MAE 2323 Dynamics
Homework #2
Due September 18
1
Write up the following problems up to the Degrees-of-Freedom(DOF): section of the Example Homework Solution given in Sec. 8 of the supplemental course notes. Do not work the problem as stated
in the text; h
MAE 2323 Dynamics
Homework #6 solutions
Due July 10
(568pts)
1
Find the equations of motion for the following problems. Use the format given in the course notes and
complete all sections except for the solution to the problem.
26. (61pts) Problem 13-2 on
MAE 2323 Dynamics
Homework #1
(297pts)
Due September 11
1
Write up the following problems up to the Coordinates: section of the Example Homework Solution
given in Sec. 8 of the supplemental course notes. Do not work the problem as stated in the text;
howe
MAE 3344 Manufacturing
Spring 2011
HW#7 Solutions
13.2 Define a) roll gap, b) neutral point, and c) draft.
a) roll gap: the gap from when the material comes into contact with the rollers and the material has no
more contact with the rollers.
b) neutral po
MAE 2323 Dynamics
(245pts)
Homework #5 solutions
Due July 3
1
Finish the following problems. Omit the Mass Properties, Forces and Moments, and Equations of
Motion, sections from your write up; include all other sections though. Finish the problem starting
MAE 3344 Manufacturing
Spring 2011
HW#8 Solutions
17.1 Describe briefly the production steps involved in making powder-metallurgy parts.
Production steps involved in making powder-metallurgy parts are:
Powder production- atomization, reduction, electrolyt
MAE 2323 Dynamics
Homework #7 solutions
(317pts)
Due July 19
1
Find the equations of motion for the following problems. Use the format given in the course notes and
complete all sections except for the solution to the problem. Use the work-energy theorem
MAE 2323 Dynamics
Homework #8 solutions
(442pts)
Due July 26
1
Solve the following problems using impulse-momentum theory.
34. (73pts) Problem 15-13 on page 231 of the textbook. The 2.5Mg van is traveling with a speed of
100km/h when the brakes are applie
MAE 2323 Dynamics
Homework #9 solutions
Due August 2
(772pts)
1
Solve the following problems.
(2pts)
^
YA j
37. (123pts) Problem 17-13 on page 406 of the textbook. The wheel consists of a thin ring having a mass
of 10kg and four spokes made from slender r
TYPES OF CRYSTAL IMPERFECTIONS
Vacancy
Interstitial atoms
(impurity or self)
Substitutional atoms
Point defects: 0-dimensional
Dislocations
Line defects: 1 dimensional
Grain Boundaries
Stacking faults
Area defects: 2 dimensional
Inclusions
Second
Hexagonal close-packed structure (HCP)
3D Projection
2D Projection
A sites
B sites
A sites
Lattice parameters: a and c
ABAB. Stacking
Coordination # = 12
APF = 0.74
Adapted from Fig. 3.3,
Callister 6e.
(Not centered in cell)
Translatable
unit cell
Fac
Chapter 9 : Failure
This presentation includes figures and images from Callister text and instructor materials.
Brittle fracture surface
transgranular
160mm
intergranular
4 mm
BRITTLE FRACTURE
Intragranular
(within grains)
Intergranular
(between grains)
MAE 3324
Homework #3
Chapter 4, problems 2, 6, 7, 11, 12
4.2 (a) Compute the repeat unit molecular weight of polypropylene.
(b) Compute the number-average molecular weight for a polypropylene for which the degree of
polymerization is 15,000.
Solution
(a)
Homework 9
Callister 3rd edition chapter 8 problems 1, 10, 12, 15 and the questions below.
1. Define a slip system. Do all metals have the same slip system? Why or why not?
A slip system is a crystallographic plane, and a direction within that plane along
Phase Diagrams
1
Components, phases and microconstituents
Components: The elements or compounds which are
mixed initially (e.g., Al and Cu, or sugar and water)
Phases: The physically and/or chemically distinct
material regions (e.g., liquid and solid H2
MAE 2323 Dynamics
Homework #5 solutions
Due July 3
1
Finish the following problems. Omit the Mass Properties, Forces and Moments, and Equations of
Motion, sections from your write up; include all other sections though. Finish the problem starting
from the
MAE 2323 Dynamics
Test #1 solutions
June 28, 2012
(243pts)
1
Find the number of degrees-of-freedom for the following problems and all of the associated information. Do
not work the problem as stated; but you may use information from the problem statement
MAE 3344 Manufacturing
Spring 2011
HW#2 Solutions
25.8
1)
2)
3)
4)
5)
6)
What Factors contribute to costs in machining operations?
Machine tools, work handling devices and fixtures, and cutting tools.
Labor and overhead
The time consumed in setting up the
Spring 2011
MAE 3344 Manufacturing
HW#3 Solutions
8.1 Compare the major differences between the properties of ceramics and those of metals and plastics.
The most significant difference between ceramics and metals/plastics lies in their atomic makeup.
Cera
MAE 3344 Manufacturing
Spring 2011
HW#2 Solutions
4.3 What are the conditions for obtaining (a) substitutional solid solution and (b) Interstitial solid
solution?
(a)
1. The two metals must have similar crystal structures.
2. The difference in their atomi
MAE 3344 Manufacturing
Spring 2011
HW#6 Solutions
10.3 What are dendrites? Why are they called so?
Dendrites in metallurgy is a characteristic tree-like structure of crystals growing as molten metal freezes,
the shape produced by faster growth along energ
Spring 2011
MAE 3344 Manufacturing
HW#4 Solutions
22.1 What are the major properties required of cutting tool materials? Why?
Hot Hardness ensures that the tool does not undergo any plastic deformation and retains its shape
and sharpness. Carbon tool stee
MAE 3344 Manufacturing
Spring 2011
HW#10 Solutions
32.1 What is the difference between brazing and braze welding?
Brazing is a joining process in which a filler metal is placed between the faying surfaces to be joined and
the temperature is raised suffici
MAE 3344 Manufacturing
Spring 2011
HW#9 Solutions
20.2 What is stereolithography?
Stereolithography is a common rapid prototyping process that actually was developed prior to fuseddeposition modeling. This process is based on the principle of curing a liq
MAE 3344 Manufacturing
Spring 2011
HW#11 Solutions
35.6 Why have coordinate measuring machines become important instruments?
Coordinate measuring machines become important instruments because they are very versatile and
capable of recording measurements o
The University of Texas at Arlington
Department of Mechanical and Aerospace Engineering
MAE 1105.00X: Introduction to Mechanical and Aerospace Engineering (13 pt.)
cfw_X Replace with correct section number
Title of Experiment (14 pt., Bold)
By
Authors Ful
MAE 2323 Dynamics
Homework #4
Due October 11
1
Solve the following problems. In addition to what was done on the previous homeworks, include information
for the Acceleration: section as shown in the Example Homework Solution given in Sec. 8 of
the supplem