کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
800276 | 1467460 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A constitutive model for porous solids taking into account microscale inertia and progressive void nucleation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present paper, a micromechanical constitutive framework for ductile voided solids sustaining dynamic loading is proposed. The micro-inertia based model proposed by Jacques et al. (2012a) has been extended by taking void nucleation into account. To capture the combined effects of microscale inertia and void nucleation, a micro-mechanical model of damage is proposed. This model is based on three physical parameters: the porosity, the number of voids per unit volume and an internal variable aiming to represent the effect of void size heterogeneity. The evolution equations for these internal variables are derived and an application to the failure of an axisymmetric notched bar is presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 80, Part B, January 2015, Pages 311–323
Journal: Mechanics of Materials - Volume 80, Part B, January 2015, Pages 311–323
نویسندگان
N. Jacques, S. Mercier, A. Molinari,