DYNAMIC FORCE ANANYSIS
ME 370
Lectures 18-20
Reading:
Norton, Chapter 10.1-10.8, 11
Chap 10.1-10.8, 11 (DFA)
Dynamics Fundamentals
Newtons laws
Mass moment ,Center of gravity
Mass moment of inertia, Parallel axis theorem
Radius of gyration
Force Analysi
Balancing of Rotating
Machinery
Reading:
Norton, Chapter 12
Ch. 11.8, 11.11, 12
(Balancing of Rotating Machinery)
Shaking force and torque
Static balancing
Dynamic balancing
Balancing more complex planar mechanisms
Important for
Rotating machinery (gas t
Section 13 Materials Testing Group
September 29, 2014
Mr. George Li
ME330 Foil Co.
123 UIUC Road
Urbana, IL 61801
Dear Mr. Li,
Our research team has finished testing the effects of cold work and annealing on brass. I have
attached tables and a graph summa
Brass Testing
Matthew Milner
ME 330 AB6 TA
104 S. Wright Room: 201
Champaign, IL 61820
October 1, 2014
I am pleased to let you know that we successfully completed the cold work
testing on annealed and cold work brass specimens. You will find attached at t
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Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only
to students enrolled in courses for which the textbook has been adopted. Any other reproduction or translation o
Supplementary Homework 8 (Chapter 11) Solutions
ME 330 Spring 2016
11.1 (a) List the four classifications of steels. (b) For each, briefly describe the properties and typical
applications.
Solution
This question asks that we list four classifications of s
ME 330 - Exam # 2
S. Nam
April 7 (Thursday) at 7 pm 9 pm, Talbot 103
Closed book and notes (2 page formula sheet provided posted on Compass)
Please bring a i-Card, pen/pencil, a calculator and a ruler!
Conflict Exam (tentative): 4/6 at 5-7pm; Location TBD
WELDING AND ALLIED PROCESSES
ME 330
Engineering Materials
Lab 8
Spring 2016
1045 Steel. Low Power Weld
1045 Steel. Normal Power Weld
2016 The Board of Trustees of the University of Illinois
ME330 Engineering Materials
2
I. INTRODUCTION
Nearly all product
ME 330
Spring 2016
Laboratory #1, Compression and Hardness
Individual, Formal Report
Tables and graphs must be titled.
Properties in tables must include units.
Graphs must have clearly labeled axes with units.
Analysis of Results & Points for Discussion
1
Supplementary Homework 7 (Chapter 10) Solutions
ME 330 Spring 2016
10.11 (a) From the curves shown in Figure 10.11 and using Equation 10.18, determine the rate of
recrystallization for pure copper at the several temperatures.
(b) Make a plot of ln(rate) v
Supplementary Homework 9 (Chapter 8)
ME 330 Spring 2016
8.5 A specimen of a 4340 steel alloy having a plane strain fracture toughness of 45 MPa m ( 41 ksi in. )
is exposed to a stress of 1000 MPa (145,000 psi). Will this specimen experience fracture if it
Supplementary Homework 7 (Chapter 10)
ME 330 Spring 2016
10.11 (a) From the curves shown in Figure 10.11 and using Equation 10.18, determine the rate of
recrystallization for pure copper at the several temperatures.
(b) Make a plot of ln(rate) versus the
Supplementary Homework 8 (Chapter 11) Solutions
ME 330 Spring 2016
11.1 (a) List the four classifications of steels. (b) For each, briefly describe the properties and typical
applications.
11.6 Compare gray and malleable cast irons with respect to (a) com
ME 330
Spring 2016
Laboratory #7, Impact and Fracture Toughness
This lab report will be a group, PowerPoint presentation. An actual oral presentation will be given
during the week beginning Apr 11 and your PowerPoint file should be printed out in Handout
ME 330
Spring 2016
Laboratory #4, Phase Diagrams and Casting
Group, Formal report
Tables and graphs must be titled.
Properties in tables must include units.
Graphs must have clearly labeled axes with units.
Analysis of Results & Points for Discussion
1)
P
ME 330 - Exam # 1
S. Nam
March 1 (Tuesday) at 7 pm 9 pm, Loomis 151
Closed book and notes (2 page formula sheet provided posted on Compass)
Please bring a i-Card, pen/pencil, a calculator and a ruler!
Conflict Exam (tentative): 2/29 at 5-7pm; Location TBD
15. a)
Linear since it has the same frequency as the input of 3.2 with no phase shift. Also there was a x2
magnitude change between going from 2.45mm to 4.9mm.
b)
Non-linear the magnitude change is not equivalent to the x2 from going from 2.45 to 4.9. Wit
ME 320 Fall 2014
Homework #5 Solutions
1. a) There is no heat flux on either constant-z boundary, and the temperature distribution is at steady
state. Hence, there will be no variation T with z. For constant conductivity, the partial
differential equation
ME 320 Fall 2014
Homework #2 Solutions
1. The heat transfer rate into the block is
Q = q nin dA
A
where q is the heat flux vector, nin is the inward unit normal, and A is the surface area of the brick.
The volume is a rectangular parallelepiped, so that t
ME 320 Fall 2014
Homework #6 Solutions
1. a)
1
2
3
4
5
x1
x2
x3
x4
x5
x=0
x = 3 cm
x = 6 cm
x = 9 cm
x = 12 cm
T = 20 C
T = 40 C
where the red bar indicates the extent of the heated region. The differential equation is
d 2T
5 W m d 2T 0.2 W
d 2T 4 K
0= k
ME 320 Fall 2014
Homework #4 Solutions
1. The (nonhomogeneous) ODE governing the problem is
dT 2 hP
(T T ) = 0
dx 2 kAc
dT ( L)
The boundary conditions are T (0) = Tb and k
=
h [T ( L) T ]
dx
kAc
dT 2
hP(T T ) = 0
dx 2
There are many ways to solve the O