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Unformatted text preview: h the accessible inspection data used to monitor the process has been analyzed. This application illustrates some of the implications in variation simulation of sheet metal assemblies. It shows that correlation between simulation result and inspection data is depended on a number of modeling aspects. It was required to incorporate assembly sequence, contact modeling, weld sequence and analysis of inspection data in order to receive a satisfactory correlation between simulated variation in mean and inspection data. The correlation between simulated variance and measured was not satisfactory. The probable cause to this is that other types of variations are not captured in the model due to that it is very difficult to estimate or measure these variations. It is also important to be aware of that simulating part variation by applying a displacement and calculating new part geometry with FEA could result in a geometry that is unlikely to occur in real assembly. It is therefore important to analyze inspection data to confirm that the amount of inspection points is adequate. In order to fully verify variation simulation methods it is probably required to have scanned single parts. More verification of other types of assemblies is needed in order to derive more general conclusions. REFERE...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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