{"id":158903,"date":"2021-05-27T09:36:03","date_gmt":"2021-05-27T09:36:03","guid":{"rendered":"\/forum\/forums\/topic\/simulating-the-bending-deforming-of-a-flat-thin-silicon-layer-into-a-spherical-geometry\/"},"modified":"2021-08-03T12:23:23","modified_gmt":"2021-08-03T12:23:23","slug":"simulating-the-bending-deforming-of-a-flat-thin-silicon-layer-into-a-spherical-geometry","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulating-the-bending-deforming-of-a-flat-thin-silicon-layer-into-a-spherical-geometry\/","title":{"rendered":"Simulating the bending\/deforming of a flat, thin silicon layer into a spherical geometry"},"content":{"rendered":"
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Hi,<\/p>\n

 <\/p>\n

I would like to simulate the bending or rather spherical deformation of a very thin silicon layer. I have a glass substrate at the bottom with a spherical cavity (concave) on which the silicon in placed. In the beginning only the four corners of the silicon layer will be in contact with the substrate. A tool with a convex surface presses down on the silicon surface and deforms it into spherical shape.<\/p>\n

I tried to begin with a explicit dynamic simulation but the tool moves only when I specify a very high initial velocity and I get very high stress in the silicon.<\/p>\n

Can someone describe how this simulation can be setup? I am mostly interested in the stress after the deformation process which I can later measure after the deformation with a Raman spectrometer.<\/p>\n

 Attached is an archive file for reference.<\/p>\n

Any suggestions are most welcome.<\/p>\n

 <\/p>\n

Best regards,<\/p>\n

Amit<\/p>\n

PS: For the first simulation I am not simulating the adhesive layer between the silicon and the substrate. There is an additional process in between where the deformed silicon is held under force and the system is heated to complete the adhesive bonding process.<\/p>\n

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\nSilicon_bending_Test.wbpz
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