کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6777744 1432064 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linear and nonlinear elastic buckling of stereolithography resin egg-shaped shells subjected to external pressure
ترجمه فارسی عنوان
پوسته شدن خطی و غیر خطی استریولیتوگرافی پوسته های شکل تخم مرغ تحت فشار خارجی
کلمات کلیدی
خم شدن پوسته تخم مرغی شکل، فشار خارجی، نقص هندسی، نمونه سازی سریع،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study explored the elastic buckling of egg-shaped shells made of stereolithography resin. The shells had identical nominal geometry parameters with the thickness of 2 mm, the major axis of 232 mm, and the minor axis of 160 mm, respectively. Five near-perfect laboratory-scale models were fabricated using stereolithography appearance (SLA), a rapid prototyping technique. Each model was scanned by a three-dimensional optical scanner, measured using a micrometer, and tested in a pressure chamber. The buckling behaviours of egg-shaped shells with deterministic geometric imperfections were experimentally, analytically, and numerically analysed. The perfect egg-shaped shell was also compared with the fabricated egg-shaped models. A good agreement among them was obtained. The remarkable experimental results of egg-shaped shells were presented in this paper by using 3D printing technologies, which shows the high machining accuracy of 3D printing technologies and provides a new solution for the limitation of experimental study into non-typical shells of revolution. Also, the study could provide a new non-typical shell structure and its stability evaluation approach for space vehicles, pressure tanks, and pressure hulls.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 127, June 2018, Pages 516-522
نویسندگان
, , , ,