توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Application of Neural Network and FEM to Optimize Load Path of T–shape Tube Hydro Forming
نویسنده(ها): ، ،
اطلاعات انتشار: دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۹
During tube hydroforming (THF) process, failure modes such as buckling, necking and bursting may occur because axial feeding and internal pressure are imposed simultaneously. As load path has great influence on THF, prediction of properties of final product is difficult and a time consuming work. In this study, Neural Network algorithm and ANSYS LS–DYNA and ANSYS Program Language Design (APDL), was used to predict final product properties of T– shapebranch workpiece. FE model and Neural Network were verified using experimental result for a determined load path. Finally direct search method has been used to obtain optimum load path for higher formability.<\div>

۲An analytical study based on higher order shear and normal deformation theory on the buckling of rectangular thick functionally graded plate coupled with piezoelectric layers
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس ملی مهندسی مکانیک ایران، سال
تعداد صفحات: ۱۵
In this thesis, the buckling of multilayer rectangular plate made of functionally graded, transversely isotropic and piezoelectric materials in both closed and open circuit conditions are investigated. Based on the higher–order shear and normal deformable plate theory, the governing equilibrium equations are obtained using the principle of minimum total potential energy and Maxwell’s equation. In order to obtain the stability equations, the adjacent equilibrium criterion is used. The stability equations are then solved analytically, assuming simply support boundary condition along all edges. Finally, following the validation of the results, numerical results for compressible materials are presented. Also, the effects of different parameters such as different loading conditions, functionally graded power law index, thickness–to–length ratio and aspect ratio, on the critical buckling loads of plates are studied in details. Furthermore, the effect of piezoelectric thickness on the plate critical buckling loads has been studied<\div>
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