Updating method

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Model updating is an effective means of damage identification and surrogate modeling has attracted considerable attention for saving computational cost in finite element (FE) model updating, especially for large-scale structures.In this context, a surrogate model of frequency is normally constructed for damage identification, while the frequency response function (FRF) is rarely used as it usually changes dramatically with updating parameters.Secondly, the method of Coupled Local Minimizers (CLM) is a new method applicable to global optimization of functions with multiple local minima.The CLM method is also sensitivity-based and uses a population of search points, which are subjected to constraints that enforce them to end in the same minimum.For Word Press 3.7 , you don’t have to lift a finger to apply minor and security updates.Most sites are now able to automatically apply these updates in the background.If your site is capable of one-click updates without entering FTP credentials, then your site should be able to update from 3.7 to 3.7.1, 3.7.2, etc.

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Generally, the discrepancies in eigenfrequencies and mode shapes are minimized, but also the discrepancies in modal strains can be included.

Damage functions are used to approximate the stiffness distribution, as an efficient approach to reduce the number of unknowns. The Gauss-Newton method is a standard sensitivity-based method for local optimization of least squares problems and is ameliorated here by implementing it with the trust region strategy.

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