In this paper, taking AM-50 Road Header as an example, the methods of structural dynamic modification optimization for road headers are studied using experimental modal analysis and physical parameters analysis. The machine's modal model and lumped mass model are established and the vibration response simulation is calculated for the two models with the load spectral measured. On the above basis, the dynamic parameters of the models are optimized and some useful results have been obtained. The research methods in this paper can be used for the reference to the other lager type mining machines.
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