دانلود مقاله ISI انگلیسی شماره 64458
عنوان فارسی مقاله

طراحی هندسی و خواص مکانیکی سازه های ساندویچ استوانه هسته برابر

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
64458 2015 15 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Geometric design and mechanical properties of cylindrical foldcore sandwich structures
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Thin-Walled Structures, Volume 89, April 2015, Pages 116–130

کلمات کلیدی
سازه ساندویچ استوانه ای - طراحی هندسی - تجزیه و تحلیل المان محدود - هسته برابر
پیش نمایش مقاله
پیش نمایش مقاله طراحی هندسی و خواص مکانیکی سازه های ساندویچ استوانه هسته برابر

چکیده انگلیسی

Sandwich structures with foldcores are regarded as a promising alternative to conventional honeycomb sandwich structures as lightweight structural materials. One of the proposed applications of foldcore sandwich structures is on the aircraft fuselage and the interstage of a rocket. While flat foldcore sandwich structures have been intensively studied in the literature, there lacks a general design tool to create foldcores for a given cylindrical sandwich structure and the mechanical properties of such structures have not been well investigated. In this paper, a geometrical design protocol for foldcores that will fit into the space between the external and internal walls of a given cylindrical sandwich structure is developed based on the vertex method. A parametric study on the mechanical properties of several selected cylindrical foldcore models and a honeycomb core model virtually tested in axial compression, internal pressure and radial crush using the finite element method is performed. It is shown that foldcores outperform the honeycomb core model in axial compression and radial crush but have lower radial stiffness when subjected to internal pressure. The design protocol together with the virtual test results can serve as a useful tool for researchers to design cylindrical foldcore sandwich structures for many potential applications including but not limited to aircraft fuselage, submarine shell and other pressurized cylinders.

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