The Modeling, Evolutionary and Application of Quasi-physical Virtual Assembly

doi:10.3901/JME.2018.11.061

Abstract

Abstract: Virtual assembly based on ideal digital form can be used in the design stage to check the assembly sequence, get the assembly path, check the gap, etc. However, single-piece, complex large component parts of the field assembly, one-time assembly success is currently facing the biggest challenge. A new virtual assembly technology which fusing 3D geometric model and mass measurement data-QVA (quasi-physical virtual assembly), is proposed and presented. Its information model based on fat-model is explored, its modeling method on geometric feature model and assembly constraint model is studied, and then the definition, expression and fusion of the quasi-physical assembly model is given. By establishing the registration rule tree of the global context assembly feature and revealing the registration mechanism of QVA, finally obtain the generally optimizing way to guide practical assembly. Finally, an aerospace cabin structure is taken as example, and the test results confirm the feasibility and efficiency of the quasi-physical virtual assembly technology in the practical application level.

Key words: digital measurement, fat-model, quasi-physical, virtual assembly

CLC Number:

TP391

BAO Jinsong, LI Zhiqiang, XIANG Qian, WU Dianliang, ZHENG Xiaohu. The Modeling, Evolutionary and Application of Quasi-physical Virtual Assembly[J]. Journal of Mechanical Engineering, 2018, 54(11): 61-69.

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