Wing-box structure parameter sensitivity analysis method based on ellipsoid model

The invention provides a wing-box structure parameter sensitivity analysis method based on an ellipsoid model, and relates to the field of aircraft structure design. The structure parameter sensitivity analysis method based on the ellipsoid model is provided for a case where aircraft wing-box structure design parameter information is not sufficient, and an analytic solution of structure parametersensitivity is deduced for a case where a structure function function is linear. According to the method, sensitivity indexes of wing-box structure parameters under the ellipsoid model are defined, ananalytic solving method of the parameter sensitivity in the case where the wing-box structure function function is linear is deduced, and correctness and validity of the analytic method are proved bywing-nine-box structure sensitivity analysis. An analysis result of the method has important significance for reliability analysis and structure change design of a wing-box structure. 本发明提供了种基于椭球模型的机翼盒段结构参数灵敏度分析方法，涉及飞机结构设计领域，针