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Unformatted text preview: it is then in compression. Summary 1. Draw the freebody diagram of the entire structure and determine the reaction forces; 2. Start from an joint with only or less than two unknowns; 3. Draw freebody diagram of the joint and solve two equilibrium equations; 4. Repeat this procedure until forces in all members have been solved. 5. When the reaction of an internal force is (assumed) towards an joint, the internal force is (assumed) in compression; whereas the reaction of an internal force is (assumed) away from the joint, it is (assumed) in tension. Lecture 7 Method of Section and System Constraints Objectives: Static Analysis of Truss Structures Solution Insert an imaginary plane nn to cut the structure into two parts, and analyze the left part: The system is completely constrained, and determinate, though the square GHIJ is not rigid....
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 Spring '08
 PAPADOPOULOS
 Statics, Truss, Truss bridge, Internal Force, Warren Truss Structures, Howe Truss Structures

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