ME4214 Mechanical Behavior of Materials Spring 2016
Tuesday / Thursday 12:05pm 1:25pm
Location: Love 184
Prerequisites
Mechanics of Deformable Bodies (COE 3001)
Textbook
Mechanical Behavior of Materials Engineering Methods for Deformation, Fracture
and Fa
Practice Midterm
ME 4214 Spring 2016
Problem 1
Problem 2
Calculate u,
~
,
~
,
~
,
~
u f f
at onset of necking.
Problem 3
Determine the direction of yielding using Tresca criterion.
ME 4214
Equation Sheet for Midterm 1
Hookes Law in 3D
x
1
x ( y z )
E
13.2 The temperature dependence of material properties 279
L‘ - 0.15
if Fracture
t'w
.l v:-
i7-
. Tertiary
l ‘j I 0 1 creep
., r g '
I. a) Steady—state creep
' 0.05 _
I
.
1 Time to
} fracture, t,
I
1 1o2 104 1o6 105
Time t(s)
Figure 13.3 Creep te
ME 4214 Spring 2016
Lecture 7: Manipulating Strength of Metals
Lesson Objectives
Explain the concept of lattice resistance
Explain the concept of line tension of a dislocation
Explain the following strengthening mechanisms:
o solid solution hardening
o pr
ME 4214 Spring 2016
Lecture 6: Origins of Yielding
Lesson Objectives
Explain the origin of yielding in polymers.
Define cold drawing and crazing.
Explain the origin of yielding in metals. Describe the motion of an edge
dislocation under shear stress.
Defi
ME 4214
Equation Sheet for Midterm 1
Hookes Law in 3D
x
1
x ( y z )
E
y
1
y ( x z )
E
z
1
z ( x y )
E
xy xy
G
yz yz
G
zx zx
G
Relationships between Engineering stress/strain and True stress/strain
Ramberg-Osgood Equation:
~
~ n
(n strain hardenin
ME 4214
Lecture 11: Problems on Yielding Criteria
Problem 1
A block of 2024-T4 aluminum (0 = 303 MPa) is subjected to a confining pressure on all sides of p = 100
MPa, along with a shear stress xy.
1. What is the largest value of xy that can be applied if
ME4214 Mechanical Behavior of Materials Spring 2016
Tuesday / Thursday 12:05pm 1:25pm
Location: Love 184
Prerequisites
Mechanics of Deformable Bodies (COE 3001)
Textbook
Mechanical Behavior of Materials Engineering Methods for Deformation, Fracture
and Fa
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ore it
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Figure 1.2
1.2 Material properties 5
All as it sh