Page 607 - Aircraft Stuctures for Engineering Student

588 Index

Strain cont. Stress, strain and displacement relationships
volumetric strain 26 for open and single cell closed section
Strain energy 68-71, 142, 143, 166 beams 291-5
in simple tension 69 Stress-strain relationships 24-8, 37
Strain gauge rosette 29 Structural constraint 443-85
Stress 3-16 constraint of open section beams 465-85
as a tensor 5 general systems of loading 479-82
complex stress systems 10-16 moment couple (bimoment) 482
components at a point 4, 6 position of centre of twist 470,471
definition 3,4 subject to distributed torque loading
maximum shear stress 12 478,479
Mohr's circle 12-16 torsion-bending constant, 470-4
normal or direct stress 4 torsion of a beam of arbitrary section
notation for stresses 5-7 467-78
plane stress 8, 9 torsion of an I-section beam 465-7
principal stresses, planes 11, 12 wire analogy 472-4
resultant of shear and normal stress 4 general aspects 443-5
shear stress 4 eigenload 444
sign conventions 6 flexural axis 444
stresses on inclined planes 10, 11, 12-14 zero warping axis 444
tensile stress 3 shear lag 455-65
Stress analysis of aircraft components beam subjected to combined bending
362-432 and axial load 461-5
cut-outs in wings and fuselages 415-25 beam supported at corner booms only
fuselages 374-80 460,461
bending 375, 376 six-boom beam subjected to shear
shear 376-9 455-60
torsion 379, 380 shear stress distribution at the built-in end
fuselage frames and wing ribs 406-15 of a closed section beam 445-8
laminated composite structures 425-32 thin-walled rectangular section beam
composite plates 429-32 subjected to torsion 449-54
elastic constants 425-9 direct stress distribution 453
law of mixtures 426 idealization 449
tapered beams 362-74 rate of twist 454
beams having variable stringer areas shear stress distribution 453,454
371-4 warping 453
open and closed section beams Structural idealization 327-41
366-71 booms 328
single web beam 363-6 effect of idealization on analysis 331-41
Wings 380-405 bending of open and closed section
bending 381-3 beams 331,332
deflections 404,405 curved web with constant shear flow
idealized three-boom shell 380, 381 336-8
method of successive approximations shear of closed section beams 338-40
395-404 shear of open section beams 332-8
shear 387-92 torsion of open and closed section
shear centre 392 beams 340
tapered wings 392-5 of a panel carrying a linearly varying
torsion 383-6 direct stress 328, 329
Stress concentrations 63, 258 of a wing section 327,328
Stress functions 38, 39 Structural instability 153-97