Automobile rubber isolator was subjected to random load cycle for a long time in the service process, and its main rubber material for vibration isolation was prone to fatigue failure. Since the traditional Miner damage theory overlooked the load randomness, it had a prediction error problem. In order to improve the prediction accuracy of rubber fatigue life, the traditional Miner damage theory was modified by random uncertainty theory to predict the rubber fatigue life under random load. Firstly, the rubber dumbbell-shaped test column, which was vulcanized from rubber materials commonly used in vibration isolators, was taken as the research object. The uniaxial fatigue test of rubber under different strain amplitudes and strain mean values was carried out. Then the fatigue characteristic curve of rubber with equivalent strain amplitude as the damage parameter was established. Secondly, the load spectrum of the rubber mount of an automobile powertrain was collected from different road conditions in a test field. Then the probability distribution of equivalent strain amplitude was deduced by using rain flow counting and mathematical statistics. Finally, according to the rubber fatigue characteristic curve and the probability density function of equivalent strain amplitude, the modified Miner damage theory was adopted to calculate the fatigue life of rubber under the collected road load spectrum. Based on the measured fatigue life of rubber, the prediction effects of the two damage theories were compared. The results showed that the prediction error was reduced by 30.89% compared with the traditional Miner damage theory.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Fatigue Life Prediction Method of Rubber Material for Automobile Vibration Isolator under Road Load Spectrum


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Shangguan, Wen-Bin (Autor:in) / Pan, Xiaoyong (Autor:in) / Zhu, Xijun (Autor:in)

    Kongress:

    WCX SAE World Congress Experience ; 2022



    Erscheinungsdatum :

    2022-03-29




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A Fatigue Life Prediction Method of Rubber Material for Automobile Vibration Isolator under Road Load Spectrum

    Zhu, Xijun / Pan, Xiaoyong / Shangguan, Wen-Bin | British Library Conference Proceedings | 2022


    A Study on Editing Method of Road Load Spectrum of Automobile Rubber Isolator Using Time-Frequency Domain Methods

    Zhu, Xijun / Shi, Wei / Qian, Xuepeng et al. | British Library Conference Proceedings | 2022


    A Study on Editing Method of Road Load Spectrum of Automobile Rubber Isolator Using Time-Frequency Domain Methods

    Wang, Fei / Shi, Wei / Shangguan, Wen-Bin et al. | SAE Technical Papers | 2022



    RUBBER COMPOSITION, TIRE, CONVEYOR BELT, RUBBER CRAWLER, VIBRATION ISOLATOR, SEISMIC ISOLATOR, AND HOSE

    SHODA YASUHIRO / INUTSUKA SHOKO / TANEMURA SHUN et al. | Europäisches Patentamt | 2019

    Freier Zugriff