Avoiding Mode Pairing when Updating Finite Element Models
نویسندگان
چکیده
منابع مشابه
LiTH ISY R Avoiding Mode Pairing when Updating Finite Element Models
Updating nite element models of complex mechanical structures requires some extra considerations It is stressed that the two most important aspects on up dating nite element models are parameter estimation properties and computational expenses A novel mode pairing free model updating formulation is found to have good parameter estimation properties The computational expenses are reduced with a ...
متن کاملUpdating of Finite Element Models
A new optimisation method to find the global minimum of a cost function, named Coupled Local Minimisers (CLM), is presented. In CLM, several local optimisation processes are coupled, i.e. they interact and exchange information, resulting in better solutions than multi-start local optimisation with independent runs. The principal idea of CLM is worked out and illustrated with a mathematical test...
متن کاملUpdating Nonlinear Finite Element Models in the Time Domain
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 t...
متن کاملBayesian evidence for Finite element model updating
This paper considers the problem of model selection within the context of finite element model updating. Given that a number of FEM updating models, with different updating parameters, can be designed, this paper proposes using the Bayesian evidence statistic to assess the probability of each updating model. This makes it possible then to evaluate the need for alternative updating parameters in...
متن کاملA Comparison Study on Various Finite Element Models of Riveted Lap Joint by the Use of Dynamic Model Updating
Till now, various models have been proposed in literature to simulate the behavior of riveted structures. In order to find the most accurate analytical method in modeling the dynamic behavior of riveted structures, a comparison study is performed on several of these models, in this research. For this purpose, experimental modal analysis tests are conducted on a riveted plate to verify the effic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IFAC Proceedings Volumes
سال: 1997
ISSN: 1474-6670
DOI: 10.1016/s1474-6670(17)42850-3