14th IFAC Symposium on System Identification, SYSID 2006

SYSID-2006 Paper Abstract

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Paper FrB4.5

Runqvist, Agnes (Uppsala Univ.), Mousavi, Saed (The Ångström Lab.), Söderström, Torsten (Uppsala Univ.)

Nonparametric Identification of Complex Modulus Using a Non-Equilibrium SHPB Procedure

Scheduled for presentation during the Regular Session "Modal Analysis and Estimation of Mechanical Properties" (FrB4), Friday, March 31, 2006, 16:50−17:10, Cummings Room

14th IFAC Symposium on System Identification, March 29 - 31, 2006, Newcastle, Australia

This information is tentative and subject to change. Compiled on July 16, 2018

Keywords Frequency Domain Identification, Nonparametric Methods, Vibration and Model Analysis

Abstract

We investigate non-parametric identification of the frequency dependent complex modulus of a viscoelastic material, using a non-equilibrium split Hopkinson pressure bar technique. Three different procedures for estimating the complex modulus from experimental data are considered, and an analysis of the quality of the estimates is carried out. The validity of the theoretical results are confirmed by numerical studies and experimental tests.