Abstract
A basic concept of stiffness and damping control for truss structures using axial member actuators with a latch mechanism is investigated. When the structure is subjected to disturbance forces, the axial member actuator can drastically change to a very low stiffness by releasing the installed latch mechanism, and this low stiffness is effectively used for structural control. After control, the structure recovers its stiffness through the latches of the member actuators. The basic aspects of this control idea are demonstrated through numerical simulation of a hypothetical two-dimensional truss beam and an experiment with a model truss beam structure.
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