کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
251666 502940 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multiscale reliability analysis of a composite stiffened panel
ترجمه فارسی عنوان
تجزیه و تحلیل قابلیت اطمینان چند متغیری از یک پانل سفت شده کامپوزیت
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

A method for performing reliability analysis of a composite stiffened panel subjected to axial compression using the finite element method is discussed. Three-dimensional shell and brick element models are utilized for baseline response prediction, and comparison with experimental results. Owing to the multiscale nature of composite materials, microscale and macroscale design parameters are identified for the panel. The microscale parameters consist of fiber⧹⧹matrix properties and the volume fraction. The macroscale parameters consist of structural dimensions, layup definition, and an imperfection scale factor. The fiber and matrix properties are estimated utilizing a micromechanics model in conjunction with an optimization method. Thereafter, parameterized finite element models are used to generate an approximation model. Utilizing the Monte Carlo method, design parameters were subject to variation and the variation in response was predicted using the approximation model along with the probability of failure measured against experimental results and baseline finite element responses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 116, September–October 2014, Pages 432–440
نویسندگان
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