Answers to Selected Problems

Chapter 1 Analysis of Stress

1.1. P = 4.27 kN

1.4. P = 32.5 kN, θ = 26.56°

1.6. Pall = 38.3 kN

1.8. σx = 156 MPa, τx′y′ = –131 MPa

1.10. σx = –13.15 MPa, τx′y′ = –15.67 MPa

1.11. F = 67.32 kN/m3

1.14. Fx = Fy = Fz = 0

1.21.

a. σ = 153.3 MPa,

b. σ = 23.1 MPa

1.26.

a. σ1 = 121 MPa, σ = –71 MPa, τmax = 96 MPa

b. σ1 = 200 MPa, σ2 = –50 MPa, τmax = 125 MPa

Image

1.31.

a. σx = 38.68 MPa, σy = 12.12 MPa, τxy = 7 MPa

b. σ1 = 40.41 MPa, σ2 = 10.39 MPa, Image

1.34. P = 3πpr2

1.37. τmax = 48 MPa, θp = 29°

1.38. σw = 61.5 MPa, τw = 26.3 ...

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