Finite element model updating based on response surface methodology superdatingguidepersonals com

The FE model is updated through three consecutive stages.In each stage, the first three resonant frequencies are calculated using ANSYS and correlated with modal test results.The response surface method is becoming popular for its fast-running and good convergence properties [].This method uses design of experiment (DOE) method to create samples for updating parameters and calculate the response at each sample.

A specially designed fixture is used to mimic the typical boundary condition of plug-in PCBs.

The accuracy of the FE model is essential for predicting fatigue life under random vibration.

Although there are literatures showing that the uncertainties of the material properties and the boundary condition of PCB have strong effects on the simulation results [], very few author presented the model updating procedure for PCBs.

To reduce the number of updating parameters, the sensitivity analysis can be used to determine the key parameters.

The sampling of updating parameters affects the accuracy and computation efficiency of the response surface model.

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