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PROBLEM (8.26) A welded plate is subjected to uniform biaxial tension as shown in Fig. P8.26.
Calculate the maximum stress
σ
for two cases:
(a) The weld has an allowable shear stress of 25 MPa.
(b) The weld has an allowable normal stress of 60 MPa.
SOLUTION
o
xy 600 ==
θτ
(a) '' 40
25 sin120
2o
xy
σ
τ
−
=− =− MPa7.97
=
σ
(b) '40 40
60 cos120
22 o
x
σ
σ
σ
+−
== + MPa120
=
σ
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