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8/8/2019 FEA Analysis Procedure
http://slidepdf.com/reader/full/fea-analysis-procedure 1/3
FEA analysis procedure
8/8/2019 FEA Analysis Procedure
http://slidepdf.com/reader/full/fea-analysis-procedure 2/3
Get the geometrical model (Iges or step format)
Choose solver interface in Hypermesh like Ansys/Ls-dyna/Nastran
Update the solver template in HM
Import the geometry file into Hypermesh I f i t i s s i mpl e beam model, i t can b e appr oxi mat ed us ing 1-D
elements and nodes (Need to assign Mat properties and Cross
section and other properties if any.
If shell or BIW type components,Mid surface to be extracted. Go
to Geom panel select midsurface sub panel and extract. Extracting
mid surface in plastic components is tedoius,need to rework on midsurface. After meshing assign thickness and mat properties and set
boundary conditions.
For example in a Cantilever beam constrain all DOF at the fixed
end. If it is roller supported leave one DOF for translation.If hinge
connected leave one rotating DOF.
If the components have solid intricacies like engine block or
castings, need to go for solid mesh. As approximation of geometry
is highly difficult.
Contact non linearity can be defined using 2D and 3D contact
elements.Eg-Gears or other power transmission coponents.
8/8/2019 FEA Analysis Procedure
http://slidepdf.com/reader/full/fea-analysis-procedure 3/3
Understand the problem and define boundary conditions correctly export
the pre processed job to solver.
Import the FE-model into selected solver Ansys/Nastran recheck the allBCs and fire the job.
Solution time depends on number of elements and type of
problem(Contacts,Modal etc)
Export the results. If it linear static analysis, need to check Vonmises
stress, shear stress, stress intensity and distribution, deformations.
If Non linear(Material) ,need to check the principal stresses deflectionsand strain.
If transient analysis need report the all above things with varying time.
In modal analysis need to report Natural frequency and deflections for the
frequency