The goal of this study was to determine the dynamic stress level on the operating crankshaft of a four cylinder automotive engine by direct measurement of acting torsional and bending stresses as varying the rpm and the engine load. The signals obtained are qualitatively compared with the stresses from a theoretical force analysis. It was found that the measured torsional stress is in good agreement with the stress computed due to cylinder pressure and rotating inertia. On the other hand, the bending stress is dominated by the effect of the cylinder pressure and attains its maximum value near 4250 rpm where one of the superharmonics of the rotation speed coincides with the torsional natural frequency.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dynamic Torsional and Bending Stress Measurement from Operating Crankshaft


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1986



    Publication date :

    1986-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Dynamic torsional and bending stress measurement from operating crankshaft

    Park,Y. / Park,J. / Lee,C. et al. | Automotive engineering | 1986


    Torsional oscillations of a crankshaft

    Morris, J. | Engineering Index Backfile | 1919


    CRANKSHAFT BENDING VIBRATION

    CRITCHLOW, E. FOREST / BEAN, W. T. | SAE Technical Papers | 1947


    An experimental study of a torsional/bending damper pulley for engine crankshaft

    Kinoshita,M. / Sakamoto,T. / Okamura,H. et al. | Automotive engineering | 1989


    An Experimental Study of a Torsional/Bending Damper Pulley for an Engine Crankshaft

    Okamura, Hideo / Kinoshita, Masaru / Sakamoto, Takeshiro | SAE Technical Papers | 1989