During operation, the bucket wheel excavator (BWE) has developed bad dynamic behaviour, plastic deformation and structural failure. After performed experimental-numerical analysis, resonant dynamic behaviour of the discharge boom has been confirmed. Adding a new tension bar has increased the dynamic stiffness of the discharge boom, and so the resonant behaviour has also vanished.
The numerical model is carried out by finite element method and the experiment is carried out by measuring the vibration on a pre-determined number of characteristic locations. The experiment, among other things, has confirmed the results of the numerical analysis.
Keywords: bucket wheel excavator, structural failure, dynamic behaviour