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Meshfree local integration on line method (MLILM) for linear elasticity
Joint Authors
Kani, Iradj Mahmud Zadah
Sadeghirad, Ali Rida
Astaneh, Ali Vaziri
Rahimian, Muhammad
Source
The Arabian Journal for Science and Engineering. Section B, Engineering
Issue
Vol. 33, Issue 2B (31 Oct. 2008), pp.411-434, 24 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
2008-10-31
Country of Publication
Saudi Arabia
No. of Pages
24
Main Subjects
Topics
Abstract AR
سوف نعرض- في هذا البحث-طريقة (MLILM) لحل مسائل الليونية ثنائية الأبعاد.
وقد طورنا لهذا الغرض فكرة عدم التماثل الموضعي باستخدام طريقة المتبقي الموضعي الوزني (LUWF) من خلال معادلة الاتزان.
تكون المجالات (المناطق) الموضعية-في هذا الطريقة-رباعية الزوايا و اقترانات الاختبار هرمية تتمركز على عقد المجال.
و عند تطبيق (LUWF) على مجموعة منتقاه من اقترانات الاختبار تمكنا من حذف تكاملات المجالات عند حساب مصفوفة قساوة النظام.
وقد اقترحنا طريقة (LWLS) لإنشاء اقترانات اختبارية و أوضحنا فعاليتها و دقتها.
و بما أن أسلوب (MLILM) لا يتطلب حساب مشتقات الاقترانات الاختبارية فإن ذلك أدى إلى عدم الحاجة إلى اشتقاق تقريب (LWLS) للإزاحة.
وقد أبانت الحسابات أن (MLILM) فعالة و تؤدي إلى نتائج دقيقة.
Abstract EN
The mesh free local integration on line method (MLILM) is presented for solving two-dimensional problems in linear elasticity.
For this purpose, local unsymmetrical weak forms (LUWF) are developed using weighted residual method locally from the equilibrium equations.
In this method, local domains are quadrangles and the test functions are pyramids centered on domain nodes.
Application of the LUWF based on these deliberately selected test functions results in eliminating the domain integrals for calculation of the system “stiffness” matrix.
A line-wise weighted least squares (LWLS) method is proposed to construct trial functions.
This method for construction of trial functions is found to be an accurate technique.
The formulation of the MLILM does not require calculating the derivatives of trial functions, leading to eliminating the process of differentiating the LWLS approximation for displacements.
Numerical studies show the MLILM leads to accurate results.
American Psychological Association (APA)
Sadeghirad, Ali Rida& Kani, Iradj Mahmud Zadah& Rahimian, Muhammad& Astaneh, Ali Vaziri. 2008. Meshfree local integration on line method (MLILM) for linear elasticity. The Arabian Journal for Science and Engineering. Section B, Engineering،Vol. 33, no. 2B, pp.411-434.
https://search.emarefa.net/detail/BIM-330167
Modern Language Association (MLA)
Sadeghirad, Ali Rida…[et al.]. Meshfree local integration on line method (MLILM) for linear elasticity. The Arabian Journal for Science and Engineering. Section B, Engineering Vol. 33, no. B2 (Oct. 2008), pp.411-434.
https://search.emarefa.net/detail/BIM-330167
American Medical Association (AMA)
Sadeghirad, Ali Rida& Kani, Iradj Mahmud Zadah& Rahimian, Muhammad& Astaneh, Ali Vaziri. Meshfree local integration on line method (MLILM) for linear elasticity. The Arabian Journal for Science and Engineering. Section B, Engineering. 2008. Vol. 33, no. 2B, pp.411-434.
https://search.emarefa.net/detail/BIM-330167
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 432-434
Record ID
BIM-330167