Rasmus ÿstergaard forside 100%.indd - Solid Mechanics

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sij = ⎡ ⎢ ⎣ ν21 ν31 − − 0 0 0 E22 E33 1 ν32 − 0 0 0 E22 E33 ν23 1 − 0 0 0 E22 E33 1 0 0 0 0 0 G23 1 0 0 0 0 0 G31 1 0 0 0 0 0 1 E11 − ν12 E11 − ν13 E11 sij = 1 E ⎡ ⎢ ⎣ σ12 G12 ⎤ ⎥ ⎦ 1 −ν −ν 0 0 0 −ν 1 −ν 0 0 0 −ν −ν 1 0 0 0 0 0 0 2(1+ν) 0 0 0 0 0 0 2(1+ν) 0 0 0 0 0 0 2(1+ν) σ22 H22 σ22 + iσ12 = H11 1 √ Kr 2π iɛ−1/2 , ⎤ ⎥ ⎦ ɛ β β = [(s′ 11s ′ 22) 1/2 + s ′ 12]#2 − [(s ′ 11s ′ 22) 1/2 + s ′ 12]#1 √ , H11H22 #1 #2 #1 #2 H11 = 2m H11 H22 λ 1/4 (s ′ 11s′ 22 )1/2 + 2m #1 λ 1/4 (s ′ 11s′ 22 )1/2 #2 m = H22 = (1+ρ) 2 , 2m λ −1/4 (s ′ 11s′ 22 )1/2 + 2m #1 λ −1/4 (s ′ 11s′ 22 )1/2 , #2
λ = s′ 11 s ′ 22 ρ = 2s′ 12 + s ′ 66 2 s ′ 11s ′ , 22 ρ s66 G12 K H11 Δu2 + iΔu1 = H22 2H11Kriɛ+1/2 (2π) 1/2 (1 + 2iɛ)cosh(πɛ) , G = H11 4cosh 2 (πɛ) |K|2 . ρ, ˆ λ Σ, β , Σ= (s′ (s ′ 11 )#2 11) ρ ρ #1 ,
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Page 10 and 11: Sandwich columns Composite Structur
Page 12 and 13: γ
Page 14 and 15: μi, Ei νi (i =1, 2)
Page 16 and 17: K K = σCL iɛ+1
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Page 26 and 27: σn ˆσ ˙λ
Page 28 and 29: σ I n = un u∗ σ(λmax) n λmax
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Page 34 and 35: M ∗ = Phχ+ M χ
Page 36 and 37: z1 z2 M = 0 M =0. ψ
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Page 40 and 41: σ12H/P =0.1, 0.05, 0.01
Page 42 and 43: B, G = (s′ 11 )#2 2B2 2 2 P M +
Page 44 and 45: P ΔPFB Initiation ψ = −45 ◦
Page 46 and 47: Jc [J/m 2 ] Jc [J/m 2 ] 1000 800 60
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Page 50 and 51: Outward buckling of initially debon
Page 52 and 53: Pcr P gl 1 0.8 0.6 0.4 0.2 0.01 0.0
Page 54 and 55: 0.6 0.5 0.4 0.3 0.2 0.1 initial cra
Page 56 and 57: P P gl P P gl 1 0.8 0.6 0.4 0.2 1 5
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Page 60 and 61: JR σn σt U ∗ n JR
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Page 64 and 65: σn(Un/H)ℓ EfH = Pn EfH σt(Ut
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Γ/HEf.
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α
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ϕ = −30 ◦ ◦ −60 , ϕ = −
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β0,
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β0,
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ˆσi < ˆσcore ˆσi ˆσcore
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© ©
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£
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£
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Int J Fract (2007) 143:301-316 DOI
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Interface crack in sandwich specime
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[P2] Journal of Sandwich Structures
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446 R. C. ØSTERGAARD ET AL. widesp
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448 R. C. ØSTERGAARD ET AL. core a
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450 R. C. ØSTERGAARD ET AL. The mo
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452 R. C. ØSTERGAARD ET AL. Energy
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454 R. C. ØSTERGAARD ET AL. (a) (b
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462 R. C. ØSTERGAARD ET AL. proces
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464 R. C. ØSTERGAARD ET AL. APPEND
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466 R. C. ØSTERGAARD ET AL. 7. Zen
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Abstract Buckling driven debonding
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1266 R.C. Østergaard / Internation
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Rasmus ÿstergaard forside 100%.indd - Solid Mechanics

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