't know the basics well.

thank you!

1 Reply Last Post Sep 10, 2023, 5:47 a.m. EDT
RAJA KUMAR Acoustics & Vibration
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Posted: 8 months ago Sep 10, 2023, 5:47 a.m. EDT

Hello, use initial stress

even this doesnot help mail me, may be i can help. iamrajakr@gmail.com

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iamrajakumar@iitkgp.ac.in
iamrajakr@gmail.com
Hello, use initial stress even this doesnot help mail me, may be i can help. iamrajakr@gmail.com

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