Structural members can be damaged from earthquakes or deterioration. The finite element (FE) model of a structure should updated to reflect the damage conditions. If stiffness reduction is ignored, analysis results will unreliable. Conventional FE updating techniques measure response with accelerometers update model. However, only where sensor installed. This paper introduces new computer-visio...

In this paper we study the problem of updating disjunctive databases, which contain indefinite data given as positive disjunctive clauses. We give correct algorithms for the insertion of a clause into and the deletion of a clause from such databases. Although the algorithms presented here are oriented towards model trees, they apply to any representation of minimal models.

Introduction: In the case that the state-space model class is nonlinear, Kalman filter and RTS smoother breaks down. Although it is always possible to linearize the nonlinear model so that Kalman filter and RTS smoother can still apply approximately, they can be not reliable. On the other hand, stochastic simulation approaches are not limited to linear model classes and can be adopted to draw s...

Model updating concerns the modification of an existing but inaccurate model with measured data. For models characterized by quadratic pencils, themeasured data usually involve incomplete knowledge of natural frequencies, mode shapes, or other spectral information. In conducting the updating, it is often desirable tomatch only the part of observed data without tampering with the other part of u...

1 INTRODUCTION Dozens of finite element model updating methods have been studied and suggested but still it remains as a difficult problem. That is because model updating is an inverse process and often contains highly non-linear characteristics. Also the updated result is not unique and depends heavily on the objective function and parameters used in the updating process. Usually, objective fu...

The modeling of damping is very complex and still considered somewhat an unknown or grey area. Recently, model updating methods has been used to update the damping matrix based on measured dynamic test data to accurately represent energy dissipation mechanism in dynamic systems. Most of the finite element updating methods considers that the dynamic systems are viscous and proportional. In this ...

The ICRP Task Group on Internal Dosimetry is developing new Occupational Intakes of Radionuclides (OIR) documents. Application of the Human Respiratory Tract Model (HRTM) requires a review of the lung-to-blood absorption characteristics of inhaled compounds of importance in radiological protection. Where appropriate, material-specific absorption parameter values will be given, and for other com...

New approaches are developed that use measured data to adjust the analytical mass and sti ness matrices of a system so that the agreement between the analytical modes of vibration and the modal survey is improved. By adding known masses to the structure of interest, measuring the modes of vibration of this mass-modi ed system, and nally using this set of new data in conjunction with the initial...

Each stage of the hierarchical clustering process involves one NP-complete clique finding process. In this paper, we present a method to add new mod* ,The cluster representatives at each stage are formed els automatically to an existing hierarchically organized .... by merging several child RPSDs below, and we modelbase. Given a new model, the model in the library closest to it is found by sear...