Abstract:

ESDU 06021 provides data for use in determining the load to cause failure by rupture or maximum permissible permanent deformation of parallel-sided and tapered lugs under in-plane transverse loading. The term rupture is taken to denote failure in the lug by fracture of the lug material in shear. The term permanent deformation denotes that the lug material is strained beyond the elastic range of the lug material resulting in an irrecoverable permanent set. The data are provided in the form of two figures. They are applicable to round- and square-ended lugs made of ductile metallic materials. Lugs fabricated from brittle materials are not covered by the Item. Most of the data given in the Item have been obtained from both material and geometric non-linear finite element analyses supported and verified by experimental data. A full description of the theory on which the analysis is based and the general application and limitations of the analysis are given, along with a worked example. For data relating to lugs under in-plane axial and oblique loading, see ESDU 91008.