Abstract:In order to study the key technology involved in the digital mock-up research and development of complex products, aeroengine is taken as example to analyze the methods of modeling parts, assembly and associated design in the digital prototype. Firstly, 3D models of aeroengine parts are established through the CAD software. Then, for the purpose of studying the lightweight, constrains, interference and other problems occurred in the assembly process, the sub-assemblies and full assembly of the engine prototype are conducted based on those 3D models. Finally, by means of utilizing WAVE technology,the associated parametric design of the blisk is achieved.By replacing the physical prototype with the digital mockup,it promotes the design and manufacturing development of high-quality, high-efficiency and low-cost products.