PSI - Issue 39

ScienceDirect Available online at www.sciencedirect.com ScienceDir ct Structural Integrity 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

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 39 (2022) 89–97

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors Abstract In this study, the computational model for determination the fatigue life of sintered gears is presented. The total fatigue life of sintered gear, N , is divided into the crack initiation ( N i ) and crack propagation ( N p ) period. The number of stress cycles for crack initiation in a gear tooth root, N i , is determined using the strain-life approach and with consideration of the low-cycle fatigue parameters obtained previously for the same material as already used for the analysed sintered gear. The number of stress cycles for crack propagation from initial to the critical crack length, N p , is obtained using the simple Paris law and with consideration of fatigue crack growth material parameters taken from the author’s previous work. The comprehensive computational analyses in the framework of Ansys-software are performed to obtain the strain-stress field in a gear tooth root and for determination of the stress intensity factor in the crack tip. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors Keywords: Sintered gears; Crack initiation, Crack propagation, Numerical analysis 7th International Conference on Crack Paths Fatigue crack initiation and growth in a tooth root of sintered gears Aljaž Ignatijev a , Branko Nečemer a , Janez Kramberger a , Srečko Glodež a * a University of Maribor, Faculty of Mechanical Engineering, Smetanova 17, 2000 Maribor, Slovenia Abstract In this study, the computational model for determination the fatigue life of sintered gears is presented. The total fatigue life of sin ered gear, N , is divided into the crack initiation ( N i ) and crack propagation ( N p ) period. The numb r of stress cycles for crack initiation in a gear tooth root, N i , is determined using the st in-life approach and w th consideration f th low- ycle fatigue parameters obtained previously for the same material as already used for the analysed sintered g ar. The number of stress cycles for crack pr pagation from initial to the critical crack length, N p , i obtained using the impl Paris law and with c n id ration of atigue crack growth material p ramet rs taken f om the author’s previous work. T e comprehen ive computational analyses in the framework f Ansys-software ar performed t obtain the strain-stress field in a gear toot root and for determin tion of the stress int nsity factor in the crack tip. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of CP 2021 – Guest Editors Keywords: Sintered gears; Crack initiation, Crack propagation, Numerical analysis 7th International Conference on Crack Paths Fatigue crack initiation and growth in a tooth root of sintered gears Aljaž Ignatijev a , Branko Nečemer a , Janez Kramberger a , Srečko Glodež a * a University of Maribor, Faculty of Mechanical Engineering, Smetanova 17, 2000 Maribor, Slovenia

* Corresponding author. Tel.: +386-31-608739 E-mail address: srecko.glodez@um.si * Corresponding author. Tel.: +386-31-608739 E-mail address: srecko.glodez@um.si

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors 10.1016/j.prostr.2022.03.076