The Advanced Highway Maintenance and Construction Technology (AHMCT) Research Center is a cooperative venture between the University of California at Davis and the California Department of Transportation (Caltrans). The research and development projects have the goal of increasing safety and efficiency of roadwork operations. Mobile cranes are common heavy vehicles that are transported on roadways. Quantifying the loads generated by cranes will develop an understanding of the damage they cause allowing a more efficient regulation of axle load limits. This report describes the simulation of cranes using a boom support vehicle, with emphasis on dynamic road loads. In developing a computer simulation, a pitch plane model of the crane was developed. The final computer simulation is a tool to help develop an understanding of dynamic road loads. A finite element model is used to characterize the motion of the boom. Other components of the system are treated as rigid bodies. The simulation can characterize both the traditional and modern styles of mobile cranes. The traditional style uses a walking beam suspension on the carrier and a leaf spring suspension on the dolly. The modern cranes implement a hydro-pneumatic carrier suspension and an air ride suspension on the dolly. The model presented here is purely theoretical. However, the fundamental dynamics of the system are captured through the implementation of commonly used modeling techniques. This model provides insight to the dynamic road loads generated by mobile cranes. The simulation results show that modern cranes generate significantly lower dynamic loads then traditional cranes. This indicates that there is a need to regulate axle load limits in a manner that compensates for different suspension systems.


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    Title :

    Simulation of Cranes Using a Boom Support Vehicle


    Contributors:

    Publication date :

    2002


    Size :

    203 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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