Narrow Results

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.

Aiming at the problem of the optimization design on the hydraulic excavator boom, the research about the boom's comprehensive performances under the condition of bucket digging was put forward. A method of using the ISIGHT optimization platform to comprehensively integrate Pro/E and ANSYS was introduced to conduct a multi-objective collaborative optimization on boom. Adopted the hybrid optimization strategy of the combination between DOE and gradient optimization to intelligently explore the design issues, and continuously selected new initial values to conduct a automatically simulation and optimization. The results indicate that this method can use ISIGHT optimization software to automatically search the Pareto set to meet the boom's performance requirements, then gain the purpose of lightweight and vibration attenuation for boom, which provides some references for practical applications.