کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1564359 999643 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A three-invariant cap plasticity with isotropic-kinematic hardening rule for powder materials: Model assessment and parameter calibration
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
A three-invariant cap plasticity with isotropic-kinematic hardening rule for powder materials: Model assessment and parameter calibration
چکیده انگلیسی
The constitutive modeling of powder is clearly a keystone of successful quantitative solution possibilities. Without a reasonable constitutive model, which can reproduce complicated powder behavior under loading conditions, the computations are worthless. In this paper, a three-invariant cap plasticity model with isotropic-kinematic hardening rule is presented for powder materials. A generalized single-cap plasticity is developed which can be compared with some common double-surface plasticity models proposed for powders in literature. The hardening rule is defined based on the isotropic and kinematic material functions. The constitutive elasto-plastic matrix and its components are derived by using the definition of yield surface, material functions and nonlinear elastic behavior, as function of hardening parameters. The procedure for determination of material parameters is described. Finally, the applicability of the proposed model is demonstrated in numerical simulation of triaxial and confining pressure tests.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 41, Issue 1, November 2007, Pages 1-12
نویسندگان
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