Page 605 - Aircraft Stuctures for Engineering Student

586 Index

Materials of aircraft construction 21 1-20 Open section beams
aluminium alloys 214-16 general systems of loading, see Structural
composite materials 2 18-20 constraint
glass 218 shear centre 298-300
history 211-14 stress, strain and displacement
plastics 217, 218 relationships 291-5
steel 216,217 subjected to bending 276-91
titanium 217 subjected to constraint, see Structural
Matrix methods 494-532 constraint
analysis of pin-jointed frameworks 500-7 subjected to distributed torque loading
analysis of space frames 507-9 478,479
application to statically indeterminate subjected to shear, see Shear of open
frameworks 507 section beams
finite element method 516-32 subjected to torsion, see Torsion of open
displacement functions section beams
beam element 5 18 Oscillations of mass/spring and mass/beam
triangular element 522 systems, see Structural vibration
quadrilateral element 529
stiffness matrix for a beam element Plane strain 20, 21
517-21 Plane stress 8, 9
stiffness matrix for a quadrilateral Plastics, see Materials of aircraft
element 528-30 construction
stiffness matrix for a triangular element Plates, thin
521-8 anticlastic bending 125
tetrahedron and rectangular prism anticlastic surface 125
elements 532 bending and twisting 125-9
flexibility method 494 bending of plates having a small initial
notation 495,496 curvature 141
stiffness influence coefficient 496 boundary conditions 132-4
stiffness matrix 496 buckling 169-78
stifkess matrix for a uniform beam 509-16 buckling coefficients 171-3
stiffness matrix for an elastic spring 496, combined bending and in-plane loading
497 137-41
for two elastic springs in line 497-500 composite, see Stress analysis of aircraft
stiffness method 494 components
Maxwell, J.C. 103 energy method (Rayleigh-Rib) 142-9
Membrane analogy 61-3 experimental determination of buckling
Miner and Palmgren’s linear cumulative load 174
damage law, see Fatigue failure stress in plates and stiffened panels
Model analysis of a fixed beam 106, 107 177-80
Modulus of elasticity 24 flexural rigidity 124
Modulus of rigidity, shear modulus 25 Fourier series 135
Modulus of volume expansion, bulk inelastic buckling 173
modulus 26 instability of stiffened panels 175-7
Mohr’s circle of strain 23, 28 interrivet buckling 177
Mohr’s circle of stress 12-16 Kirchhoff, G.R. 133
Moment couple (bimoment) 482 maximum values of stress 137
Monocoque structures 223 neutral plane 122
plasticity correction factor 173
Neuber beams 316 potential energy of transverse load 144
Neutral axis 281 of in-plane loads 144-6