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Consider a laminate [±45] of the following material:

E1= 137.8 GPa

E2 = 10 GPa

G12 = 5.236 GPa

v12 = 0.3

F1t = 826.8 MPa

F1c = 482.3 MPa

F2t = F2c= 68.9 MPa

F6 = 241.15 MPA

and thickness tk = 0.127 mm, subject to Nx = N= = 1.0 N/mm. Determine the strength ratio R at the bottom surface of the laminate, using the following strength criteria:

(a) Maximum stress,

(b) Maximum strain,

(c) Interacting failure criterion. Do not adjust for in-situ strength. You are allowed to use a computer program to find the stresses but you must present detailed computations of the R values.

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  • Reference No.:- M92171434

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