The method of fatigue life evaluation and validation testing under operational conditions is a prerequisite to achieve optimal designs with respect to weight and long-term durability of the structure considered. Criteria like driving behavior and braking performance, influenced by global stiffness as well as fatigue life evaluation were taken into account when optimizing a forged 6.5 front axle beam of a heavy truck. The procedure for weight optimization includes the following steps: Stress analysis e.g. using strain gage techniques and/or Finite Element Method. Road load data acquisition and derivation of design spectrum describing customer usage. Fatigue testing under constant amplitude and/or variable amplitude loading to establish component related SN-curves and/or fatigue life curves. Fatigue life evaluation using damage accumulation hypothesis (Miner's Rule). Optimization and weight reduction (in this case 14 % weight savings were achieved) based on fatigue life evaluation. Validation testing using multi-axial computer controlled, servohydraulic test rigs.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Procedure for design optimization and durability life approval of truck axles and axle assemblies


    Additional title:

    Verfahren zur Entwurfsoptimierung und zum Lebensdauernachweis von Nutzfahrzeugachsen und Achsenbaugruppen


    Contributors:

    Published in:

    SAE-Papers ; Nov ; 1-12


    Publication date :

    1989


    Size :

    12 Seiten, 16 Bilder, 1 Tabelle, 25 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Procedure for Design Optimization and durability Life Approval of Truck Axles and Axle Assemblies

    Fischer, Gerhard / Neugebauer, Juergen R. / Grubisic, Vatroslav | SAE Technical Papers | 1989


    Procedure for design optimization and durability life approval of truck axles and axle assemblies

    Neugebauer,J.R. / Grubisic,V. / Fischer,G. et al. | Automotive engineering | 1989


    Comparison of Procedures for Experimental and Theoretical Durability Approval of a Truck Axle

    Dini, A. / Rupp, A. / SAE | British Library Conference Proceedings | 1998


    Comparison of procedures for experimental and theoretical durability approval of a truck axle

    Dini,A. / Rupp,A. / Fraunhofer-Inst.f.Betriebsfestigkeit,LBF,DE | Automotive engineering | 1998