Wing Rib Stress Analysis of DLR-F6 aircraft

Abstract

A wing rib plays a vital role on the geometry, shape and the construction of the aircraft wing structure. Wing ribs are in the form of aerofoils and impart required shape to the wing. Wing ribs are also used to reduce the length of the stringers they are used to support the skin-stringer combination. This paper explores the complete stress analysis of wing rib of DLR-F6 aircraft subjected to different loads. There are two different methods used in the design and analysis of the wing rib used in the DLR-F6 aircraft. There are two different approaches used in the design of aircraft wing rib. They are shear resistant plate girder and incomplete diagonal tension field. The deformations and the stresses in the ribs due static loads are calculated using Ansys software. The von-misses failure stresses and the deformations are within the allowable limits and the design is found to be safe under static loads.