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This lecture note is mainly quoted from the text books of Statics by Meriam & Karige and Statics by Beer & Johnston Instructor: Dr. Ahmet TUKEN Office: 2A 90 E-mail: [email protected]

CH2-Force Systems-Part a (20 Slides)

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Page 1: CH2-Force Systems-Part a (20 Slides)

This lecture note is mainly quoted from the text books of Statics by Meriam & Karige and Statics by Beer & Johnston

Instructor:

Dr. Ahmet TUKEN

Office: 2A 90

E-mail: [email protected]

Page 2: CH2-Force Systems-Part a (20 Slides)

CHAPTER 2 – FORCE SYSTEMS (INTRODUCTION)

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CHAPTER 2 – FORCE SYSTEMS (FORCE & RESULTANT OF TWO FORCES)

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CHAPTER 2 – FORCE SYSTEMS (RECTANGULAR COMPONENTS)

Page 5: CH2-Force Systems-Part a (20 Slides)

• Forces acting on rigid bodies are divided into two groups:

- External forces (i.e. applied forces, reactions & weight)

- Internal forces (tension, compression, shear, bending & torsional moments)

• External forces are shown in a free-body diagram.

CHAPTER 2 – FORCE SYSTEMS (EXTERNAL AND INTERNAL FORCES)

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CHAPTER 2 – FORCE SYSTEMS (PRINCIPLE OF TRANSMISSIBILITY - 1)

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CHAPTER 2 – FORCE SYSTEMS (PRINCIPLE OF TRANSMISSIBILITY - 2)

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CHAPTER 2 – FORCE SYSTEMS (FORCE CLASSIFICATION)

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Collinear : If several forces lie along the same line of action, they are said to be collinear.

Coplanar : When all forces acting on a body are in the same plane, the forces are coplanar.

Concurrent : A concurrent force system contains forces whose lines of action meet at a common point.

CHAPTER 2 – FORCE SYSTEMS (Collinear, Coplanar & Concurrent Forces)

Page 10: CH2-Force Systems-Part a (20 Slides)

ENGINEERING MECHANICS : STATICS CHAPTER 2 – FORCE SYSTEMS

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CHAPTER 2 – FORCE SYSTEMS

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CHAPTER 2 – FORCE SYSTEMS

Page 13: CH2-Force Systems-Part a (20 Slides)

P + Q + S = (P + Q) + S = P + (Q + S) This is the Associative Law of Vector Addition

Polygon Rule: can be used for the addition of more than two vectors. Two vectors are actually summed and added to the third and so on...

CHAPTER 2 – FORCE SYSTEMS (VECTOR ADDITION - POLYGON RULE)

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CHAPTER 2 – FORCE SYSTEMS

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CHAPTER 2 – FORCE SYSTEMS

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CHAPTER 2 – FORCE SYSTEMS (RESULTANT OF VECTORS)

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EXAMPLE - 1 CHAPTER 2 – FORCE SYSTEMS

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EXAMPLE – 1 (CONTINUED) CHAPTER 2 – FORCE SYSTEMS

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EXAMPLE - 2 CHAPTER 2 – FORCE SYSTEMS

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EXAMPLE – 2 (CONTINUED) CHAPTER 2 – FORCE SYSTEMS