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FE Analysis Essay

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Chapter 4 SOFTWARE FAMILIARIZATION AND VALIDATION STUDY FE analysis is considered to be a valuable analytical tool in structural engineering domain. Several commercial FE based software are available for analysis and design of structural systems. If the analysis makes assumptions or requires additional data input along these lines, care should be taken to understand and work within the limitations of the analysis. Structural analysis programs should be fully understood with respect to the theory and approximations used in them. Notations and sign conventions with respect to the loading, properties and boundary conditions must be clearly understood. In the present study, software ETABS and SAFE, products from Computers and Structures, Inc., http://www.csiamerica.com …show more content…

At any point in the plate bending, there will generally be two bending moments Mx, My in two mutually perpendicular directions coupled with a complimentary twisting moment Mxy. Design for flexure involves providing reinforcing steels in two orthogonal directions to resist the moment field. Mx, My and Mxy. Wood –Armer equations are used for this purpose. Wood –Armer equations This method was developed by considering the normal moment yield criterion (Johansen’s yield criterion) aiming to prevent yielding in all directions. At any point in the slab, the moment normal to a direction, resulting due to design moments Mx, My, and Mxy must not exceed the ultimate normal resisting moment in that direction. Mx* cos2 θ+ My* sin2θ ≥ Mx cos2 θ + My sin2 θ + 2 Mxy cosθ sin θ Where, Mx* cos2θ+ My* sin2θ → Flexural strength of plate in the direction of θ with X axis Mx cos2 θ+ Mysin2 θ+ 2 Mxy cosθ sin θ → Normal bending moment in the direction of

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