A VBA Based Computer Program for Nonlinear FEA of Large Displacement 2D Beam Structures
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 9
Abstract
This article proposes a methodology for implementing a VBA based nonlinear FEA program in Microsoft Excel, for analyzing large displacement 2D beam structures. The program uses 2 noded - 6 degrees of freedom elements, and the equilibrium equations were formulated in combined Corotational - Total Lagrangian (CR-TL) system. Polynomial operation capability was built into the program, enabling computerized generation of stiffness and nodal force matrices. This makes the program easily adaptable to various element formulations. The program was also equipped with the mathematical functionality required for efficient handling of computations involving nonlinear strain measures. Accuracy and limitations of the program are demonstrated through NAFEMS benchmark tests.
Authors and Affiliations
Sreekanth M. Sivaraman
Keywords
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- EP ID EP21227
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