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Example problem 1-1

A flat steel bar has axial load applied at points A,B,C and D as shown in fig if the bar has a cross-sectional area of 3 in 2 determine the axial stress in the bar. (a) on a cross section 20 in . To the right of point A . (b) on a cross section 20 in.to the right of point B.

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Example problem 1-1

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  1. A flat steel bar has axial load applied at points A,B,C and D as shown in fig if the bar has a cross-sectional area of 3 in2 determine the axial stress in the bar. (a) on a cross section 20 in . To the right of point A . (b) on a cross section 20 in.to the right of point B. (c) on a cross section 20 in .the right of point C. Example problem 1-1

  2. 30” 45” 40” 81kip 54kip 18kip 45kip C D A B

  3. The round bar shown if fig has stell,brass,and aluminum sections. axial loads are applied at cross sections A,B,C and D. if the allowable axial normal stresses are 125 Mpa in the steel,70Mpa in the brass,85Mpa in the aluminum, determine the diameters required for each of the sections. EXAMPLE PROBLEM 1-2

  4. C Aluminum D B Brass 225KN A steel 200KN 245KN 270KN 0.5m 0.5m 0.5m

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