Phân tích tĩnh bài toán đàn hồi hai chiều bằng phương pháp không lưới galerkin (efg)

• Tác giả: Thiện Ngôn Đặng, Hoài Sơn Nguyễn
• Ngôn ngữ: vie
• Ký hiệu phân loại: 531.38 Deformation; stresses and strains
• Thông tin xuất bản: Khoa học và Công nghệ, 2012
• Mô tả vật lý: 49-53
• Bộ sưu tập: Metadata
• ID: 638377

Tóm tắt

This paper presents a meshless approach to analyze two-dimensional elasticity problems by the Element-Free Galerkin (EFG) method. The method is based on moving least squares approximant. The unknown displacements are u (x) approximated by moving least square approximants u' (x). These approximants are constructed by using a weight function, a monomial basis function and a set of non-constant coefficients. A subdivision similar to finite element method is used to provide a background mesh for numerical integration. The essential boundary conditions are enforced by Lagrange multipliers. The results obtained for a two-dimensional problem using weight functions in EFG method will be compared with the results of finite element method.