Quiz 1 solution

Quiz 1 solution - QUIZ#1 Solution A simple pin-connected truss is loaded and supported as shown in Fig P1.11 All members of the truss are aluminum

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QUIZ #1 – Solution A simple pin-connected truss is loaded and supported as shown in Fig. P1.11. All members of the truss are aluminum pipes that have an outside diameter of 4.00 in. and a wall thickness of 0.4 in. Determine the normal stress in member AB. Fig. P1.11 Solution Overall equilibrium: Begin the solution by determining the external reaction forces acting on the truss at supports A and B . Write equilibrium equations that include all external forces. Note that only the external forces (i.e., loads and reaction forces) are considered at this time. The internal forces acting in the truss members will be considered after the external reactions have been computed. The free-body diagram (FBD) of the entire truss is shown. The following equilibrium equations can be written for this structure: 2 kips 2 ki 0 ps x x x F A A Σ = + = = − (6 ft) (5 kips)(14 ft) (2 kips)(7 ft) 14 kips 0 y A y B B M Σ = = = 5 kips 0 9 kips y y y y F A B A = − Σ = + =
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This note was uploaded on 02/08/2011 for the course ME 650:291 taught by Professor Weng during the Fall '11 term at Rutgers.

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Quiz 1 solution - QUIZ#1 Solution A simple pin-connected truss is loaded and supported as shown in Fig P1.11 All members of the truss are aluminum

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