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I know we use FEA for analysis of beams, rods, plates, thermal problem. I am interested to know where else do we use FEA in real time work .
FEM is applied on each and every part of an Aircraft.
From Cockpit to Tail. Fuselage, Wings, Engines, Flow simulation to check its dynamic strength, crash test (Land & Water), Landing gear Analysis (Nose as well as main landing gears), Analysis for the case of failure in any of this systems.
A lot of FEM test are involved in addition to the Windtunnel & physical tests before get added into service.
FE Analysis can be used to analyse any application one can think of. Beams, rods plates, shells are just the limiting cases where the problems have been define and equations are written with some basic assumptions/ approximations which leads to faster and good results.
For example, a beam formulation has an assumption that the longitudinal dimensions are too long as compared to the sectional dimensions. Same is the plane stress and plane strain condition.
One can use FEA for analysing, Structure for vibration, noise, stiffness, stress; for anlysing casting process, to study residual stresses after casting, composites, plastics, rubber and rubber like material etc.
Every application where there could be a deformation of structure due to external or internal loads can be applied to FEA for studying.
But sometimes one sees that Finite Volume method is generally preferred over Finite Element method for Fluid Flows and Finite Difference schemes for compressible flows at high mach >1. These are all due to applicability and the speed and accuracy of results over one another. Speed and accuracy all depends on the how the problem has been approached in the cose and the underlying approximations.
