کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
499322 863039 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analytical CPP in energy-mapped stress space: Application to a modified Drucker–Prager yield surface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Analytical CPP in energy-mapped stress space: Application to a modified Drucker–Prager yield surface
چکیده انگلیسی

In conventional stress space, the closest point projection (CPP) of computational plasticity in general does not provide the closest point in a Euclidean sense but rather in an energy metric. As an alternative, this contribution discusses an energy-mapped stress space such that CPP is indeed the closest point in a strict Euclidean sense. This perspective clarifies which yield surfaces can be handled analytically: analytical solutions are possible if the CPP can be expressed as a polynomial of order 4 or less. This is demonstrated by means of a modified Drucker–Prager yield surface in which the hydrostatic tensile apex is removed through the use of hyperbolic meridians.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 198, Issues 5–8, 15 January 2009, Pages 853–859
نویسندگان
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