توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱INVESTIGATION ON THE EFFECT OF VISCOELASTICITY ON NATURAL FREQUENCY IN CYLINDRICAL SANDWICH PANEL USING FEM
نویسنده(ها): ، ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی مواد پیشرفته، سال
تعداد صفحات: ۶
Sandwich panels are present in many engineering structures specifically where the high ratio of strength to the weight is recommended. Application of sandwich panels with viscoelastic core with high damping properties will tend to better flexural strength and dynamic behaviors and sound insolation. The main aspect of present text is sensitivity analysis of natural frequencies of cylindrical sandwich panels about changing viscoelastic properties. Modeling and FEM analysis and proceeding data gathering were accomplished using ABAQUS\CAE (R). Acquired results have been verified by comparison with governing theory of sandwich shells and plates and errors between different theories and FEM has been identified. In this paper, effect of viscoelastic properties and composite lay–up and boundary condition has been brought into account<\div>

۲Optimization of Composite Rocket Launcher Using GA
اطلاعات انتشار: اولین کنفرانس بین المللی مواد پیشرفته، سال
تعداد صفحات: ۴
Nowadays, as is well known, optimized composite materials are employed in many constructions when high strength to weight ratio and increasing the section rigidity of the light weight structures and ease of manufacturing are required. In this paper, new optimization method of graphite–epoxy composite cylindrical shell, under thermo mechanical loading is done by MATLAB SOFTWARE coding in GENETIC algorithm method to decrease weight of structure in satisfactory limit. The completely mathematical method of composite layup is reached by using of approximately approach analysis of long shells and plates. The failure criterion of Composite materials is T–SaiHill. Final results of analysis forobtain the critical points of rocket shooting, are done by ABAQUS SOFTWARE<\div>
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