Determine the largest axial load p which may be safely supported by a flat steel bar consisting of two portions, both 10 mm thick and respectively 40 and 60 mm wide, connected by fillets of radius r = 10 mm.
assume the material is brittle(%el < 5%), has an ultimate strength of 246 mpa, and a factor of safety of 1.1 is required.

55.908 KN

Explanation:

The ratio D/d=60/40=1.5

The ratio r/d=10/40=0.25

From the curve attached as missing part of the question and using the above two ratios we get concentration factor, k=1.6

Therefore,

Since factor of safety, FS is given by

Allowable strength=

Substituting 223.63 Mpa for then for d=40 the stress is given by

Also, hence

P=55.908 KN

1

explanation:

answer:

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