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Compound layers of [0/45/37]s, each 4mm thick, and composed of 65% by volume continuous aramid fibers and 35% polyamine matrix were subjected to Nx=Ny=800N/m loading.
Compound layers of [0/45/37]s, each 4mm thick, and composed of 65% by volume continuous aramid fibers and 35% polyamine matrix were subjected to Nx=Ny=800N/m loading. The engineering constants of aramid fibers are: EF=124GPa,f=0.36,GF=3GPa. Likewise, the engineering constants of the polyamine matrix are: Em =3.5GPa,Gm=1.3GPa,f=0.35. (55 points) a) Calculate the compliance and reduced stiffness values for each layer of this multilayer composite and represent them as [S] and [Q] matrices. b) Calculate the matrices [A],[B] and [D], c) Calculate the midplane deformations and the slope values. d) Calculate the principal and axial stresses in the upper plane of the third layer (layer -37). e) Calculate the contribution of each layer to the Nx and Ny loadings as a percentage (\%)
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