Abstract: The present invention discloses a blade dimensional chain modeling method considering mortise-tenon connection, which relates to the technical field of aerospace component assembly deviation analysis. The blade dimensional chain modeling method described in the present invention can be used not only for the position deviation prediction in the initial state of the blade tip after assembly, but also for the deviation analysis of any position of the blade. The method is an explicit mathematical model with the characteristics of simplicity and high efficiency of solution.

Abstract: The present invention is applicable to the field of aerospace component assembly deviation analysis, and provides a magazine assembly deviation modeling method to characterize the uncertainties in the local multi-parallel dimensional chains in the magazine bolted assembly structure, and to predict the spatial attitude deviation as well as the statistical distribution of the assembled magazine by tolerance analysis and randomness simulation of the assembly. The magazine assembly deviation modeling method described in the present invention can characterize the transfer and accumulation of complex three-dimensional tolerances in the multi-level magazine assembly process.