Aluminium Design and Construction - Chapter 11 docx
Aluminium Design and Construction - Chapter 11 docx
... (per bolt) and on their condition. It is given
by the expression:
P
–
f
=nµR
–
(11. 9)
where n=number of friction interfaces and, µ=slip-factor (Section
11. 2.6).
11. 2.5 Bolt tension and reaction ... expressions in Sections 11. 1.4 and 11. 1.7, differ
from those in BS. 8118 . The reason for not following the British Standard
is that the stress values it employs seem inconsisten...
Aluminium Design and Construction - Chapter 9 docx
... general
expression:
(9.16)
Figure 9.14 Four standardized profiles (BS. 116 1).
Table 9.3 Properties of certain standardized shapes
Notes. 1. The sections are standardized in BS 116 1.
2. For section details refer ... ‘Type-R’ sections
In dealing with torsional buckling it is important to distinguish between
‘type-R’ sections and all others. A type-R section is one that consists
entirely...
Aluminium Design and Construction - Chapter 12 ppt
... curve and the
determination of the stress range. British Standard BS. 8118 fails to give
guidance on the fatigue of bolts used in aluminium structures.
12.9.2 Endurance curves for steel bolts
Aluminium ... structure than method (1). It is the approach
most used in aircraft design. British Standard BS. 8118 does not cover
the fail-safe method, and it is beyond the scope of this book....
Aluminium Design and Construction - Chapter 10 pps
... are bisymmetric, radial-symmetric or skew-symmetric
S coincides with G and g=0. For sections entirely composed of radiating
outstand elements, such as angles and tees (‘type-R’ sections, Figure ... giving w
°
=0. In all other
cases, w
°
is non-zero and must be calculated.
Figure 10.16 compares the warping of an I-section (bisymmetric) and
a zed (skew-symmetric). With the zed it is se...
Aluminium Design and Construction - Chapter 8 doc
... p
v1
=buckling stress without tension-field action (Figure 8 .11) , and
v
2
=tension-field parameter (Section 8.3.6).
The section of the end-post must be adequate to resist M and V
simultaneously, when checked ... elastic-perfectly plastic steel-type stress-strain curve. The
effect, that the actual rounded nature of the stress-strain curve has on
the moment capacity, is considered by Mazz...
Aluminium Design and Construction - Chapter 7 pps
... element.
Stress-pattern at failure, and assumed
effective section. N=non-welded,
W=with edge-welds.
Figure 7.5 Slender outstand. Stress-
pattern at failure, and assumed effective
section. N=non-welded, ... outstands is similar, but with a different
ß-scale (about one-third). The scatter shown in the figure results from
random effects including initial out-of-flatness and shape of the st...
Aluminium Design and Construction - Chapter 6 pptx
... material and also non-heat-treatable
material there is negligible dip at A, and k
z3
=k
z1
.
6.4.2 Heat-treated material
Table 6.1 lists proposed k
z
-values for MIG-welded joints in 6xxx and
7xxx-series ... non-heat-treatable alloys, HAZ softening need only be consid-
ered for work-hardened material; it is not a factor with extrusions or
Figure 6.2 Typical hardness plots at a weld in h...
Aluminium Design and Construction - Chapter 5 pps
... All Rights Reserved.
CHAPTER 5
Limit state design and
limiting stresses
British Standard BS. 8118 follows steel practice in employing the limit
state approach to structural design, in place of ... appropriate
scatter-band, with a cut-off at the limiting stress for the material.
Local buckling of a thin-walled cross-section, as distinct from overall
buckling of the member as a whole...
Aluminium Design and Construction - Chapter 4 pptx
... that alloy is supplied.
Aluminium alloys can be either non-heat-treatable or heat-treatable.
The former are available in a range of work-hardened conditions, defined
by an H-number (as in the first ... of work-hardened sheet and drawn tube can
be crudely expressed in terms of its hardness, the standard tempers being
Table 4.1 The seven alloy series
Note. NHT=non-heat-treatable, HT=heat-tr...
Aluminium Design and Construction - Chapter 3 potx
... for non-aeronautical use are usually in the stronger
kind of 6xxx-series alloy. They can be either machined from T6-condition
bar-stock, or forged and then artificially aged (T8-condition). Design
data ... magnetically, the
stainless being non-magnetic (if of the austenitic type).
British Standard BS. 8118 calls for washers to be provided under both
bolt-head and nut. With aluminium...
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