Feasibility Analysis of Double-Hit Hammering for Pile Foundations

The problem of the realization of a double hit hammer for inserting piles in the ground as needed in construction has been addressed. It is mainly shown that in parameter space of the mechanical system, there exists an operating window where the single cycle behavior corresponding to one stroke of the power system can be repeated in a stable periodic behavior with period equal to the single cycle one. As the applied control is a simple one, it would be of interest to consider technical experiments to check the usefulness of the concept.