Given that the face volume fraction of a sandwich structure is 0.06 and its homogenised density is 270 kgm^-3. Use the i

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Given That The Face Volume Fraction Of A Sandwich Structure Is 0 06 And Its Homogenised Density Is 270 Kgm 3 Use The I 1 (141.32 KiB) Viewed 23 times

Given that the face volume fraction of a sandwich structure is 0.06 and its homogenised density is 270 kgm^-3. Use the information given in Table 1 and some (or all) of Equations (1-5) to determine the panel's material index when optimising for a light-weight, strong panel. Ignore 'core failure' as a possible failure mode for your calculations. Give your answer in units of KPa^0.5kg^-1m^3 correct to 1 decimal place. Table 1. Strength of the face and core of the sandwich structure. Parameter Value (Units) Young's Modulus of Face 100 (GPa) Young's Modulus of Core 0.4 (GPa) Yield strength of Face 600 (MPa) Yield Strength of Core 4 (MPa) to Face yield A Face buckling Core failure Figure 1. Three different failure modes of a sandwich panel under flexural loading. Eq (1) Õflex1 = (1 – (1 – f)2)0f + (1 - f)oc Öflex2 = 2.28f(1 – f)(EfE2)1/3 = Eq (2) oc = Eg (3) Blum +8707} B4 Õplex3 43(1-f) +f20 B3 2 M = Vo/P M = E4/3/2 Eq (4) Eq (5)