Aircraft structures for engineering students - part 6 potx

... +66 0 64 0 278 x lo6 35 .6 2 +60 0 60 0 2 16 x IO6 32.3 3 +420 60 0 1 06 x IO6 22 .6 4 +228 60 0 31 x lo6 12.3 5 + 25 62 0 0.4 x lo6 1.3 6 -2 04 64 0 27 x 1 06 -1 1.0 7 -3 96 640 ... 2.0 x 60 0 ( ;;l) B1 = 300 + 3.0x400(2-l)+ 6 6 2 +- which gives Also B1(= B6) = 1050mm2 i.e. 1.5 x 60 0 ( KM)) 2 +- 2.0 x 60 0 (...

Ngày tải lên: 08/08/2014, 11:21

... (Eqn (6. 17)): which gives the differential equation Equation (6. 66) may now be integrated. Thus or From Eqn (6. 65) (6. 65) (6. 66) (6. 67) Compressible flow 339 i.e. when Mk(y - l)u'/U, ... 2+ ( 7- 1)M; For air 6. 4.5 Temperature rise across the normal shock Directly from the equation of state and Eqns (6. 43) and (6. 45): For air (6. 45) (6...

Ngày tải lên: 08/08/2014, 11:21

... load for a flat plate 51 51 59 61 63 65 65 68 68 70 71 73 76 77 85 100 103 103 107 109 110 110 122 122 125 129 137 141 142 149 149 152 152 1 56 160 162 165 169 ... = - [a, + a,, + az - 2v(ax + ay + 41 or In the case of a uniform hydrostatic pressure, a, = a,, = az = -p and 3(1 - 2~) E P e =- (1.49) The...

Ngày tải lên: 08/08/2014, 11:21

... satisfied. PX ax = - [5y(x2 - z2) - ioy3 + 6dZy] 20d3 ay = E( - 3yd2 - 2d3) 4d3 -P 40d3 Txy = - [5(3x2 - Z2)(y2 - d2) - 5y4 + 6y2d2 - $1 The boundary stress ... M=-Pz Rz, hence -= 4 2 dR 2z between F and B P d3 dM d3 4 2 dR 2 M = - (L - z) - -Rz, hence - = - -2 and between...

Ngày tải lên: 08/08/2014, 11:21

... q(x,y)sin-sin- dxdy . mrx m'rx nry n'ry sin - sin - dx dy = m=l 2 n=l T/:jIamsin-sin- a a b b - ab 4 - since a 2 _- - when m=m' and . nry . n'ry sin-sin- ... and My are known. If either M, or My is zero then d2W - a2W d2W - d2W ax2 - 8Y2 ay2 - dX2 - -v- or - -v- and the plate has...

Ngày tải lên: 08/08/2014, 11:21

... u EI, 7 = - PV EI,,,, = -Pu d48 P d28 d24 ( A)G= El? GJ-Io- (6. 87) (6. 88) (6. 89) Equations (6. 87), (6. 88) and (6. 89), unlike Eqs (6. 74), (6. 75) and (6. 83), are uncoupled ... oldest member 6. 1 2 Flexural-torsional buckling of thin-walled columns 185 0 P - ~EIJL~ -Pxs P - ~EI,,JL~ 0 PYS PYS - Pxs IOPIA - .rr2ET/L2...

Ngày tải lên: 08/08/2014, 11:21

... g)2 ( Su,e 7 SA :-) ’ ( -3 .23 x 5. 26 x 105u;5. 6 Sqrn 10001~0 Substituting for and Skqm we have or D, = 16. 99 x lo2 ( - :)2 Jm (u;: 2u;5. 26 + u ;6. 26) due 2/10 ur ... for vertical equilibrium L+P- w=o (8.7) for horizontal equilibrium T-D=O and taking moments about the aircraft s centre of gravity in the plane of symmetry La -...

Ngày tải lên: 08/08/2014, 11:21

... 60 0 N/mm2 then, from Eq. (10.27) x 1.22 = 3 .66 mm 3 x 2 760 0 27 60 0 t;, = Hence 1270 3 .66 67 , = - - - 347 Also 61 2 = 65 6 = 840, 62 3 = 783, 63 4 = 1083, 63 , = 57, 68 4 ... and -1 90 x lo6 5.22 x lo8 Yr = -0 . 364 ~~ 0z:r = Hence Pi = P3 = -P4 = -P6 = -0 . 364 X 295 X 900 = -9 66 42N and P2 -Ps =...

Ngày tải lên: 08/08/2014, 11:21

... substitute in Eq. (1 1.28) for q from Eq. (1 1.25) and for PB from Eq. (1 1. 26) . Hence 1 #PA - Gt ( PA S,Z PA) - - - - - - - - - - - 2 dz2 dE 2B 2Bh A Rearranging, ... B3 = B6 = B7 = 60 0mm2 AFZS. ~1 = -1 90.7N/m2, 02 = -1 81.7N/mm2, 63 = -1 72.8N/mm2, U4 = -1 63 .8 N/lIUll2, 65 =...

Ngày tải lên: 08/08/2014, 11:21

... matrix for a uniform beam 51 1 It is possible to write Eq. (12.44) in an alternative form such that the elements of [KJ are pure numbers. Thus 12 -6 -1 2 -6 -6 4 62 -1 2 6 12 6 -6 2 64 This form ... vj o 121~~ -6 1~~ o -1 21~~ -6 1~~ o -1 21~~ 61 ~~ o 121~~ 61 ~~ 00 000 0 0 -6 /L2 4/L 0 6/ L2 2/L 00 000 0 0 -6 /L2 2/L 0 6/ L...

Ngày tải lên: 08/08/2014, 11:21