Abstract: The decomposing method of multi－body contact system is put forward, which is applied to decompose the large contact system of rotary kiln into the contact system between shell and tyre, between tyre and roller, and between tyre and roller axle. By setting forth contact element at the interference joint, the contact system between roller and roller axle is solved with FEM method, and the mechanical property of roller and roller axle are obtained, which will supply the quantum index for evaluating the mechanical status of roller and axle, and provide basis for the prescient maintenance of rotary kiln.
