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Application of dynamic modeling to the evaluation of influence of strengthening treatment on fatigue resistance
- Authors: Kostichev V.E.1
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Affiliations:
- Samara State Aerospace University
- Issue: Vol 14, No 1 (2015)
- Pages: 147-153
- Section: MECHANICAL ENGINEERING AND POWER ENGINEERING
- URL: https://journals.ssau.ru/vestnik/article/view/2602
- DOI: https://doi.org/10.18287/1998-6629-2015-14-1-147-153
- ID: 2602
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Abstract
A method of dynamic analysis of a strain-stress state in parts of an internal-combustion engine with stress concentrators has been worked out. The method gives an opportunity to take into account the rise of the fatigue resistance due to strengthening treatment, to choose the optimal mode of surface hardening and its regimes, to develop the technological and designing activities aimed at improving the fatigue resistance characteristics of the parts. The method has been tested drawing on the example of rolled cylindrical specimens, the results have been confirmed by experimental data. Failure zones of the crankshaft as the most strained part of a combustion engine in the operation process have been investigated and determined on the basis of metallographic analysis and reclamation data carried out at the Open Joint-Stock Company “Auto diesel” (YMZ). Finite-element models of the engine YMZ-238 crankshaft have been constructed using the ANSYS/LS-DYNA software complex. The models make it possible to evaluate the influence of hardening on the fatigue resistance under operating loads and boundary conditions corresponding to the real working regimes of the YMZ-238 engine and the area of initiation of fatigue macro cracks causing the destruction. On the basis of the results obtained in solving a production problem using the proposed method and confirmed by the reclamation analysis designing and technological activities aimed at ensuring the required level of crankshaft fatigue resistance due to the optimization of hardening treatment regimes have been proposed
About the authors
V. E. Kostichev
Samara State Aerospace University
Author for correspondence.
Email: thourvald@mail.ru
Postgraduate student of the Department of Strength of Materials
Russian FederationReferences
- Pavlov V.F. On connection between residual stresses and endurance limit under bending under stresses concentration condi-tions. Proceedings of Higher Educational Institutions. Маchine Building. 1986. №8. P. 29-32. (In Russ.)
- Pavlov V.F. Residual stresses in the part with a concentrator surface layer value and distribution influence on endurance limit. Report 1. Solid parts. Proceedings of Higher Educational Institutions. Маchine Building. 1988. №8. P. 22-26. (In Russ.)
- Radchenko V.P., Afanacieva O.S. Calculation Procedure of a Fatique Point for Strengthened Cylindrical Specimen with Pressure Concentrators at Temperature Endurances in the Creep Conditions. Vestnik SamGTU. Seriya: Fiziko-matematicheskie nauki. 2009. №2 (19). P. 264-268. (In Russ.) doi: 10.14498/vsgtu733
- Pavlov V.F., Kirpichev V.A., Vakulyuk V.S. Prognozirovanie soprotivleniya ustalosti poverkhnostno-uprochnennykh detaley po ostatochnym napryazheniyam [Prediction of fatigue resistance of surface-hardened parts by residual stresses]. Samara: Samarskiy nauchnyy tsentr RAN Publ., 2012. 125 p.
- Vakulyuk V.S. The dependence of detail fatigue resistance on the thickness of hardening layer under outstripping superficial plastic deforming. Vestnik of the Samara State Aerospace University. 2012. №3 (34), part 3. P. 172-176. (In Russ.)
- Ivanov S.I., Pavlov V.F., Minin V.B., Kirpichev V.A., Kocherov E.P., Golovkin V.V. Ostatochnye napryazheniya i soprotivlenie ustalosti vysokoprochnykh rez'bovykh detaley [Residual stresses and fatigue resistance of high-strength threaded parts]. Samara: Samarskiy nauchnyy tsentr RAN Publ., 2015. 171 p.
- Belozyorov V.V., Makhatilova A.I., Turovsky M.L., Shifrin A.M. Residual macrostressesunder rolling without longitu-dinal supply. Russian Engineering Research. 1986. V. 6, no. 10. P. 59-61.
- Bukaty A.S. Ensuring parts manufacture accuracy after hardening by superficial plastic deforming. Proceedings of the IV International Scientific Technical Conference «Problems of machines investigation and designing». Penza: Privolzhskiy Dom znaniy Publ., 2008. P.24-26. (In Russ.)
- Pavlov V.F., Stolyarov A.K., Vakulyuk V.S., Kirpichev V.A. Raschet ostatochnykh napryazheniy v detalyakh s kontsentratorami napryazheniy po pervonachal'nym deformatsiyam [Calculation of residual stresses in parts with stress concentrators by initial deformations]. Samara: Samarskiy nauchnyy tsentr RAN Publ., 2008. 124 p.
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