ADVANCED MECHANICS OF COMPOSITE MATERIALS Episode 3 ppt

... or stretching 10 30 -mm-long Fig. 3. 30. Specimens of matrix material. Fig. 3. 31. Testing of the matrix specimen. 86 Advanced mechanics of composite materials 3. 3. Micromechanics of a ply Consider ... Advanced mechanics of composite materials Table 3. 2 Strength of bundles consisting of fibers of different strengths. Fiber number Bundle number 1 234 5 10.6...

Ngày tải lên: 13/08/2014, 08:20

... Fraction 127 3. 7. Phenomenological Homogeneous Model of a Ply 129 3. 8. References 131 Chapter 4. Mechanics of a Composite Layer 133 4.1. Isotropic Layer 133 4.1.1. Linear Elastic Model 133 4.1.2. ... 101 3. 4.1. Longitudinal Tension 102 3. 4.2. Transverse Tension 106 3. 4 .3. In-Plane Shear 110 3. 4.4. Longitudinal Compression 1 13 3.4.5. Transverse Compression 122 3. 5....

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... i.e., ε m 1 = 1 E m  σ m 1 −ν m σ m 2 −ν m σ m 3  ε m 2 = 1 E m  σ m 2 −ν m σ m 1 −ν m σ m 3  (3. 94) ε m 3 = 1 E m  σ m 3 −ν m σ m 1 −ν m σ m 2  102 Advanced mechanics of composite materials Table 3. 5 Typical properties of unidirectional ... 0 .30 0 .31 0 .30 Carbon–epoxy 1200 0.86 0.27 0.45 0. 23 Aramid–epoxy 30 0 0 .31 0 .34 0.59 0.11 Boron–epoxy 2000 0.95 0...

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... B 41  ε 2 +yθ  2  +B 44 (θ 2 +v  2 ) (4.101) 192 Advanced mechanics of composite materials G 13 = 5.6 GPa, G 23 = 6.4 GPa, ν 13 = 0.095, ν 23 = 0 .35 , σ + 2 = 25.5 MPa. The distributions of stresses normalized to the ... strain ε x = 2 h 2 l c  l c /2 0 dx  h 2 0 ε x2 dz 184 Advanced mechanics of composite materials 1 2 3 x y z h 1 2 3 t yz t xz t xz t...

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... Tarashuch I.V. (1991). Fatigue failure of laminated carbon-fiber-reinforced plastic. Mechanics of Composite Materials, 27(1), 58–62. 420 Advanced mechanics of composite materials 7.4.1. Circumferential ... 0 418 Advanced mechanics of composite materials 0 1 2 3 4 5 6 7 510 152025 30 354045 P, kN P f m f m , m m Fig. 7.49. Force–deflection diagrams for square ara...

Ngày tải lên: 13/08/2014, 08:21

... ε 11 ,ε y = ε 22 ,ε z = ε 33 γ xy = 2ε 12 = 2ε 21 ,γ xz = 2ε 13 = 2ε 31 ,γ yz = 2ε 23 = 2ε 32 Then, Eq. (2 .39 ) can be written as dW =  V dUdV (2.40) 54 Advanced mechanics of composite materials Here δW ε =  V (σ x δε x +σ y δε y +σ z δε z +τ xy δγ xy +τ xz δγ xz +τ yz δγ yz )dV ... form { σ } = [ S ] { ε } (2.46) where { σ } = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ σ x σ y...

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... (2. 53) , yield ε 1 = σ 1 E 1 −ν 12 σ 2 E 2 −ν 13 σ 3 E 3 ε 2 = σ 2 E 2 −ν 21 σ 1 E 1 −ν 23 σ 3 E 3 ε 3 = σ 3 E 3 −ν 31 σ 1 E 1 −ν 32 σ 2 E 2 γ 12 = τ 12 G 12 ,γ 13 = τ 13 G 13 ,γ 23 = τ 23 G 23 (4. 53) ... G 12 γ 12 ,τ 13 = G 13 γ 13 ,τ 23 = G 23 γ 23 (4.54) where A 1 = E 1 D (1 −ν 23 ν 32 ), A 2 = E 2 D (1 −ν 13 ν 31 ), A 3 = E 3 D...

Ngày tải lên: 13/08/2014, 08:20

... Advanced mechanics of composite materials 0 0. 03 3.6 0.19 0.58 0.68 0.81 0.95 0. 03 0.014 0.05 0.1 0.175 0 .3 0.49 0.74 0.92 0.99 0.06 0.1 0.16 0.26 0.4 0.59 0.79 0. 034 0.94 0.995 0 0.1 0.2 0 .3 0.4 0.5 0.6 0.7 0.8 0.9 1 01 234 5678910 F l c 1.8 3. 15 0.68 ... 54.06 GPa, A 12 = 2 GPa, A 22 = 93. 4 GPa E x = 54 GPa, E y = 93. 3 GPa, ν xy = 0. 037 ,ν yx = 0.021 212 Advanced...

Ngày tải lên: 13/08/2014, 08:20

... A 1 l 3 x1 l y1 +A 2 l 3 x2 l y2 +A 3 l 3 x3 l y3 +A 112 (l x1 l y2 +l x2 l y1 )l x1 l 2 x +A 1 13 (l x1 l y3 +l x3 l y1 )l x1 l x3 +A 2 23 (l x2 l y3 +l x3 l y2 )l x2 l x3 (1, 2, 3) S 11 13 = A 1 l 3 x3 l z1 +A 2 l 3 x2 l z2 +A 3 l 3 x3 l z3 +A 112 (l x1 l z2 +l x2 l z1 )l x1 l x2 +A 1 13 (l x1 l z2 +l x3 l z1 )l x1 l x3 +A 2 23 (l x2 l z3 +l x3 l z2 )l x2 l x3 (1, ......

Ngày tải lên: 13/08/2014, 08:21

... Boron–epoxy Boron–Al Modulus, E (GPa) 27.054. 834 .880 .3 1 83. 1 Poisson’s ratio, ν 0 .34 0 .31 0 .33 0 .33 0.28 Specific modulus, k E ×10 3 (m) 1290 35 30 2640 38 20 6910 5.8. Antisymmetric laminates In antisymmetric ... the FE modeling of the shells with allowance for their mosaic structure. The finite-element 30 0 Advanced mechanics of composite materials Chapter 5. Me...

Ngày tải lên: 13/08/2014, 08:21