Lecture 20 - ENGR-1100 Introduction to Engineering Analysis...

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ENGR-1100 Introduction to Engineering Analysis Lecture 20 Notes courtesy of: Prof. Yoav Peles
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Homework Assignment (due next class) Problem 7-86 Problem 7-98 Problem 7-99
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Today Lecture outline Frames
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Two important structures types Trusses: Structures composed entirely of two force members. Frames: Structures containing at least one member acted on by forces at three or more points.
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Trusses assumptions 1) Truss members are connected together at their ends only. 2) Truss members are connected together by frictionless pins. 3) The truss structure is loaded only at the joints. 4) The weight of the member may be neglected.
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Frames vs. Machines Frames -Rigid structure. -Overall equilibrium is sufficient to determine support reaction. Machines -Not a rigid structure. -Overall equilibrium is not sufficient to determine support reaction. additional support reaction is needed for equilibrium
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Members of a frame are not necessarily two force members. The direction of the force applied by the
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Lecture 20 - ENGR-1100 Introduction to Engineering Analysis...

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