PSI - Issue 17

Available online at www.sciencedirect.com Structural Int grity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 17 (2019) 90–97

ICSI 2019 The 3rd International Conference on Structural Integrity Durability of hypotrochoidal shaft-hub connections under rotating bending with static torsion Sebastian Vetter a, *, Erhard Leidich a , Masoud Ziaei b , Marcus Herrmann b , Alexander Hasse a a Technische Universität Chemnitz, Professorship Machine Elements and Product Development, Institute of Engineering Design and Drive Technology, Reichenhainer Straße 70, 09126 Chemnitz, Germany b Westsächsische Hochschule Zwickau, Professorship Machine Elements, Dr.-Friedrichs-Ring 2A, 08056 Zwickau, Germany The primary function of shaft-hub connections is the transmitting of torsional moments. The polygon-shaft-hub connection is a type of shaft-hub connection with increasing importance. Compared to conventional press fits, a main advantage of this type of connection is the additional normal force in the contact joint due to the eccentricity of the polygonal profile. This results in the possibility of transmitting high static torsional moments. These static torsional moments often occur with rotating bending. Due to this aspect, the combined load case is of particular importance for the durability of shaft-hub connections. Therefore, the currently unknown static load capacity and high cycle fatigue strength of polygon-shaft-hub connections were investigated in this paper. Part of the investigations were polygon-shaft-hub connections with a hypotrochoidal profile shape manufactured from the materials C45E or 42CrMo4. The static tests aimed at evaluating the transmissible torsional moment up to the point of permanent deformation. The different test series in the field of fatigue strength were evaluated under rotating bending or rotating bending with static torsion as mean stress. Based on the evaluated fatigue strengths, notch factors were calculated. Using the notch factors, an approach for a calculation method for the fatigue strengths of polygon-shaft-hub connections was developed. ICSI 2019 The 3rd International Conference on Structural Integrity Durability of hypotrochoidal shaft-hub connections under rotating bending with static torsion Sebastian Vetter a, *, Erhard Leidich a , Masoud Ziaei b , Marcus Herrmann b , Alexander Hasse a a Tech isch U iversität Chemnitz, Professorship Machine El ments and Product Development, Institute of Engineering Design and Drive Technology, Reiche hainer Straße 70, 09126 Chemnitz, Germany b Westsächsische Hochschule Zwickau, Professorship Machine Elements, Dr.-Friedrichs-Ring 2A, 08056 Zwickau, Germany Abstract The primary functi of shaft-hub connections is the transmitting of torsional moments. The polygo -shaft-hub c nnection is a type of shaft-hub connection with increasi g imp rtance. Compared to conventional press fits, a m in advantage of this type of c nnection is the additional normal force i the contact joint due to the eccentricity of the polygonal profile. This results in the possibility of trans itting high static t rsional moments. These static torsional moments often ccur with rotating bending. Due to this aspect, the c mbined load case is of particular importance for the durability of shaft-hub connections. Ther fore, the currently unknown static load capacity and high cycle fatigue strength of polygon-shaft-hub connections were investigated in this paper. Part of the investigations were polygon-shaft-hub connections with a hypotrochoidal profile shape manufactured from the materials C45E or 42CrMo4. The static tests aimed at evaluating the transmissible torsional moment up to the point of permanent deformation. The different test series in t e field of fatigue strength were evaluated under rotating bending or rotating bending with static torsi n as mean stress. Based on the evaluated fatigue stren ths, notch factors were calculated. Using the notch factors, an approach for a calculation method for the fatigue strengths of polygon-shaft-hub connections was developed. Abstract

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers.

Keywords: Shaft-hub connection; static load capacity; fatigue strength; hypotrochoidal profile shape; notch factor Keywords: Shaft-hub connection; static load capacity; fatigue strength; hypotrochoidal profile shape; notch factor

* Corresponding author. Tel.: +49-371-531-32070; fax: +49-371-531-23319. E-mail address: sebastian.vetter@mb.tu-chemnitz.de * Correspon ing author. Tel.: +49-371-531-32070; fax: +49-371-531-23319. E-mail address: sebastian.vetter@mb.tu-chemnitz.de

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers.

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ICSI 2019 organizers. 10.1016/j.prostr.2019.08.013