ESDU 71011:2008

$62.40

Stresses Due to Interference-Fit Pins and Bushes in Plates, Strips or Lugs

Published By	Publication Date	Number of Pages
ESDU	2008-11	15

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Category: ESDU

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INTRODUCTION

This Item presents data on the elastic stresses arising in flat
plates, bars, strips or lugs from the insertion of a circular
interference-fit pin or bush of similar or different material.
Section 3 deals with solid pins, Section 4 deals with bushes and
Section 5 deals with the juxtaposition of two identical
interference-fit pins or bushes.

The data are based upon two-dimensional analyses and therefore
only give the average stress through the thickness of the plate or
strip. Local deviations away from the average value are unlikely to
be significant except perhaps where taper pins are used.

The data apply strictly to isotropic materials that obey Hooke's
law, but may be used without significant error for most engineering
materials. If during loading of the assembly the limit of
proportionality of one (or both) of the materials is exceeded the
residual stresses due to the interference-fit will be reduced. It
should be noted that the degree of interference will be
considerably reduced if significant creep takes place.

If the interference-fit pin or bush is additionally held, for
example by means of a taper pin or a screw inserted from the side
or inserted parallel to the centre line on the interface, the
stress distribution will alter and the data of this Item will not
be applicable.

Throughout this Item the term "bars or strips" applies to bodies
having solid rectangular sections.