Aluminium Design and Construction - Chapter 3 potx
Aluminium Design and Construction - Chapter 3 potx
... temperature-indicating crayons.
Minimum annealing temperatures are: 1xxx-series, 36 0°C; 3xxx-series,
400°C; 5xxx-series, 35 0°C.
Copyright 1999 by Taylor & Francis Group. All Rights Reserved.
3. 7.4 ... 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-cond...
Aluminium Design and Construction - Chapter 2 potx
... 1.5, 2.0, 2.5, 3. 0, 4.0, 5.0 and 6.0 mm.
Most sheet is produced in non-heat-treatable material (1xxx, 3xxx,
5xxx), and is supplied in a stated temper (such as ‘quarter-hard’, ‘half-
hard’) with ... Cold-reduced strip is
roll-formed to a circular shape and then fed past a welding head to
produce the final product. Such tube is produced in long lengths from
non-heat-treatable coiled str...
Aluminium Design and Construction - Chapter 12 ppt
... Table 12 .3 or 12.4)
may be valid, the designer must specify fatigue-quality welding and
state the necessary level of inspection (Section 3. 3.5). The drawings
should be marked with a ‘Fat-number’, ... of fatigue details (arc-welded) —propagation through weld
Notes. 1. For cases 34 37 the ends of the weld must be ground flush, using run-on and run-off plates.
2. For case 35 the class...
Aluminium Design and Construction - Chapter 11 docx
... 25°C.
3. Columns 3 and 4 give the room temperature curing time to achieve =1 and =10 N/mm
2
, when tested at 23 C.
4. Columns 5 and 6 give typical average strengths when tested at 23 C and 80°C, ... already
been covered under member design in Chapters 8 and 9. Here we just
consider A and B.
11 .3. 2 Basic checking procedure
Looking first at the loading cases (a) and (b), th...
Aluminium Design and Construction - Chapter 10 pps
... becomes:
(10.23b)
Table 10 .3 Shear-centre position and warping factor for certain conventional sections
Notes. 1.Refer to Figure 10.12 for section details.
2. For sections C1 and Z1 symbol f=Dt/BT.
3. I
xx
... 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...
Aluminium Design and Construction - Chapter 9 docx
... except
in the case of the unequal angles SA3 and SA4.
2. Channel and top-hat sections. The shapes covered and the notation, are
shown in Figure 9. 13. For all of these
t
is calculated from the ... convenient nomogram:
x
3
-3 x
2+
Ax-B=0 (9.15)
where
9.6.9 Torsional buckling of struts containing very slender outstands
When the section contains very slender outstands (Section...
Aluminium Design and Construction - Chapter 8 doc
... based on expression (8.6) can
be as much as 36 % too low for the fully compact case and 39 % too low
for semi-compact.
8 .3 SHEAR FORCE RESISTANCE
8 .3. 1 Necessary checks
We now consider the resistance ... 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...
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, ... 7.1 .3) . The pattern for 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-flat...
Aluminium Design and Construction - Chapter 6 pptx
... 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 alloys. These have generally ... roughly taken as:
6xxx-series alloys 3 days
7xxx-series alloys 30 days
If heat-treated material is held significantly below 10°C, the recovery
time will be longer. On th...
Aluminium Design and Construction - Chapter 5 pps
... 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, is covered in Chapter ... (4 .3) .
For the stress p
a
, we generally follow the British Standard and take the
mean of proof and ultimate stress (although some codes take p
a
=f
u
). Again,
there is a...
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