ME 3671 Fall 2016: Homework 2
Due Monday Sept 19, 2015
1. A short shoe brake consists of a 10 diameter drum
and an actuation arm configured as shown. The shoe
is molded fiberglass, the drum is aluminu
ME 3671 Fall 2015: Homework 1
Due Wednesday Sept 9, 2015 at beginning of class
1. An existing helical-coil compression spring is wound from
unpeened music wire with a diameter of d= 0.105. The mean
di
ME 3360 Autumn 2017
Homework assignment 1
Homework Assignment 1
Review (Plus) of ME 3260
DUE in Class, Friday, Sept. 1, 2017
Make sure your work is legible. Illegible work will not receive any credit
ME 3671 Fall 2015: Homework 4 Solutions
1. The gears in the gear trains shown have a normal
diametral pitch of 4, a normal pressure angle of 20,
and a 30 helix angle.
For both gears the
transmitted lo
CSE 2321 Foundations I Autumn, 2016 Dr. Ilin
Homework 4
1. (10 points) Consider the Cartesian product of sets. Does it distribute over set
intersection? Over set union? Prove your answer.
Start with t
ME 3671 Fall 2016: Homework 2 Solutions
1. A short shoe brake consists of a 10 diameter drum
and an actuation arm configured as shown. The shoe
is molded fiberglass, the drum is aluminum-bronze,
and t
ME 3671 Fall 2015: Homework 2 Solutions
1. A short shoe brake consists of a 10 diameter drum
and an actuation arm configured as shown. The shoe
is molded fiberglass, the drum is aluminum-bronze,
and t
Example Problem 1
A disk brake used in a printing machine is designed as shown.
The brake pad is mounted to an arm that can swivel about
point O. Determine the braking torque when a 5000 N force is
a
SPRINGS
Announcements
HW1 due Friday 9/8 beginning of class
Mini-project due Monday 9/11
Project start brainstorming
Plan for Today (for these slides)
Very quick review of springs
compression
tens
Long Shoe Example
For the external rim brake shown, the pad width is
wc=3. The drum rotates counterclockwise at 200
rpm and an actuation force of 1000 lb is applied to
actuation arm AC. The coefficie
Leaf spring
Example
A multileaf simply supported spring is to be designed for the rear wheels of a 3500lb truck for which 65%
of the vehicle weight is supported by the rear wheels. The static mid-span
Tension spring
Example
A round wire helical-coil tension spring has end loops of
the type shown. The wire diameter of the spring is 0.042
inch, and the mean coil radius is 0.28 inch. Pertinent
end-loo
Torsion spring
Example 1
Assum a stock spring is made from a music wire with
wire diameter of 0.07in and outer coil diameter of
0.593 with = 289ksi and = 217ksi. The
spring has a total of 4.25 coils (
ME 3671 Midterm III
1) The exam consists of 3 questions, each containing multiple parts.
2) The amount of points associated with each question and each part is
shown.
3) To get partial credit: Write t
Problem 1 (15 pts)
A uniform electric motor operating at 2000 rpm
drives a machine that exhibits light shock through
a at belt that is 2.0 in. wide and 0.15 in. thick.
The belt has a design allowable
Problem 1 (15 pts)
For the gear train shown, the input speed is 200
rpm on the top sha as shown. Consider the input
direction of motion as CW. All gears have a
diametral pitch of 4.
A) Determine the n
ME 3671 Fall 2016: Homework 6 Solutions
1. From a strength-based shaft design calculation, the shaft diameter at one of the bearing sites
on a steel shaft has been found to be 38 mm. The radial load a
Helical Gear Example Problems
1.
A pair of meshing helical gears has a normal pressure angle of 20, a diametral pitch of 5, and a normal
circular pitch of 0.55 in. The driver has 18 teeth and the foll
Belts
Chapter 17
Belts 2
Compound Belts and
Slippage
Velocity Ratio of a Belt Drive
The ratio between the velocities of the driver and the
follower or driven may be defined as follows:
Let
d1 = diamet
Page 1 of 3
CSE 2321 Foundations I Autumn, 2016 Dr. Ilin
Homework 5 SOLUTIONS
1. A path in a graph is called simple if all of its vertices are distinct. In the
graph depicted below, how many simple pa
CSE 2321 Foundations I Autumn 2016 Dr. Ilin
Homework 5 Due: Tuesday, Nov 1, 2016 (50 point)
1. (10 points) A path in a graph is called simple if all of its vertices are distinct. In
the graph depicted
CSE 2321 Foundations I Autumn, 2016 Dr. Ilin
Homework 3 solutions
1. Let A = cfw_a, b, c and B = cfw_b, d, f. Well write POW(S) to denote the
power set of a set S.
(a) What is
SOLUTION:
?
, b
(b) Wh
CSE 2321 Foundations I Autumn 2016 Dr. Ilin
Homework 3 Due Thursday, Sep 22, 2016
1. (10 points) Let A = cfw_a, b, c and B = cfw_b, d, f. Well write POW(S) to denote the power set
of a set S.
(a)
What
CSE 2321 Foundations I Autumn 2016 Dr. Ilin
Homework 1-Due Sep 1
1. (10 points) For each of the following propositions (also known as
Boolean expressions), prove, by means of a truth table, whether it
CSE 2321 Foundations I Autumn, 2016 Dr. Ilin
Homework 6 Due: Thursday, Nov. 10 (50 points total)
1. (10 points) Answer true or false, with justification:
(a) If an undirected graph G has exactly three
LEAF AND TORSION SPRINGS
Leaf Springs
Leaf springs are typically modeled as
cantilevered beams with an end load
applied. The principal relations used are
those for flexure stress and end deflection
(r
CSE 2321 Foundations I Autumn, 2016 Dr. Ilin
Homework 4 Due Sep 29, 2016
1. (10 points) Consider the Cartesian product of sets. Does it distribute over set
intersection? Over set union? Prove your ans
ME 3671 Fall 2015: Homework 3 (Spur Gears)
1. Two shafts 7.50 inches apart are connected by spur
gears A and B making external contact. Gear A rotates at
1150 rpm and gear B rotates at 350 rpm. The di
page 1 of 4
CSE 2321 Foundations I Autumn 2016 Dr. Ilin
Homework 2 due Sep 13
1. (10 points) Let x be the set of all cars is the world.
Let C(x) be the predicate x is a Corvette.
Let P(x) be the predi
ME 3671 Fall 2016: Homework 4 Solutions
1. The gears in the gear trains shown have a normal
diametral pitch of 4, a normal pressure angle of 20,
and a 30 helix angle.
For both gears the
transmitted lo