The System Simulation Analysis On Virtual Prototype Of Hydraulic Excavator

In order to improve the traditional engineering product design process, this dissertation presents and studies the approach of the new powerful CAD-technology 'Virtual Prototype (VP)'. Especially the technique is applied in the field of excavator design because the traditional innovative engineering processes have some limitations in shortening the development cycles and evaluation a design as soon as possible to satisfy the market competition requirement of construction engineering enterprise.First of all is the brief presentation of the basic theory frame of the Virtual Prototype, and the significance and development of VP technology in China and aboard are also related. Chapter 1 demonstrates that the VP technology is the only way to improve the traditional excavator design process.The method to build the virtual excavator prototype is given in this paper. The VP is composed of simulation models of subsystems. The virtual prototyping processes are based on the cooperation of experts from different disciplines and then the final integration of modules from these concurrent tasks.To build multidisciplinary models, the composition of excavator is analyzed according to the theories of modeling and simulation. Through simulation the mechanism system, we get the work scope of excavator and some special data. Analyzing the excavator while digging, we get the force of deferent joints, which is the base for strength analysis of parts. The mechanical system of excavator is build in UG , and the hydraulic system in ADAMS/Hydraulics, realizes interfacing experiment data of hydraulic system and mechanism system in the same interface and accomplishes the simulating design of virtual prototyping entire system of excavator.