CLARKSON UNIVERSITY
Department of Mechanical and Aeronautical Engineering
AE/ME 350 Aircraft Structural Analysis (Fall 2010)
Sample Test #2 Closed book
Closed notes
Time 1:15 hour
1. Sketch a V-n diagram and label the axes and the limit lines.
(5)
2. What is the significance of the shear center of a beam cross-section?
(5)
3.
Determine the shear flow distribution in walls AB, BC and CD for the thin-walled beam of
uniform cross-section (outer dimension 80 mm x 80 mm) as shown below.
A shear force
of 2000 N is acting vertically up through the shear center. The ‘cut’ at point A is
infinitesimally small.
Use I
y=
85.35 cm
4
.
(25)
40
40
80
2.5
All dimensions in mm
A
B
C
D
4.
Determine the shear flow and shear force in each cell of the multi-cell thin-walled box beam
subjected to external shear force and torque simultaneously.
Check your answers by
satisfying balance of forces.

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