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Standardisierte mehraxiale Lastabläufe für Bauteile von PKW Radaufhängungen

Standardized multiaxial load sequences for car wheel suspension components. Car loading standard multiaxial -CARLOS multi-
: Schütz, D.; Klätschke, H.; Heuler, P.
: Fraunhofer-Institut für Betriebsfestigkeit -LBF-, Darmstadt

Darmstadt, 1994, 108 pp. : Abb.,Tab.,Lit.
Bericht - Fraunhofer-Institut für Betriebsfestigkeit, FB-201
Fraunhofer LBF ()
Betriebsmessung; car; CARLOS multi; correlation; Einsatzprofil; fatigue test; Korrelation; Kraftfahrzeug; mehraxial; multiaxial; omission; operating profile; Radaufhängung; Schwingfestigkeitsversuch; service measurement; standardized load-time history; Standardlastfolge; wheel suspension

Standardized load-time histories have been used, since servohydraulic testing was introduced, to facilitate the comparison of the test results. Standardized uniaxial load sequences have been developed already for tests with fatigue-prone components of aircraft, helicopters, offshore-structures, wind turbines, rolling mill drives and car-wheel suspensions (CARLOS uniaxial). CARLOS multi is the first multiaxial standard for vertical, lateral, braking and longitudinal loads acting simultaneously on car front-wheel suspensions. It has been derived in cooperation with sixteen companies. The load-time histories are based on measurements with eight cars on public roads (about 5400 km) and the same operating profile which had also been agreed for CARLOS uniaxial. The load-time histories were generated with the help of the so-called guide function concept which guarantees the correct correlations between the four forces. By reducing the load histories to their fatigue-relevant contents the leng th of the return of 40000 km amounts to only approximately five hours. The standard load sequences are time histories with a constant sample rate and stored on PC streamer cartridges which are available on request from LBF.