ABSTRACT

In this paper the implementation of a Proportional-Integral-Derivative (PID) controller is presented to drive the loading of structures within the framework of explicit solver. Such approach is especially necessary for the system in which the initiation of damage results in the snap-back, i.e., the initiation of damage causes a reduced system deformation (in certain points) with a reduced load. The PID controller is utilised within the framework of MARS software and several examples are provided to demonstrate the capability of current implementation.