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Finite Element Modelling

Finite Element Modelling. FE Theory: (Review Basics) FE Analysis: (Modelling/STRAND. STRAND7 FEA. SpaceGass Modelling. Start with FEA theory & practice. Complex Structural Assemblages How to model, accuracy, limitations, etc. Introduction to STRAND.

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Finite Element Modelling

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  1. Finite Element Modelling

  2. FE Theory: (Review Basics) FE Analysis: (Modelling/STRAND

  3. STRAND7 FEA

  4. SpaceGass Modelling

  5. Start with FEA theory & practice

  6. Complex Structural Assemblages How to model, accuracy, limitations, etc

  7. Introduction to STRAND

  8. Introduce “theory basics”/”modelling basics” • Video on FEA • 2-D Triangle Formulation (Powerpoint) • Then (later next week) Anil’s Powerpoint

  9. P’ P’ x x v(x,y) v(x,y) y y P P u(x,y) u(x,y) Truss Beam Two-dimensional Y X

  10. k k l o l n k k l j p n j i j i m m i j i Two-dimensional Y X

  11. Three-dimensional Y Z l z y k i x X j 3 DOF/node (orthogonal displacements  12 DOF total

  12. Three-dimensional Y Z l k P i wi j w(x,y) P’ yy iyy ixx xx X 3 DOF/node (vertical displacement, 2 rotations  12 DOF total

  13. Finite Element Modelling • Choose 'strategy‘ eg 2 or 3-D model • Choose element(s) from library • Select Mesh - location of nodes, connectivity of elements, material properties, boundary conds. • Prepare input file for a suitable package taking care of node/element numbering to suit optimal condition for the resident equation solver. • Consider all independent load cases prior to analysis run • 'Run'/debug model • Interpret output with care.

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