Given a 3-ply [0/60]s unidirectional aramid/epoxy laminate with a volume fraction of 60%subjected to loads Nx = 100 N/m and Mx = 50 N m/m. Assume each ply has a thickness of 5mm. Use the values calculated from HW #6 to determine the following:a. The three stiffness matrices [A], [B], and [D]b. The midplane strains and curvaturesc. The global and local stresses and strains on the top surface of the 60° ply.d. The in-plane and flexural stiffnesses of the laminatee. Apply Tsai-Hill Failure Criterion for the top surface of the 60° ply.f. Apply the Maximum Strain Failure Criterion for the top surface of the 60° ply.

The key steps in the analysis are:Calculating the laminate stiffness matrices [A], [B], and [D]…

Answered: Given a 3-ply [0/60]s unidirectional…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A continuous and aligned fiber-reinforced composite is to be produced consisting of 30 vol% aramid fibers and 70 vol% of a polycarbonate matrix; mechanical characteristics of these two materials are as follows: Modulus of Elasticity [GPa (psi)] Tensile Strength [MPa (psi)] 131 (19 × 10º) 3600 (520,000) Aramid fiber Polycarbonate 2.4 (3.5 × 105) 65 (9425) Also, the stress on the polycarbonate matrix when the aramid fibers fail is 45 MPa (6500 psi). For this composite, compute the following: (a) the longitudinal tensile strength, and (b) the longitudinal modulus of elasticity
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To support a tensile load of 65 kN, a metallic rod with a circular cross section and a length of 0.32 m will be used. It is desirable that the tension in the bar should not exceed 240 MPa and the maximum elongation should be 0.42 mm. What is the minimum rod diameter [m] in these conditions? Calculate. (For a metallic bar, take the elastic modulus as 220 GPa).
a →y Determine the location of the centroid of the cross-section (y,z' distances)! Determine the inertia-moments of the cross-section, with respect to the centroidal axes (I, L)! a = 114.00 [mm] b = 342.00 [mm] c = 228.00 [mm] Results: a
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