Finite element updating

29-Jan-2016 05:03

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.This paper presents selected results and aspects of the multidisciplinary and interdisciplinary research oriented for the experimental and numerical study of the structural dynamics of a bend-twist coupled full scale section of a wind turbine blade structure.Two major mechanisms from temperature can cause uncertainties in natural frequency and mode shape measurements: i) the changes of material properties (elastic modulus) by temperature variation, and ii) the stress stiffening effects by temperature induced axial loading.Also, changes of boundary condition may cause variation in modal properties as well.A model updating procedure for developing a finite element model for the Seohae Bridge is proposed.The bridge is a slab-on-stringer cable-stayed bridge with a main span of 470 m and has been in operation since 2000.

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A numerical study on updating a bridge model subjected to damage and environmental changes is presented to demonstrate the effectiveness of the proposed method.

Seismology is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.

The field also includes studies of earthquake effects, such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, oceanic, atmospheric, and artificial processes (such as explosions).

The updated finite element model is producing results more consistent with the measurement outcomes.

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Wind turbine blades must be designed to resist the extreme load cases and fatigue loads from normal operation.To ensure the availability of the Digital Library we can not allow these types of requests to continue.