Improving finite element analysis accuracy using physical measurements

Increasingly more engineers use computer aided analysis tools in the design process of a structure or part.

Increasingly more engineers use computer aided analysis tools in the design process of a structure or part. One of the most commonly used methods is finite element analysis (FEA).

The main application area is mechanical stress and strain analysis. Also in other engineering domains, the FEA has proven its importance. A difficulty with this and with all simulation techniques is that the analyst should be sure his model is a good representation of the real structure. For simple structures e.g. clamped cantilever beams, the FEA has proven to be accurate.

The problems arise with special features like weldings, bolt connections and composite materials. How can we make sure the mathematical model of the structure behaves exactly like the original, real part or structure? The problem in some cases is that we do not have a clear idea of the behavior of the real life structure.