Lect05
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Three coordinate systems are used in finite element analysis: the local coordinate system defines each element's properties, the global coordinate system defines points in the entire structure, and the natural coordinate system specifies points within an element using dimensionless numbers between -1 and 1 with the origin at the element's center.
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Lect05
- 1. Dr. A. S. Sayyad Professor & Head Department of Structural Engineering Sanjivani College of Engineering, Kopargaon 423603. (An Autonomous Institute, Affiliated to Savitribai Phule Pune University, Pune) Finite Element Method In Civil Engineering Coordinate systems used in FEM
- 2. Coordinate systems used in FEM Three different coordinate systems are used in the finite element analysis 1) Local Co-ordinate system 2) Global Co-ordinate system 3) Natural Co-ordinate system Local Co-ordinate System When for each element in FEM, a separate coordinate system is used for deriving element properties it is called as Local Co-ordinate system. Element formulation
- 3. Coordinate systems used in FEM Global Co-ordinate System The coordinate system is used to define the point in the entire structure is called as Global Co-ordinate system. System formulation
- 4. Coordinate systems used in FEM Natural Co-ordinate System: Natural Co-ordinate System is a coordinate system which permits the specification of a point within the element by a set of dimensionless numbers, whose magnitude never exceeds unity. • Maximum value of ordinate is +1 and Minimum is -1 • In this coordinate system, origin is always assumed at the center of element.