Wind turbine blade static analysis method

Abstract

The invention relates to a wind turbine blade static analysis method. The method is characterized by comprising steps: a blade model narrowed with equal proportion is adopted for carrying out static force test and static force calculation, material performance of the blade is corrected through correlation analysis on the two, the corrected material data are applied to a blade which is analyzed or estimated actually, the actual blade is calculated, and static parameter of the blade under the effect of concerned load. As for the researched and designed wind turbine blade, the method can be used for accurately predicting various structural response data of the blade under the effects of limit load and other static load, and the response situations of the prior blade under the effects of the static load can be estimated. According to the method, at the beginning when the blade is designed, various structural response data of the blade under the effects of limit load and other static load can be accurately mastered, structure optimization can be carried out in the case of design, and the method can also be applied to static estimation on a large blade which is already produced or in operation.

Description

Technical field [0001] The invention relates to the technical field of wind power generation in the mechanical industry, in particular to a static analysis method of wind turbine blades. Background technique [0002] Wind turbine blades work in the field environment and are subjected to complex and random external environments and working conditions. The problem of damage to the blades is an important content of attention in the design, manufacture and operation of wind turbine blades. In the design of wind power blades, wind power blades are generally required to have a service life of 20 years. In such a long service period and harsh working environment, wind turbines often have to operate under a variety of loads, among which the ultimate load is a very serious factor that damages the performance of the blade. The study of the structural response of the blade under the ultimate load is an issue of great concern in the process of blade design, manufacturing, and operation. In...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in the static calculation of the existing blades, such as the inability to accurately determine the material properties, the present invention aims to provide a static analysis method