Lecture 24 - ENGR-1100 Introduction to Engineering Analysis...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
ENGR-1100 Introduction to Engineering Analysis Lecture 24 Notes courtesy of: Prof. Yoav Peles
Background image of page 1

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

View Full Document Right Arrow Icon
Homework Assignment (due next class) Problem 9-8 Problem 9-16 Problem 9-26
Background image of page 2
Today Lecture outline Dry friction (Coulomb friction)
Background image of page 3

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

View Full Document Right Arrow Icon
Friction Friction forces oppose the tendency of contacting surfaces to slip one relative to the other. Dry friction- the tangential component of the contact force. Fluid friction-
Background image of page 4
Friction Forces have to be concurrent in order to be in equilibrium.
Background image of page 5

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

View Full Document Right Arrow Icon
Friction forces as a function of P Maximum value of friction forces is called the limiting value of static friction . This condition is also called the impending motion
Background image of page 6
Tip vs. slip Body Tips F 1 P 2 > P 1 F 2
Background image of page 7

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

View Full Document Right Arrow Icon
The magnitude of the friction forces F max = μ s N Where μ s is the coefficient of static friction. It is independent of normal forces and area of contact F< μ s N The general case for equilibrium condition Once the body starts to slip F= μ k N μ k is the coefficient of dynamic friction k s
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 20

Lecture 24 - ENGR-1100 Introduction to Engineering Analysis...

This preview shows document pages 1 - 9. Sign up to view the full document.

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