Lecture 12

# Lecture 12 - Lecture 12 FRAMES AND MACHINES Section 6.6...

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Statics: Lecture Notes for Sections 6.6 1 Lecture 12 FRAMES AND MACHINES Section 6.6 Ehab Zalok Objectives : Students will be able to: a) Draw the free body diagram of a frame or machine dit b and its members. b) Determine the forces acting at the joints and supports of a frame or machine. 2

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Statics: Lecture Notes for Sections 6.6 2 APPLICATIONS Frames are commonly used to support various external loads. How is a frame different than a truss? How can you determine the forces at the joints and supports 3 of a frame? APPLICATIONS (continued) Machines, like these above, are used in a variety of li ti 4 applications. How can you determine the loads at the joints and supports? These forces and moments are required when designing the machine members.
Statics: Lecture Notes for Sections 6.6 3 FRAMES AND MACHINES: DEFINITIONS Frames and machines are two common types of structures that have at least one multi-force member . 5 (Recall that trusses have nothing but two-force members). Frames are generally stationary and support external loads. Machine s contain moving parts and are designed to alter the effect of forces. READING QUIZ 1. Frames and machines are different as compared to trusses since they have ___________. A) only two-force members B) only multiforce members C) at least one multiforce member D) at least one two-force member 6

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Statics: Lecture Notes for Sections 6.6 4 STEPS FOR ANALYZING A FRAME OR MACHINE 1. Draw the
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Lecture 12 - Lecture 12 FRAMES AND MACHINES Section 6.6...

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