| The traditional engineering mechanical industry lacks of the market competition ability because of the long development period, high cost and aging products. The Virtual Prototype (VP) technology applies a powerful development measure to resolve the problem.In the paper, basing on the features and advantages of the VP technology, aiming at the existing shortage in hydraulic excavator's working device marked PC200, the VP technology is utilized to design and develop the hydraulic excavator. The simulation researches on hydraulic excavator's working device based on the VP technology are carried out from several aspects.In the paper I firstly created the three-dimension models of all hydraulic excavator's parts by Pro/E software and assemblied them later. So we got the virtual prototype model of excavator. Then we got the kinematical model based on Pro/E, dynamical model based on ADAMS and finite element model based on ANSYS. After that I took kinematical and dynamical simulation on the course of excavating and through that I got the working range parameters and joint force curve. We took emphasis on the force analysis of joints linking excavator's working device in two specific conditions. At last I took the finite element analysis on movable arm and front arm. So I got both the displacement and stress contour plots. Using the maximum stress I did the strength checking.The example analysis results show that it is feasible to use the VP technology to design the hydraulic excavator, and the simulation results agree with the practice situation of the hydraulic excavator. The research results in the paper have great guidance value to the engineering practice, and with the further research, they will have wide application and more economics value. |
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