کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277103 1430201 2016 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Equivalent in-plane elastic properties of irregular honeycombs: An analytical approach
ترجمه فارسی عنوان
معایب خواص الاستیکی هواپیما نامنظم در هواپیما: رویکرد تحلیلی
کلمات کلیدی
لانه زنبوری نامنظم، ماژول انعطاف پذیر، ساختار سلولی، زاویه سلولی تصادفی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

An analytical formulation has been developed in this article for predicting the equivalent elastic properties of irregular honeycombs with spatially random variations in cell angles. Employing unit-cell based approaches, closed-form expressions of equivalent elastic properties of regular honeycombs are available. Closed-form expressions for equivalent elastic properties of irregular honeycombs are very scarce in available literature. In general, direct numerical simulation based methods are prevalent for this case. This paper proposes a novel analytical framework for predicting equivalent in-plane elastic moduli of irregular honeycombs using a representative unit cell element (RUCE) approach. Using this approach, closed-form expressions of equivalent in-plane elastic moduli (longitudinal and transverse Young’s modulus, shear modulus, Poisson’s ratios) have been derived. The expressions of longitudinal Young’s modulus, transverse Young’s modulus, and shear modulus are functions of both structural geometry and material properties of irregular honeycombs, while the Poisson’s ratios depend only on structural geometry of irregular honeycombs. The elastic moduli obtained for different degree of randomness following the proposed analytical approach are found to have close proximity to direct finite element simulation results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 91, August 2016, Pages 169–184
نویسندگان
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