To solve the problem about the design optimization process interruption due to geometric dimensional interference in the process of structure optimization design

a method(coordinate correlation method) was established

making suitable for optimization design of structure modeling. This method was applied to aeroengine tenon connection structure optimization design; the process was smooth

and structural modeling of 790 times was completed without any problems due to geometric changes. The optimization design results show that the maximum stress on the groove throat area drops by 19.1% though the changes before and after optimization of tenon connection structure shape are not big. The stress levels are significantly lower

and the structure model meets the engineering requirements.