Timothy A. Philpot - Mechanics of materials _ an integrated learning system-John Wiley (2017)

MecMovies
ExAMpLES
M4.1 The structure
shown is used to support a
distributed load of w =
15 kN/m. Each bolt at A,
B, and C has a diameter of
16 mm, and each bolt is
used in a double-shear
connection. The crosssectional
area of axial
member (1) is 3,080 mm 2 .
The limiting stress
in axial member (1) is
50 MPa, and the limiting
stress in the bolts is 280
MPa. Determine the factors of safety with respect to the
specified limiting stresses for axial member (1) and bolt C.
M4.2 Two steel plates are connected by a pair of splice
plates with eight bolts, as shown. The ultimate strength of
the bolts is 270 MPa. An axial tension load of P = 480 kN is
transmitted by the steel plates.
If a factor of safety of 1.6 with respect to failure by
fracture is specified, determine the minimum acceptable
diameter of the bolts.
M4.3 The structure
shown supports a distributed
load of w kN/m. The
16 mm diameter bolts at
A, B, and C are each used
in double-shear connections.
The cross-sectional
area of axial member (1)
is 3,080 mm 2 .
The limiting normal
stress in axial member (1)
is 50 MPa, and the limiting
stress in the bolts is
280 MPa. If a minimum
factor of safety of 2.0 is
required for all components, determine the maximum allowable
distributed load w that may be supported by the
structure.
ExERcISES
m4.1 The structure shown supports a specified distributed load.
Suppose the limiting stresses for rod (1) and pins A, B, and C are
given. Determine the axial force in rod (1), the resultant force in pin C,
and the factors of safety with respect to the specified limiting
stresses for rod (1) and pins B and C.
FIGURE M4.1
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