Aluminium Design and Construction - Chapter 8 doc

... 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 as in Section 8. 4. 8. 7 ... M varies Figure 8. 7 Asymmetric bending example. Comparison between BS 81 18 and the more rigorous treatment of Section 8. 2.9, covering the fully-compact case (FC) and t...

Ngày tải lên: 22/07/2014, 18:22

... parent metal, and k z1 = softening factor (Section 6.4.1). For the non-heat-treatable alloys it is found from: p f =0.5(f oo +f uo ) (11.18b) where f oo and f uo are the proof and ultimate of ... 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), the basi...

Ngày tải lên: 22/07/2014, 18:22

... BS .81 18 provides a 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 ... particular Figure 9.17 Reduced moment resistance of a fully-compact square box cross-section in the presence of axial load: (1) BS 81 18 rule (equation 9. 18) ; (2) Direct plastic calcula...

Ngày tải lên: 22/07/2014, 18:22

... Structural design Standards—Europe. I. Title TA690.D855 19 98 624.1&apos ;82 6–dc21 98 39235 CIP ISBN 0 419 15710 7 (Print Edition) ISBN 0-2 0 3-0 281 9 -8 Master e-book ISBN ISBN 0-2 0 3-1 344 9-4 (Glassbook ... webs 8. 6 Web reinforcement 8. 6.1 Types of reinforcement 8. 6.2 Tongue plates 8. 6.3 Transverse stiffeners 8. 6.4 End-posts 8. 7 Lateral-torsional buckling 8....

Ngày tải lên: 22/07/2014, 18:22

... curve and the determination of the stress range. British Standard BS .81 18 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 .81 18 does not cover the fail-safe method, and it is beyond the scope of this bo...

Ngày tải lên: 22/07/2014, 18:22

... 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 ... that is inconvenient for a designer to use [29]. British Standard BS .81 18 does it in a more user-friendly form. Here we present an improved version of the British Standard approach, extended...

Ngày tải lên: 22/07/2014, 18:22

... 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...

Ngày tải lên: 22/07/2014, 18:22

... 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...

Ngày tải lên: 22/07/2014, 18:22

... All Rights Reserved. CHAPTER 5 Limit state design and limiting stresses British Standard BS .81 18 follows steel practice in employing the limit state approach to structural design, in place of ... tensile properties for the material and nominal dimensions for the cross-section. Suggested rules are given in Chapters 8, 9 and 11, based largely on BS .81 18. Alternatively the...

Ngày tải lên: 22/07/2014, 18:22

... relation between temper designation (H-number) and minimum tensile strength (f u ), as laid down in BSEN.515. The fully-hard temper (H 18, H 28 or H 38) , referred to as Hx8, is described as the ‘hardest ... virtually standard worldwide [12]. For any given material, it employs a two-part reference number, e.g. 3103–H14, 6 082 –T6 or 5 083 –0. The four-figure number before the hyphen define...

Ngày tải lên: 22/07/2014, 18:22