ME 382 Winter 2017
Homework 5
(Due Friday, February 17, 2017)
1.
Explain the following observations:
(i) Nickel can be strengthened by adding small hard particles of thoria.
(ii) At room temperature, the yield strength of pure silver (~50 MPa) is much
low
Due in class Thursday 01/26 (section 1 Capecelatro) Wednesday 01/25 (section 2 Johnsen)
Problem set #2 ME 320 Winter 2017
Problem 1: FM 2.48
Problem 2: FM 2.66
Problem 3: FM 2.78
1
Problem 4: FM 3.15
Problem 5
Two systems are filled with a liquid are show
Due in class Thursday 02/16 (section 1 Capecelatro) Wednesday 02/15 (section 2 Johnsen)
Problem set #5 ME 320 Winter 2017
Problem 1: F & M 2.33
Problem 2: F & M 4.12
Problem 3: F & M 4.35
1
Problem 4: F & M 4.43
Problem 5
2
Lecture 30 - Modeling creep
COMBINED MODELING OF CREEP, ELASTC AND PLASTIC DEFROMATION
Total strain consists of elastic + plastic +creep component
total = elastic + plastic + creep
n
For uniaxial case: elastic = /E ; plastic = A ;
d creep
dt
= o
o
n
Problem 5 Solution
The weight of this pressure vessel per unit length is given by:
w = gh(Dt) = (7700)(9.81)()(1)(0.05) = 11865.3 N/m
Therefore the maximum bending moment is Mmax =
the maximum axial stress is
max
zz
=
wL2
(11865.3)(6)2
=
= 53392.5 Nm, and
ME 382 Winter 2014
Homework 7
(Due Friday, November 4, 2014)
Use the von Mises yield criterion if appropriate
1.
2.
Given c = 0:296nm, a = 0:285nm, the volume of one unit cell
3.
a:
b:
c:
d:
e:
f:
100% martensite
80% martensite and 20% retained austenite
4. Leak-before-break Design Solution
(a) By HW4, we know that the critical pressure is Pc = 9.2 MPa. The required fracture toughness is then given by
1
KIc t
Pc R
2
r
> 9.0t KIc > 3Pc R
= 109.4 MPa m1/2
t
(b) Without the safety factor, we have
1
KIc t
Pc
ME 382 Winter 2016
Homework 6
Solution
1.
Copper alloys containing some beryllium can be hardened by precipitation / age
hardening. These alloys, known as beryllium copper or beryllium bronze, have
very high strengths, electrical conductivity, and low dam
Lecture 29 - Introduction to creep
CREEP
Instantaneous response to a load is elastic or plastic deformation
= f ( )
In general, all materials exhibit additional deformation with time
= f ( ,t )
This is known as creep
Importance of instantaneous response
ME 382 Fall 2016
Homework 5
(Due Friday, October 21, 2016)
1.
It has been shown (M.R. Staker, D.L. Holt, Acta Metal. Volume 20, Issue 4, April
1972, Pages 569579) that the shear strength k of a polycrystalline oxygen-free,
high-conductivity copper is pr
ME
382HOMEWORK
HOMEWORK 9 10
SOLUTIONS
ME
382
SOLUTION
p
1. (a) Based on the figure, when the stress intensity factor is 0.5 MPa pm, the crack
velocity is 10 4 m/s. when the stress intensity factor is 0.3 MPa m, the crack
velocity is 10 7.5 m/s.
da
= AK n
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er<.a . -mn- . Mumqwu-
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ME 538
Advanced IC Engines
Homework Set #1
Winter 2016
22 points (2 points each unless noted otherwise)
Textbook Problems (from Heywood, IC Engine Fundamentals)
3.13, 4.13, 4.14, 4.16, 5.12, 9.12, 9.13, 9.14
Supplementary Problems
Problem S1* According to
ME538
ME538 Advanced IC Engines
Winter 2013
Exam 1
Name
Score
Page 1: 10 points
Page 2: 10 points
Page 3: 10 points
Page 4: 5 points
Total = l 25 points
Leave the solution in terms of the given variables throughout your analysis.
numerical values until
ME 538
Advanced IC Engines
Homework Set #2
Winter 2016
20 points (2 points each unless noted otherwise)
Textbook Problems (from Heywood, IC Engine Fundamentals)
10.1 (rely on SAE 970873 by Dec to help with your answer), 10.4, 10.7, 10.9, 10.10, 11.9 (you
ME 538
Advanced IC Engines
Homework Set #2
Winter 2015
20 points (2 points each unless noted otherwise)
Textbook Problems (from Heywood, IC Engine Fundamentals)
10.1 (rely on SAE 970873 by Dec to help with your answer), 10.4, 10.7, 10.9, 10.10, 11.9 (you
ME 538
Advanced IC Engines
Homework Set #3
Winter 2016
18 points (2 points each unless noted otherwise)
Use the GT-Power engine model provided in CTools to solve the following problems. The
parameters below should be held constant for all problems:
Engine
ME538 GT-Power Tutorial 2
Exercise 1: On the fly engine control
o Under run setup, set max simulation cycles to 300 and automatic shutoff when steady state to off.
o Under Libraries on the bottom left, Control tab
Customized Output, drag and drop a Monit
ME538 GT-Power Tutorial 1
Exercise 1: Engine speed sweep
o Under case setup, insert multiple cases and do an engine
speed sweep from 1200 3000 rpm.
o Run the model.
o Open GT-Post and compare combustion characteristics and
performance metrics under Cylind
ME 538
Advanced IC Engines
Homework Set #1
Winter 2016
22 points (2 points each unless noted otherwise)
Textbook Problems (from Heywood, IC Engine Fundamentals)
3.13, 4.13, 4.14, 4.16, 5.12, 9.12, 9.13, 9.14
Supplementary Problems
Problem S1* According to
ME395
Force Measurement - Student Guide
Force Measurement Student Guide
1.1. Procedure
The following is a general procedure for this experiment a basic
guideline. Please consult the class procedure for specific instructions
on executing this experiment.
G
Fall 2016
HW#1
ME 433/AUTO533
Advanced Energy Solutions
Homework Set #1
Fall 2016 - Sections 001, 002 and 881
50 points (2 points each unless noted otherwise)
Problem 1 (4 points) 1a) How long would you need to run on the treadmills to expend
ME 395 Fall 2016
September 6, 2016
Introduction
ME 395 involves experimentation and uncertainty, report writing, and student teamwork. Success in ME 395 requires planning and coordination. To facilitate course organization, information has been posted on
Name _
ME395 Homework 2 (Lab 2)
This homework will look at calculation of frequency error in two different ways, using a portion of your
data from the weeks lab. This worksheet should help you in your analysis for the lab report. Because
data will vary am
ME 360: Modeling, Analysis and Control of Dynamic Systems
Professors Stein
University of Michigan, Fall 2016
Recitation #1
Assigned: Fri. Sept. 16, 2016
Due: Wed. Sept. 21, 2016
1. Problem 2.7, page 109
2. Problem 2.19
3. Look up the tutorial to find out
ME 360: Modeling, Analysis and Control of Dynamic Systems
Professors Stein
University of Michigan, Fall 2016
Homework #3
Assigned: Thurs. Sept. 15, 2016
Due: Thurs. Sept. 22, 2016
Students may work together on the homework assignments, but individually pr
ME395
Student Guide
1 Pressure Measurement Student
Guide
The following document provides the ME395 student with a fundamental procedure
for conducting the pressure measurement experiment. The students should consider
issues with the test set-up and the ef