کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6924598 | 865739 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimization of a cylindrical shell housing a belt-conveyor bridge
ترجمه فارسی عنوان
بهینه سازی یک پوسته استوانه ای در یک پل تسمه نقاله
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کلمات کلیدی
بهینه سازی ساختاری، خم شدن مفاصل جوش هزینه ها، طراحی مبتنی بر قابلیت اطمینان،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
A belt-conveyor bridge is built inside a ring-stiffened cylindrical shell, the belt-conveyor supports being independent of the stiffeners. Reliability-based and deterministic optimization results are compared. The design variables are the shell thickness as well as the thickness and the number of flat rings. Optimum solutions are evaluated for different bridge lengths in view of finding the most effective cost/span ratios. The design constraints relate to the local shell buckling strength, to the panel ring buckling and to the deflection of the bridge. The cost function includes the material and fabrication costs. A level II reliability method (FORM) is used to find the probability of failure. The overall structural reliability is obtained by using Ditlevsen method of conditional bounding. The costs of the plate designed to ensure a stipulated probability of failure will be compared with the solutions obtained for a code based method, which employs partial safety factors. A branch and bound strategy coupled with a entropy-based algorithm is used to provide discrete solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 147, 15 January 2015, Pages 159-164
Journal: Computers & Structures - Volume 147, 15 January 2015, Pages 159-164
نویسندگان
Luis M.C. Simões, József Farkas, Károly Jármai,