Publication detail
Identification of rheological model parameters by means of nonlinear optimization in GAMS
PÍŠTĚK, V. MAUDER, T. KLIMEŠ, L.
Czech title
Stanovení parametrů reologických modelů metodami nelineární optimalizace v software GAMS
English title
Identification of rheological model parameters by means of nonlinear optimization in GAMS
Type
conference paper
Language
en
Original abstract
The paper presents results of the application of GAMS optimization software and CONOPT solver for nonlinear optimization problems to identify multi-parameter elastomer rheological models. The solution is based on the experimentally set frequency-dependent dynamic stiffness of the elastomeric parts. Measured waveforms of dynamic stiffness are approximated using multi-parameter rheological models. A generalized Kelvin model has been used for rubber silentblocks of a tractor cab mounting. The CONOPT solver has shown a significantly faster convergence and better accuracy of the calculation compared with the previously used classical non-linear Gauss-Newton least square optimization technique.
Czech abstract
Článek se zabývá aplikací optimalizačního software GAMS a řešiče CONOPT pro řešení nelineární optimalizační úlohy s cílem stanovit parametry reologických modelů elastomerů. Řešení je založeno na prokladu experimentálně získaných dat, které jsou frekvenčně závislé. Data jsou následně aproximována multiparametrickým optimalizačním modelem, který je založen na zobecněném Kelvinově modelu. V článku jsou prezentovány výsledky pro pryžové silentbloky kabiny traktoru.
English abstract
The paper presents results of the application of GAMS optimization software and CONOPT solver for nonlinear optimization problems to identify multi-parameter elastomer rheological models. The solution is based on the experimentally set frequency-dependent dynamic stiffness of the elastomeric parts. Measured waveforms of dynamic stiffness are approximated using multi-parameter rheological models. A generalized Kelvin model has been used for rubber silentblocks of a tractor cab mounting. The CONOPT solver has shown a significantly faster convergence and better accuracy of the calculation compared with the previously used classical non-linear Gauss-Newton least square optimization technique.
Keywords in Czech
elastomer, tlumení s hysterezí, reologický model, zobecněný Kelvinův model, optimalizace, dynamická tuhost, pryžový silentblok
Keywords in English
elastomer, hysteretic damping, rheological model, generalized Kelvin model, optimization, dynamic stiffness, rubber silentblock
RIV year
2014
Released
25.06.2014
Publisher
Brno University of Technology
Location
Brno
ISBN
978-80-214-4984-8
Book
Proceedings of 20th International Conference on Soft Computing MENDEL 2014
Pages from–to
347–352
Pages count
6
BIBTEX
@inproceedings{BUT108133,
author="Václav {Píštěk} and Tomáš {Mauder} and Lubomír {Klimeš},
title="Identification of rheological model parameters by means of nonlinear optimization in GAMS",
booktitle="Proceedings of 20th International Conference on Soft Computing MENDEL 2014",
year="2014",
month="June",
pages="347--352",
publisher="Brno University of Technology",
address="Brno",
isbn="978-80-214-4984-8"
}