16.20
Handed Out:
Lecture 36
Due:
Lecture 43
HOME ASSIGNMENT #9
(accompanies Design Problem #4)
WarmUp Exercises
None
Practice Problems
None
Application Tasks
Consider the circular shell beam crosssection shown in the accompanying
figure. This cross section has four stringers connected by skins. There is also a
floor connecting two stringers across the crosssection. The top and bottom
stringers have the same area A
1
while the left and right stringers have the same
area A
2
. The stringers are all made of the same material with modulus E. The
skins are made of the same material with shear modulus G and all have the same
thickness, t
s
. The floor is made of the same material as the skins but has a
different thickness, t
f
. The radius of the crosssection is R.
A
2
z
y
R
A
1
A
1
A
2
t
s
t
f
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View Full Document16.20 Home Assignment #9
Page 2
Fall, 2002
This crosssection is a generalization of the crosssection to be considered for the
aft fuselage in Design Problem #4. You are to analyze the response of the shell
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 Fall '02
 PaulLagace
 Cartesian Coordinate System, Shear Stress, Shear strength, shell beam crosssection

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