Computation and Measurement of Vibrations Occurring in Bucket-wheel Excavators.

Theoretical and experimental investigations carried out on a bucket-wheel excavator have shown that the principal vibrations of such equipment can be predetermined with sufficient accuracy with the aid of a finite-element computer program. In this way, harmful resonance excitations can be prevented, and dynamical responses and the associated stresses can be kept within acceptable limits. A comparison of the measuring results has shown that large-size units have basically similar dynamic behavior - the vibrations are, in general, nonperiodical, irregular (stochastic).