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Finite Element Analisys

Finite Element Analisys. Finite element analisys is a process in which a component is subdivided into small elements of ‘finite size’.

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Finite Element Analisys

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  1. Finite Element Analisys • Finite element analisys is a process in which a component is subdivided into small elements of ‘finite size’. • The advantage of these elements is that it is it is easier to define mathematically the ‘behaviour’ of such elements (force displacement relationship) than for the entire component. • Finite element analisys uses iteration to come up with the final solution.

  2. Finite element analysis • A finite element problem is usually defined in terms of 3 main steps. • Pre-Processing • Modelling geomety, defining material, applying loads and restraints and meshing. • Solution • This is the backround mathematical calculations which the computer performs to determine stresses, displacements etc. (The solution process generates numerical data only). • Post-Processing • This is the process of generating a graphical representation of this numerical data to the give the user a visual appreciation of the results. Contour plots etc.

  3. Cosmos Works • CosmosWorks is one of a number of third party applications which can be used in conjunction with 3D modelling programs. • They have the advantage of providing the user with a user friendly interface while, shielding the user from the underlying complexity of the finite element process. • Such applications while convenient for quick analisys, often lack the level and control and analisys capability of ‘full’ FEA programs.

  4. Finite Element Analisys • Proceedure:- The following is the proceedure for solving a Finite Element Problem within CosmosWorks. • Model the component • Activate Finite element program. • Define analisys type (static etc) • Define Material properties (Youngs mod etc) • Apply restraints • Apply loads • Mesh part (i.e. divide into finite elements) • Run the analisys • View results

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