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Unformatted text preview: 2.1 Two gage marks are placed exactly 250 mm apart on a 12-mm—
diameter aluminum rod. Knowing that, with an axial load of 6000 N acting on
the rod, the distance between the gage marks is 250.18 mm, determine the
modulus of elasticity of the aluminum used in the rod. 9?.8 An 80-malong wire of 5-mm diameter is made of a steel with E = and an ultimate tensile strength of 400 MPa. If a factor of safety of
" sited, determine (a) the largest allowable tension in the wire, ([9) the nding elongation of the wire. ‘ u a . ‘
Red mTavyio sigh? clyggidrlcal rods are joined at B and loaded as shown
e o s ee = 200 GPa) and rod BC i .
Determine (a) the total defo ' Of brass (E : I05 GPa).
I rm t "
E non of mint B. a ion of the composite rod ABC, ([9) the deflec—
P I 30 RN
250 mm ﬂ» E30 mm 40 kN
i B —
300 mm —+ 550 mm 0 4 which E = 70 GPa.
= 42 kN, determine the deﬂection of (a) point rlg. PZJU 20—min dimm'lr‘r (in—mm diameter Fig. P2.19 and P220 2.26 Each of the links AB and CD is made of steel (E : 29 X 106 psi)
and has a uniform rectangular cross section of X l in. Determine the largest load which can be suspended from point E if the deﬂection of E is not to ex—
ceed 0.01 in. Fig. P226 2.27 Each of the links AB and CD is made of aluminum (E : 75 GPa) 0.36 m 7, ,_.C <— ().44 111—» B 0.20 m
Fig. P227 ...
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- Fall '08