Problem 11. The distributed loading is supported by the three suspender bars. AB and ED are made of aluminum, and CD is made of steel. If each bar has a cross-sectional area of
450mm^(2)
, determine the maximum intensity
w
of the distributed loading so that an allowable stress of
(\sigma _(allow ))_(st )=235
MPa in the steel and
(\sigma _(allow ))_(a)=100MPa
in the aluminum is not exceeded.
E_(st)=200GPa,E_(al)=70
GPa. Assume ACE is rigid

Question

Problem 11. The distributed loading is supported by the three suspender bars. AB and ED are made of aluminum, and CD is made of steel. If each bar has a cross-sectional area of

450mm^(2)

, determine the maximum intensity

w

of the distributed loading so that an allowable stress of

(\sigma _(allow ))_(st )=235

MPa in the steel and

(\sigma _(allow ))_(a)=100MPa

in the aluminum is not exceeded.

E_(st)=200GPa,E_(al)=70

GPa. Assume ACE is rigid

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