In this study, the mechanisms that cause bush loosening and rotation failure were studied on the connecting-rod small end of a high-power-density engine. Using the thermoelastic plasticity model and the thermomechanical coupling method, the stress field and the assembly contact force of the connecting-rod small end were predicted by considering four different loading conditions: first, the initial loading condition; second, the thermal loading condition; third, the mechanical loading condition; fourth, the unloading condition. This process showed the effects of the initial interference fit, the operating temperature and the wall thickness of the bush on the assembly contact force. It was found that, first, a large interference leads to a small assembly contact force after unloading, second, a higher operating temperature significantly reduces the assembly contact force and, third, the wall thickness of the bush has little influence on the assembly contact force. In conclusion, a high operating temperature is the main cause of bush loosening and rotation. This conclusion was validated by the experimental results. On the basis of this study, it is suggested that the operating temperature is limited in order to maintain the reliability of the connecting-rod small end.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Calculation and study of the failure of the connecting-rod small end based on thermoelastic plasticity


    Beteiligte:
    Chen, Guohua (Autor:in) / Liao, Ridong (Autor:in) / Jiang, Xue (Autor:in)


    Erscheinungsdatum :

    2017-09-01


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Thermoelastic Verification

    Appel, Simon / Wijker, Jaap | Springer Verlag | 2021


    Thermoelastic stress analysis

    Cummings, B. | Tema Archiv | 1985


    Modelling for Thermoelastic

    Appel, Simon / Wijker, Jaap | Springer Verlag | 2021


    Thermoelastic stress concentrations.

    BECKER, H. / BIRD, F. | AIAA | 1967