634 Index
Columns,inelasticbuckling(continued)
reducedmodulustheory,260–262
tangentmodulus,259
tangentmodulustheory,262
primaryinstability,253
secondaryinstability,253
slendernessratio,255
stabilityofbeamsundertransverseandaxialloads
(beam-columns),266–270
Combinedopenandclosedsectionbeams,529–535
bending,529
shear,529–532
torsion,533–534
Compatibilityequation,24–25
Complementaryenergy,seeEnergymethods
Complementaryshearstress,8
Componentsofstress,6
Compositematerials,331–333
carbonfiberreinforcedplastics(CFRP),332
glassreinforcedplastic(GRP),331
Connections,seeStructuralcomponentsofaircraft
Crackpropagation,seeFatigue
D
Deflectionofthinplates,seePlates
Deflectionofthin-walledbeamsduetobending,shear
andtorsion,553–556
Deflectionsofbeamsduetobending,441–456
Determinationofstrainsoninclinedplanes,25–27
Determinationofstressesoninclinedplanes,10–14
Diagonaltension,seePlates
E
Effectivelengthofacolumn,seeColumns
Elasticity
basicelasticity,3–41
torsionofsolidsections,65–82
two-dimensionalproblems,45–60
Energymethods,111–158,270–274
bendingofthinplates,241–249
energymethodforthecalculationofbucklingloads
incolumns,270–274
inplates,293–296
flexibilitymethod,141–147
influenceorflexibilitycoefficient,151
principleofsuperposition,151
principleofthestationaryvalueofthetotalcomplementary
energy,113–114
applicationtodeflectionproblems,114–122
applicationtothesolutionofstaticallyindeterminate
systems,122–138
fictitiousordummyloadmethod,116
unitloadmethod,138–141
principleofthestationaryvalueofthetotalpotential
energy,148–151
reciprocaltheorem,151–155
self-strainingtrusses,145–147
strainenergyandcomplementaryenergy,111–113
temperatureeffects,156–158
totalpotentialenergy,147–148
Eulerbuckling,253,seeColumns
Experimentaldeterminationofcriticalloadforathin
plate,298
Experimentalmeasurementofsurfacestrains,
37–41
straingaugerosette,37F
Fabricationofstructuralcomponents,seeStructural
componentsofaircraft
Factors,ofsafetyflightenvelope,seeAirworthiness
Fail-safestructure,seeFatigue
Failurestressinplatesandstiffenedpanels,seePlates
Fatigue,347–348,403–420
corrosionfatigue,403
crackpropagation,414–419
cracktipplasticity,417
fracturetoughness,417
modesofcrackgrowth,415
rates,418–419
stressconcentrationfactor,414–417
stressfieldinvicinityofacrack,415
stressintensityfactor,414
cyclefatigue,403
designingagainstfatigue,404–405
fatigueloadspectrum,404
gustexceedance,405
gustfrequencycurves,405
endurancelimit,347
Miner’scumulativedamagetheory,348,407
S-ncurves,347,376,377,406
fatiguestrength,347
ofcomponents,405–409
confidencelimits,406
Goodmandiagram,407
scatterfactor,409
frettingfatigue,403
predictionofaircraftfatiguelife,409–414
ground-air-groundcycle,414
gustdamage,411,413
safelifeandfail-safestructures,403–404
stressconcentrations,347,404
thermalfatigue,403
Fictitiousordummyloadmethod,116
Finiteelementmethod,seeMatrixmethods
Flexibilitymethod,141–147
flexibility(influence)coefficient,151
Flexuralrigidityofabeam,119
Flexural-torsionalbucklingofthin-walledcolumns,
286