ANALISIS NONLINIER GEOMETRI STRUKTUR FRAME-TRUSS 3D DENGAN METODE ELEMEN HINGGA

• Main Author: Karyadi Karyadi
• Format: Article
• Language: Indonesian
• Published: Universitas Negeri Malang 2012-09-01
• Series: Teknologi dan Kejuruan
• Subjects: Nonlinier geometri; frame; truss; updating; Generalized Stiffness Parameter
• Online Access: http://journal.um.ac.id/index.php/teknologi-kejuruan/article/view/3105

Abstract: Non-linear  analysis program for 3D structural geometry has not yet been used for analyzing the frame-truss structure. It needs more accurate and efficient program in analyzing the 3D structural geometry. This research is set out through this analysis procedure. The procedure is based on the displa-cement formula from finite element generating the matrix of geometrical stiffness (kg) and the matrix of induce moment stiffness (kj). The matrix of element stiffness is differentiated from the principle of virtual process with high order attachment. Elemen geometry updating is conducted through finite rotation concept and non-linear problems formulated as increment, while iteration is conducted by using Generalized Stiffness Parameter method, through critical points. The matrix of global stiffness is calculated firstly by summarizing the matrix of local stiffness (ke), (kg), and (kj), and then transformed into the global system. Augmented matrix is used in simultaneous linier function in each iteration process. It can hopefully reduce the running time.