کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4917685 1428527 2017 40 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design, manufacturing and testing of a fibre steered panel with a large cut-out
ترجمه فارسی عنوان
طراحی، ساخت و آزمایش یک پانل های فیبر با برش بزرگ
کلمات کلیدی
ورق سفتی متغیر، فرمان فیبر، استحکام، معیشت شکست غلظت تنش،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Variable stiffness composites, where fibre angles are spatially varied by steering the tows in curvilinear paths to optimise the structural response, have been a subject of intensive study. In this paper, experimental validation of the variable stiffness composite technology is carried out for a panel representing a wing lower-skin with a large access hole designed against material failure. An idealised flat panel with a large cut-out under tension or combined tension and shear is modeled using finite elements. In addition to a quasi-isotropic laminate, constant stiffness and variable stiffness laminates are designed to maximise the failure load using a multi-step optimisation framework. Three panels, one for each type of laminate, are built from thermoset prepreg material using automated fibre placement. All three panels are tested in pure tension. The failure loads, failure modes and weights of the tested panels are compared. The results indicate that the variable stiffness laminate is capable of sustaining significantly larger loads, before failure, than the constant stiffness and quasi-isotropic laminates of equal weight.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 180, 15 November 2017, Pages 821-830
نویسندگان
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