Mechanical-Hydraulic Co-Simulation on Work Device of Hydraulic Excavator

In order to get the hydraulic excavator mechanical-hydraulic coupling characteristics, the models of hydraulic and mechanical system are built in AMESim and Virtual Lab Motion. By the joint simulation interface, mechanical and hydraulic models can exchange data in time. The characteristics of excavator work device are analyzed in the aspects of cylinder movement situations and pressure changes as shown in Fig. 4 and Fig. 5. The max pressure exists in the arm cylinder and the value is 29.2MPa, which is smaller than the relief pressure. The excavator can work normally under the design load.