Calibration, Validation and Uncertainty Quantification of Nominally Identical Car Subframes
Paper i proceeding, 2016

In this paper a finite element model, with over half a million degrees-of-freedom, of a car front subframe has been calibrated and validated against experimental MIMO data of several nominally identical components. The spread between the individual components has been investigated and is reported. Sensor positioning was performed with an extended effective independence method, using system gramians to reject sensors with redundant information. The Fisher information matrix was used in the identification of the most significant model calibration parameters. Validation of the calibrated model was performed to evaluated the difference between the nominal and calibrated model, and bootstrapping used to investigate the validity of the calibrated parameters. The parameter identification, calibration, validation and bootstrapping have been performed using the open-source MATLAB tool FEMcali.

parameter identification

model updating

bootstrapping

uncertainty quantification

femcali

Författare

Mladen Gibanica

Chalmers, Tillämpad mekanik, Dynamik

Thomas Abrahamsson

Chalmers, Tillämpad mekanik, Dynamik

Magnus Olsson

Volvo

Conference Proceedings of the Society for Experimental Mechanics Series

21915644 (ISSN) 21915652 (eISSN)

Vol. 3 315-326

Ämneskategorier

Maskinteknik

DOI

10.1007/978-3-319-29754-5_31

ISBN

978-3-319-29753-8