کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
280119 1430386 2006 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-axial failure of metallic strut-lattice materials composed of short and slender struts
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Multi-axial failure of metallic strut-lattice materials composed of short and slender struts
چکیده انگلیسی

Results of a parametric investigation on the failure of metallic strut lattices subjected to multi-axial loads are presented. The study involves two microscopic parameters related to the geometry of struts: strut-level strengthening and slenderness ratios. The strengthening procedure is designed such that minimum-strengthening represents the octetruss while maximum-strengthening represents the three-dimensional Warren truss. This way, the effects of both strut-level stretching and bending on the deformation responses together with coupled failure due to plastic yield and elastic buckling can be studied. The evaluated theoretical failure envelopes that include microscopic global and localized failure compare well with the numerical failure data obtained from finite element analysis. Among results, while the strengthening and slenderness ratios expectedly influence the sizes and shapes of the failure surfaces, they also dramatically alter microscopic deformation mechanisms leading to macroscopic failure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 43, Issue 20, October 2006, Pages 6115–6139
نویسندگان
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