Effect of variation in diameter and pitch of rivets on compressive strength of panels with Z-section stiffeners: 1: panels with close stiffener spacing that fail by local buckling Page: 2 of 17
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3 1176 01364 8788
NACA RB No. L5003
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
EFFECT OF VARIATION IN DIAMETER AND PITCH OF RIVETS
ON COMPRESSIVE STRENGTH OF PANELS
WITH Z-SECTION STIFFENERS
I - PANELS WITH CLOSE. STIFFENER SPACING THAT FAIL
BY LOCAL BUCKLING
By Norris F. Dow and William A. Hickman
An experimental investigation is being conducted to
determine the effect of varying the rivet diameter and
pitch on the compressive strength of 2.S-T aluminum-alloy
panels with longitudinal Z-section stiffeners. The panels
were selected on the basis of available design charts,
and the panel proportions were limited to the region of
these charts in which the panels have the closest stiffer
spacings and the smallest values of width-to-thickness
ratio for the webs of the stiffeners and have such length
that failure is by local buckling. The results showed
that for these panels the compressive strengths increased
appreciably with either an increase in the diameter of
the rivets or a decrease in the pitch of the rivets. Data
are also presented from which the rivet diameter and pitch
required to develop a given stress in the panels may be
The design and analysis of sheet-stiffener panels for
aircraft structures have been the subject of extensive
experimental and theoretical investigations, but the deter-
mination of the size and pitch of rivets for attaching
sheet to stiffeners is a problem that has not been ade-
quately solved. In reference 1 charts and procedures are
presented for the design of Z-stiffened panels to carry
a given intensity of loadIng at a given panel length. The
test data on which these design charts were based, however,
were obtained for an arbitrary diameter and pitch of the
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Dow, Norris F. & Hickman, William A. Effect of variation in diameter and pitch of rivets on compressive strength of panels with Z-section stiffeners: 1: panels with close stiffener spacing that fail by local buckling, report, August 1945; (digital.library.unt.edu/ark:/67531/metadc60974/m1/2/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.