Updating nonlinear finite element models in the time domain

摘要

This paper describes the implementation, verification, and comparison of two techniques for updating nonlinear finite-element structural dynamics models using transient time-domain data. The methods are motivated in terms of the intended applications, and the derivations are shown as they relate to the model updating methods for linear finite element models. The application of the two methods to simulated results for an impact problem (with a structure containing a hyperelastic polymer) is presented.