Technical gazette, Vol. 28 No. 5, 2021.
Preliminary communication
https://doi.org/10.17559/TV-20200131154541
Modal Properties of Bolted Housing depending on the Methodology of a Solution of Bolted Joints
Peter Weis*
orcid.org/0000-0002-1669-4890
; University of Žilina, Faculty of Mechanical Engineering, Univerzitná 8215/1, 01026 Žilina
Ján Šteininger
orcid.org/0000-0002-2969-4902
; University of Žilina, Institute of Competitiveness and Innovations, Univerzitná 8215/1, 01026 Žilina
Milan Sapieta
orcid.org/0000-0003-1356-1168
; University of Žilina, Faculty of Mechanical Engineering, Univerzitná 8215/1, 01026 Žilina
Branislav Patin
; University of Žilina, Faculty of Mechanical Engineering, Univerzitná 8215/1, 01026 Žilina
Abstract
This paper presents the research of modal characteristics of the bolted housing. The aim of the research was to find out the impact of the methodology of the solution of bolted joints on modal characteristics of the bolted housing of the gearbox unit. Results of research can be applied to bolted housings of any machineries. An impact of bolted joints and their modal properties was also the subject of research. The first three analyses focused on an application of various approximations of bolted joints. The analysis of their substitution by a simplified 3D geometry was solved. The second analysis focused on an application of Beam elements and the third one focused on substitution by bonded contact types. The fourth analysis regarded housing as one body without bolted joints. The impact on modal properties of pre-stress load in joints was researched. The housing was also loaded by the torque moment of an electric motor by means of bearing reactions and also the weight of the motor and brakes mounted to the housing. The article also deals with the efficiency of individual methods regarding the calculation time.
Keywords
bolted connections; bolted housing; bolt preload; modal analysis
Hrčak ID:
261349
URI
Publication date:
15.8.2021.
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