Problem_11_11

# Problem_11_11 - Problem 11.11 Given A composite aluminum...

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Problem 11.11 Given: A composite aluminum alloy (E = 72 GPa and ν = 0.33) cylinder is made up of an inner cylinder with inner an outer diameters of 80 and 120+ mm, respectively, and an outer cylinder with inner and outer diameters of 120 and 240 mm, respectively. The composite cylinder is subjected to an internal pressure of 160 MPa. What must the outside diameter of the inner cylinder be if the circumferential stress at the inside of the composite cylinder is equal to 130 MPa. Solution: a 80 mm 2 := b 240 mm 2 := c 120 mm 2 := p 1 160 MPa := p 2 0 MPa := P0 := Using Eq. 11.21, evaluate σ θθ for the One Piece Solution (OPS) at at r=a: σ θθ OPS p 1 a 2 p 2 b 2 b 2 a 2 a 2 b 2 a 2 b 2 a 2 () p 1 p 2 + 200 MPa = := The total stress is computed from: σ θθ Total
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