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Homework7

Homework7 - layer is 0.25mm Compute stress matrix{σ x...

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Fall 2010 - Introduction to Composite Materials – 3 credits Cross-Listed Course: MAE 4550, CEE 4770, MSE 5550, TAM 4550/5550 HW 7. Failure Criteria and Design Date Due: November 2, 2010 Consider a tube made of [±45/0 3 ] s carbon fiber composite. The tube is subjected to an axial force P (tension) and a positive Torque T (the vector T at the left end is along the positive axis x, which is the axis of the tube. The mean radius of the tube is 30mm and the thickness of each
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Unformatted text preview: layer is 0.25mm. Compute stress matrix {σ} x and {σ} 1 for the following cases: (i) T=1 kN.m (ii) P=1 kN (iii) T=1 kN.m and P=1 kN (just do superposition) For each case clearly draw the distribution of {σ} x and {σ} 1 in each layer or group of layers. Note that {σ} x is in global coordinate system and {σ} 1 is in local (or material) coordinate system Use material properties given below: E1 = 125 Gpa E2 = 10 GPa v12 = 0.25 G12 = 5 GPa...
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