کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6706144 | 502913 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of gaps and overlaps on the buckling behavior of an optimally designed variable-stiffness composite laminates - A numerical and experimental study
ترجمه فارسی عنوان
اثرات شکافها و همپوشانی بر روی رفتار لرزه ای یک ورقه کامپوزیت متغیر مقاومتی طراحی شده - یک مطالعه عددی و تجربی
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کلمات کلیدی
قرار دادن فیبر خودکار، خم شدن فاصله ها / همپوشانی، ورقه های کامپوزیت متغیر سختی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper reports an experimental and numerical investigation of the effects of gaps and overlaps on the buckling behavior of variable-stiffness composite laminates. In the experimental study, variable-stiffness composite laminates with a constant-curvature fiber path were manufactured and tested under uniaxial compression to failure with simply supported edges. The tested panels were optimized to simultaneously maximize the in-plane stiffness and the buckling load. Two manufacturing strategies - complete overlaps and complete gaps - were adopted to allow the independent effect of each type of defect to be investigated in isolation. In the numerical study, a two-dimensional finite element model was built using the commercial software Abaqus through a Python input script. A MATLAB routine was also implemented to localize the gaps and overlaps within the studied variable-stiffness laminates. A linear buckling analysis was performed to calculate the pre-buckling strength and the critical buckling load for each tested composite laminate. Thereafter, a nonlinear analysis using the Riks method was performed to predict the load-displacement relationship, considering the geometric imperfections of cured composite laminates. A good correlation was observed between the results obtained from the finite element simulations and from the experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 140, 15 April 2016, Pages 556-566
Journal: Composite Structures - Volume 140, 15 April 2016, Pages 556-566
نویسندگان
A. Marouene, R. Boukhili, J. Chen, A. Yousefpour,