ESDU 08007:2009

$62.40

Strength of Lugs Under Oblique Load

Published By	Publication Date	Number of Pages
ESDU	2009-11	18

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Category: ESDU

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INTRODUCTION

This Data Item provides a method to calculate the minimum load
to cause either failure by rupture or maximum permissible permanent
deformation of parallel-sided and tapered lugs under in-plane
oblique loading applied at an angle ? to the axial (x-) direction.
The method is based on the analyses presented in Derivation 1 and
Derivation 1 and 4 of ESDU 91008* and ESDU 06021^†
respectively and is applicable to round- and square-ended lugs made
of ductile metallic materials. Lugs fabricated from brittle
materials are not covered by the Item.

Section 2 of this Item states the empirical interaction formula
for the calculation of the load to cause failure either by rupture
or maximum permissible permanent deformation of parallel-sided and
tapered lugs under in-plane oblique loading. Values of the elastic
stress concentration factor, K'_e, for
particular lug geometries and pin/lug fits are given in ESDU
81006^‡ and its significance is explained in Section
2.3.1 of ESDU 91008*.

* ESDU 91008, "Strength of lugs under axial load".

^† ESDU 06021, "Strength of lugs under transverse
load".

^‡ ESDU 81006, "Stress concentration factors. Axially
loaded lugs with clearance-fit pins".