Design method of similar structural member for simulating blade root stress level

The invention discloses a similar structural member design method for simulating the blade root stress level, and relates to the technical field of experimental testing. The method comprises the following steps: performing full-size finite element analysis on a component according to geometric dimensions and boundary conditions to obtain full-size stress-strain distribution of the component; according to the boundary conditions, finite element analysis is conducted on the initial class structural part, and stress-strain distribution of the class structural part is obtained; based on the full-size stress-strain distribution of the component and the stress-strain distribution of the similar structural component, determining the similar structural component; and adding the class structural component into the class structural component database. According to the method, the class structural component design is completed based on the full-size stress-strain distribution of the component and the stress-strain distr