کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6915709 1447405 2018 43 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A large deformation hybrid isogeometric-finite element method applied to cohesive interface contact/debonding
ترجمه فارسی عنوان
یک روش عنصر ایزوگومتریک محدود برای تغییر شکل بزرگ اعمال شده برای اتصال رابط / انعطاف پذیر یکپارچه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
A hybrid NURBS-based isogeometric-finite element discretization technique is presented to take advantages of IGA for problems with regions demanding higher geometric accuracy or interpolation order. The validity of this coupled discretization is tested through standard patch test. Also, for demonstrative purposes, the proposed methodology is then applied to 2D interface contact/debonding of fiber-matrix as well as a 2D double cantilever beam peeling problem. Adopting a novel approach, the mortar method is used to account for both cohesive behavior and non-penetration constraint in the interface. Non-penetration constraint is enforced via Lagrange multiplier technique along with a mixed-mode cohesive law. The validity of the proposed unified contact/debonding formulation is tested against a contact/tension patch test. The stress contours after simulations show a smooth variation across IG and FE domains further demonstrating the coupling's eligibility. Moreover, smooth contact pressure distributions are obtained along the interfaces resulting from higher-order NURBS basis functions. Having significantly less DOFs, the hybrid IG-FE discretization also behaved more robustly compared with linear FEs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 330, 1 March 2018, Pages 395-414
نویسندگان
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