Calculating the effective material constant for multigrain orthotropic polysilicon by the boundary element method |
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Authors: | Sang-Hoon Lee Il-Jung Jeong Ji-Won Park and Seok-Soon Lee |
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Abstract: | The reliability and safety of MEMS parts are important factors in industrial MEMS applications. Most MEMS parts are made from
multigrain polysilicon, an orthotropic material with random material direction. Analyzing the stress and displacement and
knowing the effective material constant are important when using MEMS in industrial applications. We developed a computer
program to calculate the effective material constant of polysilicon using the boundary element method with the microstructure
evolution method. The results obtained using the boundary element method were compared to those obtained using the finite
element method to confirm the validity of the program. |
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