A Node-based Smoothed Finite Element Method with Discrete Shear Gap For Free Vibration Analysis of Laminated Composite Plates

• Main Authors: Trần Trung Dũng, Thái Hoàng Chiến
• Format: Article
• Language: English
• Published: HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE 2011-07-01
• Series: Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ
• Subjects: tấm composite lớp; phương pháp phần tử hữu hạn trơn nút (ns-fem); phương pháp rời rạc lệch trượt (dsg); thuyết biến dạng trượt bậc nhất (fsdt)
• Online Access: https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/1057

This paper attempts to further develop the node-based smoothed finite element method (NS-FEM) to analysis of laminated composite plates using three-node triangular meshes based on the first-order shear deformation plate theory (FSDT). In the NS-FEM, a system stiffness matrix is performed by using the strain smoothing technique over the smoothing domains associated with the nodes of the elements. In order to eliminate shear locking, the NS-FEM is incorporated with the discrete shear gap (DSG) method to give a so-called node-based smoothed discrete shear gap method (NS-DSG). The numerical results derived from this method are compared with the solutions available in the literature to validate their reliability.