کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4928533 | 1432072 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Computation of plastic collapse capacity of 2D ring with random pitting corrosion defect
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper is aimed at assessing the effects of local random pitting corrosions on the collapse pressure of a 2D ring under external pressure. A Python program was used in combination with the FE code ABAQUS to solve the FE model. Firstly, a series of non-linear FE analysis of rings were carried out to study the influence of such random pitting factors, as diameter-to-depth ratio, distribution form, and pitting number. This indicated that the mass loss and maximum pitting depth were the main factors that govern the collapse pressure of 2D ring. A high-order buckling mode was found with higher collapsed pressure under specific combination of random pitting corrosion factors, which turned out to be the snap-through of archer beam. Finally, a closed form formula able to predict the collapse pressure of a 2D ring with 2-wave form out-of-roundness and random pitting defects was established by nonlinear regression analysis of FE results with consideration of mass loss, maximum pitting depth, diameter-to- thickness ratio (D/t) as well as out-of-roundness (â³).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 119, October 2017, Pages 727-736
Journal: Thin-Walled Structures - Volume 119, October 2017, Pages 727-736
نویسندگان
Jianxing Yu, Huakun Wang, Zhiyuan Fan, Yang Yu,