IDENTIFICATION OF BOUNDARY-CONDITIONS AS A PART OF MODEL CORRECTION

Experience shows that in mathematical models of elastic systems the bo undary conditions, bearings and joints are those parts of the system w hich are generally much less well known than the main components. The influence of these local parts on the system's dynamic behavior is com monly underestimated. Thus, in model correction, they tend to be model led in an oversimplified way. Taking this fact into account, the prese nt paper gives a system identification approach that is limited (at le ast in a first step) to the estimation of boundary conditions by using measured modal data.