Theoretical and Experimental Research on the Importance of Excitation-Soil Tuning in Compaction Equipment Design 650295
The results of theoretical and experimental research are presented to demonstrate the importance of matching or “tuning” the fundamental time parameters of the excitation characteristics of compaction equipment with the time parameters of the soil being compacted. This “tuning” is a very important economic factor in practical situations where large masses of earth materials must be placed and compacted very rapidly to desired specifications. The degree of tuning is expressed as the ratio of the time of loading or excitation to the characteristic time parameter of the soil compactor system. Operational response at proper values of the time ratio may well give maximum efficiency for compactive effort. Fundamental time parameters of the soil as well as the soil compactor system are needed for proper compaction equipment design. These parameters are presented using theoretical analyses of rheologic systems and comparison with static and dynamic response spectra of actual soils.