http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이재환(Jae-Hwan Lee),장강석(Kang-Suck Jang),신민용(Min-Yong Shin) 한국해양공학회 1997 韓國海洋工學會誌 Vol.11 No.1
In this paper, design sensitivity of plate natural frequency is computed for thickness design variables. Once the variational equation is derived from Lagrange equation using the virtual displacement, governing energy bilinear form is obtained and sensitivity equation is formulated through the first variation. Natural frequency is obtained using the commercial FEM code and the accuracy of sensitivity is verified by finite difference. The accuracy of natural frequency and sensitivity improves for the fine mesh model.