Finite Element Model Updating Using the Local Correspondence Principle

Sandro Diord Rescinho Amador, Martin Ørum Ørhem, Tobias Friis, Rune Brincker

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

In this, paper an overview of a Finite Element (FE) model updating technique based on the Local Correspondence (LC) principle is presented. The main idea behind the LC technique is to update the FE model by replacing the mode shape vectors and natural frequencies with their corresponding experimental counterparts obtained from an output-only modal testing. This is accomplished by taking advantage of the fact that the inverse mass and stiffness matrices can be expressed as a linear combination of outer products of the mode shape vectors. Aiming at discussing the LC technique from a practical perspective, a simulation study is presented to illustrate its ability to improve the Maximum Assurance Criterion (MAC) between the FE and experimental mode shape vectors so that it gets close to unity.
Original languageEnglish
Publication date2018
Number of pages6
Publication statusPublished - 2018
Event36th International Modal Analysis Conference - Orlando, United States
Duration: 12 Feb 201815 Feb 2018
Conference number: 36

Conference

Conference36th International Modal Analysis Conference
Number36
Country/TerritoryUnited States
CityOrlando
Period12/02/201815/02/2018

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