کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9703104 1463257 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new quasi-continuum constitutive model for crack growth in an isotropic solid
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A new quasi-continuum constitutive model for crack growth in an isotropic solid
چکیده انگلیسی
A new quasi-continuum constitutive model is established based on the randomized cohesive bonds model proposed by Gao and Klein (1998). This model bridges the microscopic discrete constitution characters and the macroscopic mechanical properties of material. In the presented constitutive model, both the bond stretch energy potential and the rotation energy potential are considered, which makes the presented constitutive model applicable to different Poisson-ratio and Young's modulus materials. By establishing a phenomenological bond stiffness function according to the complete stress-strain relationship of uniaxial tension test, the fracture criterion is directly incorporated into the constitutive model. The method requires no external fracture criterion when simulating fracture initiation and propagation, which brings convenience in the numerical simulation. At last, the presented constitutive model is applied to an example of crack growth in an isotropic solid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - A/Solids - Volume 24, Issue 2, March–April 2005, Pages 243-252
نویسندگان
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