Efficient Modeling of Extensible Cables and Pulley Systems in ADAMS

A new method has been developed for accurately and efficiently modeling string-like cable components that change length during an event. String-like components are flexible elements that only support tension loads, not compression nor bending. The method is also applicable to many and various kinds of ropes, tapes, chains and belts. It includes the effects of both variable mass and variable stiffness. A new pulley model, capable of non-planar input and output, has also been developed for connecting such cables (rigid, flexible or extensible) to other parts of a modeled system. This method has been tested on an aircraft carrier arrestment problem which includes significant high and low frequency cable dynamics.