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What is 3-Node Element Stiffness Matrix Explained about?

This document discusses the stiffness matrix for a 3-node element used in finite element analysis. It introduces shape functions that allow for a piecewise parabolic approximation of displacement over each element using 3 nodes. This enhances the accuracy over a simple linear approximation. The shape functions and their derivatives are defined. Integrating the strain-displacement relationship over the element results in a 3x3 stiffness matrix that describes the element

Author

amargg

Language

EN