کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9704715 1464182 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on type II structures. Part II:
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A study on type II structures. Part II:
چکیده انگلیسی
From the energy-absorption point of view, in general a cellular material may be composed of a number of type I and type II cells. A comprehensive study of the mechanisms, by which these two types of cells undergo large deformation under impact loading, will help to deepen our understanding of the dynamic behavior of cellular materials. In this paper, special attention is paid to the dynamic response of a chain of type II cells under a projectile impact. Both the FE analysis and the equivalent mass-spring model proposed in part I of the paper are employed, and the results agree well with each other while the mass-spring model is much more efficient than the FE simulation. Three collapse modes of type II chain are identified, depending on the initial impact velocity. Furthermore, based on the equivalent mass-spring model, the local contact behavior between the striker and the first cell of the type II chain, and the effects of the associated parameters (e.g., the effects of cell number, cell wall inertia, mass ratio, input energy, etc.) are discussed in detail.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Impact Engineering - Volume 31, Issue 7, August 2005, Pages 911-926
نویسندگان
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