The Eshelby Approach to Modeling Composites:
Internal stresses are commonplace in almost any material which is mechanically
inhomogeneous.
Internal stresses arises as a result of some kind of misfit between the shapes of the
constituents.
Such a misfit co
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ISO LATE D FI
CE 7485
04/02/2012
HOMEWORK # 8
Moinul Islam Mahdi
Department of Civil Engineering
Example: 1
Given,
Maximum Stress:
Using the transformation equations we can thus write in a general from the following results
From the given values above:
We got,
The lami
CE 7485
03/19/2012
HOMEWORK # 7
Moinul Islam Mahdi
Department of Civil Engineering
Problem: 4.1
Given Data,
The governing differential equation for a beam composed of composite
material in which
Where b is the beam width, is the flexural stiffness in the
CE 7485
03/14/2012
HOMEWORK # 6
Moinul Islam Mahdi
Department of Civil Engineering
Problem: 17
Given Data,
A laminate is composed of graphite epoxy with following properties:
Assuming,
Thickness of Lamina= 0.01 inch
For Lamina
Solution:
For calculating A,
CE 7485
03/05/2012
HOMEWORK # 5
Moinul Islam Mahdi
Department of Civil Engineering
Problem: 3.2
(a) Given Data,
Thickness= 1in
a= 30in and b=20 in
Solution:
We know,
The fundamental natural frequency (m=n=1)
By calculating we got,
The natural frequency in
CE 7485
03/05/2012
HOMEWORK # 2
Moinul Islam Mahdi
Department of Civil Engineering
Problem: 17
Given Data,
A laminate is composed of graphite epoxy with following properties:
Thickness of Lamina= 0.0125 inch
For Lamina
Solution:
For calculating A, B and D