Nonlinear dynamic responses of new electro-vibroimpact system

In this note, we describe dynamics of a new vibro-impact system, which is capable of generating large impact forces and consequently enhanced penetration rates. It consists of a solenoid, connected in series to an RLC circuit. A solid-state relay switches power supplied to the solenoid in accordance to a train of square waves supplied by a function generator. A metal bar, made from laminated sheets, oscillates within the solenoid, and is connected to the main structure by means of a spring. This part of the design facilitates the vibratory motion. The forward progression of the mechanism is impeded by frictional force. The variety of system responses is described, so as to identify the qualitative dynamic behaviour which produces the fastest progression rate.