کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
309346 513599 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of vacuum-induced buckling pressures of thin-walled cylinders
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Prediction of vacuum-induced buckling pressures of thin-walled cylinders
چکیده انگلیسی

The effect of geometric imperfections on the buckling capacity of thin cylindrical shells subjected to uniform external pressure is investigated in this paper. Geometric surveys were conducted on small-scale thin cylinders in order to measure geometric imperfections of the shell surface. These imperfections were then modelled in the FE analysis and a geometrically nonlinear static analysis was carried out. The cylinders are tested to collapse in the laboratory and the results are compared to the results of the FE analysis. Both collapse pressure and postbuckling mode shape are accurately predicted by the FE analysis.


► Geometric imperfections cause significant reduction in buckling pressures of thin shells.
► Geometric nonlinear FE analysis carried out and compared to experimental results.
► FE accurately predicts buckling pressures as well as buckling mode shape.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 55, June 2012, Pages 1–10
نویسندگان
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