Chapter 4 - 4.1 Equilibrium and Free-Body Diagram System:...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
4.1 Equilibrium and Free-Body Diagram System: An isolated portion of a machine or structure Equilibrium: If the system to be studied is motionless, or has constant velocity, Then the system has zero acceleration. Under this condition, the system is said to Be in equilibrium. = = 0 0 M F Sum of force (moment) acting upon a system is zero
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The system to be studied can be complicated: Multiple components Solution: To free or isolate a portion or a segment of the system. The original effect on the segment must be represented: Using interacting forces Or moments. The isolated subsystem with all the forces and moments due to external effects and Reactions with the main system is called a free body diagram.
Background image of page 2
Example 4-1: Gear Reducer Input and output shafts AB and CD Are rotating at constant speed ω i , ω o. Input torque T i = 240lbf.in and T 0 . Shafts are supported by bearings at A,B,C,D. The Pitch radii of gears G 1 And G 2 are r 1 =0.75 in and r 2 =1.5 in. Draw the FBD of each member and
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 19

Chapter 4 - 4.1 Equilibrium and Free-Body Diagram System:...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online