ABSTRACT
Extensive field testing and research have shown that there are a number of hauler operating factors that contribute to this structural fatigue damage: condition of the haul road, size of the payload, turning maneuvers, and operation of the suspension system. Run a fully loaded hauler on a smooth road and the hauler's structural components will be subjected to little stress. The effect of payload size or stress cycle magnitude becomes most evident under overload conditions. The structural components of any hauler are designed to cope reasonably well with most of the stresses produced by rated load shifts. Isolation is the energy absorption function of the suspension strut which protects the operator and structural components from the haul road variations and changes in the sprung mass momentum. The performance of this design, therefore, can be predicted with reasonable accuracy. The silicone strut is also noted for its exceptional stability and consistency of performance over extended time periods.
