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Unformatted text preview: Problem 7.2“ A rectangular plate of dimensions 3.0 in. X 5.0 in. is
formed by welding two triangular plates (see ﬁgure). The plate is subjected
to a tensile stress of 500 psi in the long direction and a compressive stress of
350 psi in the short direction. ‘ Determine the normal stress orw acting perpendicular to the line of the
weld and the shear stress 7W acting parallel to the weld. (Assume that the
normal stress ow is positive when it acts in tension against the weld and the
shear stress 7W is positive when it acts counterclockwise against the weld.) Problem 7211 A rectangular plate of dimensions 3.0 in. X 5.0 in. is
formed by welding two triangular plates (see ﬁgure). The plate is subjected I
to a tensile stress of 500 psi in the long direction and a compressive stress of if:
350 psi in the short direction. 5
Determine the normal stress (7w acting perpendicular to the line of the
weld and the shear stress ’rw acting parallel to the weld. (Assume that the
normal stress crw is positive when it acts in tension against the weld and the
shear stress 7w is positive when it acts counterclockwise against the weld.) ‘73,: 2 + 2 c0520+rxysin26
=27Spsi erg—cry.
7m:‘" 2 SanGrrv c05292—375 psi
“y,=0'x+0’y‘“0‘x,=125psi STRESSES ACTING ON THE WELD j: owl: lZipsi
at 1“". Ea
__ . .. _ . r: X . '
a}  500 psi. cry ~— 350 psz TX), 0 7w 6 375 P51 ‘19 =30.96°
in.
6 = arctan : = arctan 0.6 = 30.96°
5 1n.
(7W = ‘125 psi 4 TW 2 375 psi 4 f x}; 52:2. ...
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 Winter '06
 Lynch

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