ABSTRACT
The analysis of the movement of vibratory rollers during compaction allows evaluating the performance of the compaction. A simplified method for calculating the spring and dashpot constants was proposed by Wolf. This solution assumes that the stresses produced by dynamic loads propagate into the soil within a truncated cone. As described in Geotechnics of Roads Fundamentals, there are several parameters to interpret the performance of vibratory drum compactors. This chapter focuses on two of these parameters: The Compaction Meter Value and the Resonant Meter Value. It describes the procedure for computing the soil–drum interaction for different Young’s modulus. Linking the hysteretic cycles of dynamic loading graphed against drum displacement, and soil reaction graphed against soil displacement allow analyzing the soil–drum interaction. It is important to note that the expressions for ksep and ksep are tangent formulations of the spring coefficients starting at zero load and displacement. This consideration requires special treatment when a cyclic load is applied.
