Detail publikace
TIME-DOMAIN SIMULATIONS OF GROOVING PROCESS WITH STIFFNESS UNCERTANTITIES
HADRABA, P. SVOBODOVÁ, M. LIN, H. HADAŠ, Z.
Anglický název
TIME-DOMAIN SIMULATIONS OF GROOVING PROCESS WITH STIFFNESS UNCERTANTITIES
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
In the world of nonlinear dynamics, it is necessary to consider the fact that a small change of input parameter can cause large changes in results. However, several methods deal with uncertainty. This paper compares two methods for uncertainty analysis, polynomial chaos expansion, and Monte Carlo method. The analysis was performed on the structure of the machine tool slide. The two main components – linear roller guideway with preload and linear ball screw, they both present with the nonlinear characteristic. The stiffness of these components is dependent on the deformation as well as the direction of load. The results of both methods match reasonably in a stable condition. For the unstable machining should be surrogated model improve for further analysis. The main advantage of PCE is a shorter computation time in contrast to time-consuming MC. This approach enables not only the stimulation of the machining process in local conditions but in the future, it might be also extended for the analysis of machine tool stability in the full condition range.
Anglický abstrakt
In the world of nonlinear dynamics, it is necessary to consider the fact that a small change of input parameter can cause large changes in results. However, several methods deal with uncertainty. This paper compares two methods for uncertainty analysis, polynomial chaos expansion, and Monte Carlo method. The analysis was performed on the structure of the machine tool slide. The two main components – linear roller guideway with preload and linear ball screw, they both present with the nonlinear characteristic. The stiffness of these components is dependent on the deformation as well as the direction of load. The results of both methods match reasonably in a stable condition. For the unstable machining should be surrogated model improve for further analysis. The main advantage of PCE is a shorter computation time in contrast to time-consuming MC. This approach enables not only the stimulation of the machining process in local conditions but in the future, it might be also extended for the analysis of machine tool stability in the full condition range.
Klíčová slova anglicky
Polynomial chaos expansion; Monte Carlo; Turning model; Uncertainty analysis; Nonlinear stiffness
Vydáno
24.11.2020
Nakladatel
BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING
Místo
BRNO
ISBN
978-80-214-5896-3
ISSN
1805-8256
Kniha
ENGINEERING MECHANICS 2020
Ročník
26
Číslo
2020
Strany od–do
178–181
Počet stran
4
BIBTEX
@inproceedings{BUT177051,
author="Petr {Hadraba} and Zdeněk {Hadaš},
title="TIME-DOMAIN SIMULATIONS OF GROOVING PROCESS WITH STIFFNESS UNCERTANTITIES",
booktitle="ENGINEERING MECHANICS 2020",
year="2020",
volume="26",
number="2020",
month="November",
pages="178--181",
publisher="BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING",
address="BRNO",
isbn="978-80-214-5896-3",
issn="1805-8256"
}