کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
802693 1467449 2015 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effective elastic properties of periodic hexagonal honeycombs
ترجمه فارسی عنوان
خواص الاستیسیته موثر در عضلات شش ضلعی دوره ای
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Analyzed effect of node region on elastic properties, analytically and numerically.
• Obtained more accurate predictions for elastic properties of hexagonal honeycombs.
• Both analytical and numerical results describe experimental data well.
• At high relative densities the effect of the nodes becomes significant.

We investigate the elastic behavior of periodic hexagonal honeycombs over a wide range of relative densities and cell geometries, using both analytical and numerical approaches. Previous modeling approaches are reviewed and their limitations identified. More accurate estimates of all nine elastic constants are obtained by modifying the analysis of Gibson and Ashby (1997) to account for the nodes at the intersection of the vertical and inclined members. The effect of the nodes becomes significant at high relative densities. We then compare the new analytical equations with previous analytical models, with a numerical analysis based on a computational homogenization technique and with data for rubber honeycombs over a wide range of relative densities and cell geometries. The comparisons show that both the new analytical equations and numerical solutions give a remarkably good description of the data. The results provide new insights into understanding the mechanics of honeycombs and designing new cellular materials in the future.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 91, Part 1, December 2015, Pages 226–240
نویسندگان
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