Lecture+11 - 440:221 Intro to Engineering Mechanics:...

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440:221 Intro to Engineering Mechanics: Statics 1 Fall 2011 Based on Textbook Material: Engineering Mechanics Statics, 12 th Edition, R.C. Hibbeler, Pearson 2010. Alberto Cuitino, Po Ting Lin Instructors Arturo Villegas Assistants
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440:221 Lectures School of Engineering, Fall 2011 Topics to be covered • Is possible to reduce (simplify) a force/couple system? • Is there any advantages in doing so? • What is the procedure? • What is an equivalent system? • When do we use equivalent systems? 2
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440:221 Lectures School of Engineering, Fall 2011 1. A general system of forces and couple moments acting on a rigid body can be reduced to a ___ . A) single force B) single moment C) single force and two moments D) single force and a single moment 2. The original force and couple system and an equivalent force-couple system have the same _____ effect on a body. A) internal B) external C) internal and external D) microscopic Preliminary Questions D) single force and single moment D) single force and single moment B) external B) external
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440:221 Lectures School of Engineering, Fall 2011 What are the resultant effects on the person’s hand when the load is applied in these two different ways? Why is understanding the difference important when designing various load-bearing structures? Equivalent Systems
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440:221 Lectures School of Engineering, Fall 2011 Several forces and a couple moment are acting on this vertical section of an I-beam. For the process of designing the I-beam, it would be very helpful if you could replace the various forces and moments as just one force and one couple moment at point O with the same external effect? How will you do that? | | ?? Equivalent Systems -- Applications
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440:221 Lectures School of Engineering, Fall 2011 When a number of forces and couple moments are acting on a body, it is easier to understand their overall effect on the body if they are combined into a single force and couple moment having the same external effect. The two force and couple systems
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This note was uploaded on 09/25/2011 for the course ENGINEERIN 221 taught by Professor Cuitino during the Spring '10 term at Rutgers.

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Lecture+11 - 440:221 Intro to Engineering Mechanics:...

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