Unformatted text preview: 1.35 A steel pipe of 300— mm outer diameter is fabricated lion: 6— mm thick plate by
welding along a helix which forms an angle of 25 ° with a plane perpendicular to the axis
.. of the pipe. Knowing that a 250 kN axial force P is applied to the pipe, determine the
I 1, normal and shearing stresses in directions respectively normal and tangential to the weld. SOLUTION
do: 0.300», m = lat, = om: m
r; = Y‘o—t = (115049.003 : (“ch AD —_ nu: v9) = n(onso‘ — o. 14%)
=3 5.54 “0‘3 M1 ‘ ='37.I xlo 6‘=’37.1HPQ. 4
l q: = .E. in 29 \. 250xro3 Sin 50° 2A. 5' (mm! x10“)
247.28 mo: ’5: 17.28 “Pa.“l 1.36 A steel pipe of 300 mm outer diameter is fabricated from 6 mm thick plate by
‘; PROBLEM 1'36 welding along a helix which forms an angle of 25 ° with a plane perpendicular to the axis
of the pipe. Knowing that the maximum allowable normal and shearing stresses in
directions respectively normal and tangential to the weld are c = 50 MP3 and r = 30
MPa, detemtine the magnitude P of the largest axial force that can be applied to the pipe. SOLUTION
an: 0.300». tealcl“ alsoin
= rot = 0.!6‘0 no.0“. = 0.149 M A, = I (r3 r2") = 1r(o. 156‘— omm‘)
= 5.54 no" m‘ 9 = 25°
1 Base} an l5i= 50 MP6; 6“: £ c.0529
; Pr ees—i= :————l‘“25 W?
1 Base; on ’I:l = 30 M91 '2: = 5%, 5.». 29
P= RAJ! 2 (21(ssgxzo‘32geoxio‘2 z 434x103
5M 26 sin 50' smﬁe» Vaduz is 'He Jﬁawa/Lle value 6?? :7. P: 33') k” em V ‘ ,.._., .....F___...__.___. 7,”, Wk“, rAernmww—n. _+._..,,.... ...
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