Abstract：Aiming at the problems of lacking of site physical characteristic data and model foundation for high-performance assembly of aeronautical thin-walled structural component with low stiffness, construction and actualizing techniques for virtual assembly prototype for aeronautical structures with on-site physical characteristics constraint were studied. Firstly, the technical connotation and construction framework of virtual assembly prototype were defined. Its essence was a highly quasi reality digital twin assembly system, which could not only carry out multi-scale assembly geometric and physical quantity simulation in virtual environment, but also analyze and verify assembly performance in advance. Secondly, high fidelity and dynamic construction on virtual assembly prototype for aeronautical thin-walled structure fused with on-site physical characteristics was elaborated from four implementation plans, i.e. multisource heterogeneous assembly data acquisition and processing, multi-class assembly digital twin integrated modeling, synchronous modeling of linking virtual with reality for assembly prototype system, visual modeling of assembly process and assembly quality condition. Finally, the “double line” and “different classification” comprehensive construction measures of virtual assembly prototype were adopted, which could provide the data/model basis for the virtual simulation during the assembly process and the accurate control of assembly quality. With the above research, a solid foundation for active real-time control of assembly quality can be established.
2022, 
