According to the characteristics of aero product

the industry product must be as simple and light as possible under the premise of ensuring the load performance.By using the finite element analysis software ANSYS

a nonlinear contact model about a new type of composite shaft-hub connection structure of propeller is established.Based on the model

a optimization about the elastic ring

part of the shaft-hub connection structure

which defines the semi-cone angle and the width of the elastic ring as the design variables

the stress of the elastic ring as the state variable is carried out.The optimization results provide a theoretical basis of designing a composite shaft-hub connection structure which meets the requirement of aero product.