کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
253137 502987 2017 8 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Experimental studies on mechanical properties of cellular structures using Nomex® honeycomb cores
ترجمه فارسی عنوان
مطالعات تجربی بر روی خواص مکانیکی ساختارهای سلولی با استفاده از هسته لانه زنبوری Nomex®
کلمات کلیدی
آزمایش؛ انطباق؛ Nomex®؛ هسته لانه زنبوری. فشار؛ نژاد
Experiment; Compliance; Nomex®; Honeycomb core; Stress; Strain
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

An experimental method is presented to obtain the effective in-plane compliance matrices of cellular structures using Nomex® honeycomb cores without a priori assumptions such as orthotropy. In this method, firstly, uni-axial tension tests are carried out for different material orientations. The independent variables in these experiments are the material orientation and displacement of the actuator, while the main dependent variables are positions of the marker points and the force acting on the specimens. Marker tracking technique is used to determine the marker positions which are processed to get strain of the measuring domain, while the stress is estimated through external loading and core geometry. The analysis is confined to the measuring domain under near homogeneous stress and strain fields. The experiment results are processed with transformation and least squares functions to obtain all effective in-plane elastic parameters, which are compared with analytical solution based on deformation of idealized cell structure. Through this comparison, the effects of geometrical parameters of cell structure are discussed in detail. By means of the introduced method, the problem of lack of experimental studies on the effective in-plane compliances of cellular structures in the literature is expected to be solved.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 94, Issue 6, May 2012, Pages 2017–2024
نویسندگان
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