کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498335 862987 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An adaptive finite element material point method and its application in extreme deformation problems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
An adaptive finite element material point method and its application in extreme deformation problems
چکیده انگلیسی

Taking advantages of both Lagrangian and Eulerian methods, material point method (MPM) is suitable for modeling problems with extreme deformation. However, MPM is less accurate and less efficient than finite element method (FEM) for small deformation problems due to particle quadrature and mappings between particles and background grid applied in MPM. To take advantages of both FEM and MPM, an adaptive finite element material point method is developed for modeling the dynamic behavior of material under extreme loading. Bodies are initially discretized by finite elements, and then the elements with large strain are adaptively converted into MPM particles based on their degree of distortion or plastic strain during the solution process. The interaction between the remaining finite elements and MPM particles is implemented based on the background grid in MPM framework. Several numerical examples are presented to validate the efficiency and accuracy of the proposed method, and the numerical results are in good agreement with experiments, while the efficiency of the method is higher than that of both MPM and FEM.


► An adaptive finite element material point (AFEMP) method is developed which takes full advantages of both FEM and MPM.
► A conversion algorithm for elements to MPM particles is proposed.
► A transition node thought is proposed to let elements nodes interact with MPM particles.
► The efficient of AFEMP method is higher than that of both FEM and MPM.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volumes 241–244, 1 October 2012, Pages 275–285
نویسندگان
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