Lecture_Notes_for_Sections_6.1_6.3

Lecture_Notes_for_Sections_6.1_6.3 - Todays Objectives:...

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SIMPLE TRUSSES, THE METHOD OF JOINTS, & ZERO-FORCE MEMBERS Today’s Objectives : Students will be able to: a) Define a simple truss. b) Determine the forces in members of a simple truss. c) Identify zero-force members. In-Class Activities : Check Homework, if any Reading Quiz Applications Simple Trusses Method of Joints Zero-Force Members Concept Quiz Group Problem Solving Attention Quiz
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READING QUIZ 1. One of the assumptions used when analyzing a simple truss is that the members are joined together by __________. 1) welding 2) bolting 3) riveting 4) smooth pins 5) super glue 2. In the method of joints, typically _________ equations of equilibrium are applied at every joint. A) two B) three C) four D) six
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APPLICATIONS Trusses are commonly used to support a roof. For a given truss geometry and load, how can we determine the forces in the truss members and select their sizes? A more challenging question is that for a given load, how can we design the trusses’ geometry to minimize cost?
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APPLICATIONS (continued) Trusses are also used in a variety of structures like cranes and the frames of aircraft or space stations. How can we design a light weight structure that will meet load, safety, and cost specifications?
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SIMPLE TRUSSES (Section 6.1) A truss is a structure composed of slender members joined together at their end points. If a truss, along with the imposed load, lies in a single plane (as shown at the top right), then it is called a planar truss .
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Lecture_Notes_for_Sections_6.1_6.3 - Todays Objectives:...

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