Lehigh University
CEE 59 Strength of Materials
Practice for second interim exam
Note: these problems are on the same two general topics covered by the exam (Shear and Torsion),
but they may be very different from the actual problems that end up in the exa
STUDENT NAME:
30 20 30 The cross section in the ﬁgure is subjected to an eccentric compressive
mm mmi mm load P. Determine the maximume allowable value of P for a limiting
E "“ ' '1 all tensile stress of 35 MPa and a limiting compressive stress of 80
midspan
20cm
5cm
P
20cm
5cm
Consider the L-shaped cantilever rod in the figure. The rod is 3m long and the
dimensions of the cross section are indicated in the figure. The rod is subjected to a
tensile axial load = 1.5 MN at the free end. By equilibrium,
Lehigh University
CEE 59 Strength of Materials Spring 2015
Miniquiz #1 January 29, 2015
STUDENT NAME:
Two rods with different cross-
section and materials are I
connected in series, as presented A B E C TJ:
in the figure. Both rods have a ' '
square cross
Lehigh University
( CEE 59 - Strength of Materials Spring 2015
' Miniqniz #2 - February 10, 2015
STUDENT NAME:
A steel bar and an aluminum bar are bonded together to form
the composite bar shown in the gure. The dimensions and
the moduli of elasticity a
Lehigh University
CEE 59 Strength of Materials
Practice for second interim exam
Note: these problems are on the same two general topics covered by the exam (Shear and Torsion),
but they may be very different from the actual problems that end up in the exa
Lehigh University
CEE 59 Strength of Materials
Miniquizz #6 April 9, 2015
STUDENT NAME: _Solution_
18 ksi
For the state of plane stress in the figure:
a) Draw Mohrs circle
b) Compute the principal stresses
c) Compute the angles associated with the princip
Lehigh University
CEE 59 Strength of Materials
Miniquiz #5 April 2, 2015
STUDENT NAME: _
A
B
C
For the thin-walled tubular section in the figure, determine the
value of the shear stress at points A, B and C using the following
data:
= 4.5 kNm
= 90 mm
=
30 /U y)
The beam represented in the ﬁgure is subjected to a
vertical shear force V = ZkN. Determine the shear stress
at points A and B. The dimensions of the section are
indicated in the ﬁgure. The thickness of each thin-walled
segment is t = 15 mm. " Q,