EXCITING MECHANISM FOR CENTRIFUGAL FORCE LOADING EXPERIMENTAL DEVICE

PURPOSE:To execute excitation, while giving a centrifugal acceleration to a specimen, by using a through-type piston rod and a rocking axis, supporting pivotally a sample supporting tool by a rotary arm, using said rod as a pivotally supporting axis of the sample supporting tool, and also, and operating it as a power transmission member of an actuator for excitation. CONSTITUTION:When a rotary arm rotates and centrifugal force pressure is applied, a static pressure bearing 21 rotates, and a sample supporting tool 5 is rocked to a horizontal attitude. In this state, when a hydraulic fluid accumulated in an accumulator 8 is led into a cylinder 19 of a hydraulic actuator 6, since the supporting tool 5 is fixed against the cylinder 19, a piston rod 20 is brought to a reciprocating motion in the direction as indicated with an arrow X against the cylinder 19, and the supporting tool 5 is brought to a reciprocating motion in the direction as indicated with an arrow X against the rotary arm 4. In such a way, by the actuator 6 consisting of the cylinder 19, the piston rod 20 and a piston P, the supporting tool is excited in the reciprocating direction as indicated with an arrow.