Vibrational Response Reconstruction and Model Validation
Licentiatavhandling, 2008

In this thesis, laboratory response reconstruction and computational model validation is investigated. The former concerns applications of control theory as the objective is to reproduce a certain loading for a known component, while the latter concerns optimization of a parameterized model as the objective is to modify a computational model to mimic a certain component's behavior. These sibling problems are also often referred to as drive signal identification for rig testing and model updating, respectively. They are both inverse problems, as in the case of drive signal identification the objective is to find a suitable input based on knowledge of the system and its output, while the model updating objective is to modify a system based on knowledge of its input and output. These problems are often further classified as inverse problems of the first and second kind, respectively. Aspects of these two neighbor problems, namely controllability considerations in the case of response reconstruction and error metric considerations in the case of model validation, are treated.

error metrics

response reconstruction

controllability

rig test

drive signal identification

inverse problems

model validation

state space

model updating

Departmental Library, Applied Mechanics, Division of Dynamics, Chalmers Södra, Chalmers
Opponent: Ph.D. Per Sjövall , ÅF-Ingemansson, Sweden

Författare

Anders Johansson

Chalmers, Tillämpad mekanik, Dynamik

Increased Controllability in Component Testing using Structural Modifications

23rd International Conference on Noise and Vibration Engineering 2008, ISMA 2008; Leuven; Belgium; 15 September 2008 through 17 September 2008,; (2008)p. 999-1007

Paper i proceeding

Comparison of Several Error Metrics for FE Model Updating

Proceedings of the 25th International Modal Analysis Conference (IMAC-XXV), February 19-22, Orlando, Florida, USA,,; (2007)

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

Ämneskategorier

Maskinteknik

Technical report - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden: 14

Departmental Library, Applied Mechanics, Division of Dynamics, Chalmers Södra, Chalmers

Opponent: Ph.D. Per Sjövall , ÅF-Ingemansson, Sweden