Model updating in structural dynamics

07-Aug-2016 07:35

Further studies on the elimination of systematic errors from both the measurements and the finite element model so that it can provide more reliable model updating is recommended.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.This paper is a review of information and related studies concerning topic of model updating in structural dynamics.It is purposed to introduce and explain the important concept of the discussed subject in model updating area as well as to summarize the development and available guidance and method of conducting the study in this area.It covers all aspects of model preparation and data acquisition that are necessary for updating.The various methods for parameter selection, error localisation, sensitivity and parameter estimation are described in detail and illustrated with examples.resonance frequency or mass) as a result of modifying a parameter value.The coefficients obtained for all combinations of responses and parameters are stored in a sensitivity matrix.

Department of Mechanical Engineering, University College of Swansea, Singleton Park, Swansea SA2 8PP, Wales and Department of Mechanical and Electrical Engineering, Aston University, Birmingham B4 7ET, England is concerned with the correction of finite element models by processing records of dynamic response from test structures.Sensitivity analysis and model updating require that the user selects reference responses and parameters.Sensitivity coefficients are computed internally by FEMtools using a differential or finite difference method.The review is structured by presenting an overview of general concept of finite element model updating in structural dynamics and the capabilities of finite element method as a tool in model updating.After the concept introduction, the reliable methodology to perform model updating, the limitation and the critical issues in model updating is discussed.

Department of Mechanical Engineering, University College of Swansea, Singleton Park, Swansea SA2 8PP, Wales and Department of Mechanical and Electrical Engineering, Aston University, Birmingham B4 7ET, England is concerned with the correction of finite element models by processing records of dynamic response from test structures.Sensitivity analysis and model updating require that the user selects reference responses and parameters.Sensitivity coefficients are computed internally by FEMtools using a differential or finite difference method.The review is structured by presenting an overview of general concept of finite element model updating in structural dynamics and the capabilities of finite element method as a tool in model updating.After the concept introduction, the reliable methodology to perform model updating, the limitation and the critical issues in model updating is discussed.Model updating is a rapidly developing technology, and it is intended that this paper will provide an accurate review of the state of the art at the time of going to press.