کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
788167 1465383 2009 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Propagation of a stress wave through a virtual functionally graded foam
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Propagation of a stress wave through a virtual functionally graded foam
چکیده انگلیسی

Stress wave propagation through a Functionally Graded Foam Material (FGFM) is analysed in this paper using the finite element method. A finite element model of the Split Hopkinson Pressure Bar (SHPB) is developed to apply realistic boundary conditions to a uniform density foam and is validated against laboratory SHPB tests. Wave propagation through virtual FGFMs with various gradient functions is then considered. The amplitude of the stress wave is found to be shaped by the gradient functions, i.e., the stress can be amplified or diminished following propagation through the FGFMs. The plastic dissipation energy in the specimens is also shaped by the gradient functions. This property of FGFMs provides significant potential for such materials to be used for cushioning structures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Non-Linear Mechanics - Volume 44, Issue 5, June 2009, Pages 456–468
نویسندگان
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