Rasmus ÿstergaard forside 100%.indd - Solid Mechanics

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utip,∗ n J = JR, J W ′ E 2a, a
∗ a/(unE ′ /ˆσ) ¯σ/ˆσ =1. ∗ a/(unE ′ /ˆσ) → 0 ¯σ/ˆσ → 1 ˆσ. ∗ a/(unE ′ /ˆσ) > 2 = 0.004m ˆσ = 1MPa u ∗ n ′ E = 40GP a. a>320m. E = 120MPa. ˆσ = σuts =3MPa u∗ n = GIc/ˆσ = 300J/m2 /3MPa =0.0001m a 1cm. © P. a0/H =7.5. ˆσn/E =1.92·10−5 . ∗ un /H =0.122.
Page 1: Technical University of Denmark Dep
Page 4 and 5: £ ¥ § © ¥ § £ § ¥
Page 6 and 7: £ ¥ § © ¥ § £ § ¥
Page 8 and 9: ¢ ¢ ¥ § ©
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
Page 18 and 19: sij = ⎡ ⎢ ⎣ ν21 ν31 − −
Page 20 and 21: ρ ρ
Page 22 and 23: σn
Page 26 and 27: σn ˆσ ˙λ
Page 28 and 29: σ I n = un u∗ σ(λmax) n λmax
Page 30 and 31: ˙δi
Page 32 and 33: • •
Page 34 and 35: M ∗ = Phχ+ M χ
Page 36 and 37: z1 z2 M = 0 M =0. ψ
Page 38 and 39: ω
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
Page 48 and 49: 2
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
Page 58 and 59: ˆσ
Page 60 and 61: JR σn σt U ∗ n JR
Page 62 and 63: E
Page 64 and 65: σn(Un/H)ℓ EfH = Pn EfH σt(Ut
Page 66 and 67: (Ut ≡ 0)
Page 68 and 69: Γ/HEf.
Page 70 and 71: α
Page 72 and 73: ϕ = −30 ◦ ◦ −60 , ϕ = −
Page 74 and 75:
β0,
Page 76 and 77:
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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£
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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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