A test rig for measuring the quasi-static performance of tandem suspensions in the laboratory was build and measurements on a standard tandem steel suspension showed to have high effective stiffness in bounce and poor load equalization. Introducing rubber blocks into the sliding contacts significantly reduced the hysteresis in bounce and improved the load equalization performance. Simple models of the trailer indicated that the spring stiffnesses could be halved without significant detrimental effect on static roll-over threshold and static deflection. A validated two-dimensional articulated vehicle simulation was used to study the effect on dynamic tyre forces of the rubber block modification, and the effect of softer springs and additional hydraulic dampers on the trailer suspension. When rubber blocks were used to eliminate friction at the spring-ends, additional viscous damping was found to be necessary. However, it was estimated that the damping needed to minimize the DLCs (dynamic load coefficient) requires an impractically large number of dampers if standard or half-stiffness springs were used. The effect of fitting rubber blocks, half-stiffness springs and two hydraulic dampers per axle side was predicted by simulation. The trailer axle DLCs were predicted to reduce by approximately 31 %, and the road damage by the trailer axles to reduce by 13 %. The trailer suspension was successfully modified to incorporate these modifications. The modifications were entirely bolt-on and could be fitted to vehicles in service. Averaged over the five test speeds, the measured trailer axle DLCs were reduced by 15,5 % and the measured road damage by the trailer axles was reduced by 5,2 %.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Modification of a heavy vehicle suspension to reduce road damage


    Additional title:

    Eine modifizierte Federung von Schwerlastfahrzeugen zur Minderung der Fahrbahnschädigung


    Contributors:
    Cole, D.J. (author) / Cebon, D. (author)


    Publication date :

    1995


    Size :

    12 Seiten, 15 Bilder, 1 Tabelle, 19 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Modification of a Heavy Vehicle Suspension to Reduce Road Damage

    Cole, D J / Cebon, D | SAGE Publications | 1995


    Modification of a heavy vehicle suspension to reduce road damage

    Cole,D.J. / Cebon,D. / Univ.of Cambridge,Univ.Engng.Dep.,GB | Automotive engineering | 1995



    Vehicle suspension design to reduce road damage.

    Cady,J.B. / Aston,R.A. / British Lyland | Automotive engineering | 1975


    Vehicle suspension design to reduce road damage

    Cady, J. / Aston, R. | Tema Archive | 1975