Search for dissertations about: "multi-harmonic frequency response function"

Found 2 swedish dissertations containing the words multi-harmonic frequency response function.

2. 1. Nonlinear Structural Identification Using a Multi-Harmonic  Frequency Response Functions

   Author : Vahid Yaghoubi Nasrabadi; Thomas Abrahamsson; Andreas Linderholt; Martin Magnevall; Chalmers; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonlinear structure; inverse problem; grey box system identification; finite element model updating; identifiability; Fisher information matrix; multi-harmonic frequency response function; Maskinteknik; Mechanical Engineering;

   Abstract : In industrial structural dynamics problems, linear FE-models commonly serve to represent the global structural behavior. However, when test data are available they often show evidence of nonlinear dynamic characteristics. In that case, an initial linear model may be judged insufficient in representing the dynamics of the structure. READ MORE

4. 2. Model Calibration of Nonlinear Mechanical Systems Using Multi-Harmonic Frequency Response Functions

   Author : Yousheng Chen; Andreas Linderholt; Thomas Abrahamsson; Ahlin Kjell; Linnéuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element model calibration; multi-harmonic frequency response function; Fisher information matrix; nonlinear structural dynamics; identifiability; data informativeness; Maskinteknik; Mechanical Engineering;

   Abstract : In industry, linear finite element models are commonly employed to represent global structural behavior. It is crucial that the computational models are able to accurately represent the structures’ behavior. This cannot always be achieved by the use of linear models. READ MORE