Lecture 14 - ME 221 Statics Lecture#14 Sections 7.1 7.4...

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ME221 Lecture 14 1 ME 221 Statics Lecture #14 Sections 7.1 – 7.4
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ME221 Lecture 14 2 Homework #6 Chapter 7 problems: 6, 19 & 26 Chapter 6 problems 3 & 6 Due Monday, June 28 MatLab Group Problems 7.19, 7.26 & 6.15 Due Monday, June 28
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ME221 Lecture 14 3 Quiz #6 Friday, June 25
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ME221 Lecture 14 4 Chapter 7: Internal Forces in Structures Review internal/external forces How to find internal forces Sample problems
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ME221 Lecture 14 5 External/Internal Forces External forces arise from contact or gravitational attraction Point and distributed loading Weight Internal forces are forces arising to hold bodies together Internal stress is a form of an internal force
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ME221 Lecture 14 6 Exposing Internal Forces To analyze the stress at a given location in a part, we need to know the forces at that particular section. 100 lb a a b b c c At any given section a-a, b-b, or c-c, there is an internal force arising from the 100 lb external force.
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ME221 Lecture 14 7 Method for Finding Internal Forces
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Lecture 14 - ME 221 Statics Lecture#14 Sections 7.1 7.4...

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