The beam shown is made of a nylon for which the allowable stress is 24 MPa in tension and 30 MPa in compression. Determine the largest couple M that can be applied to the beam. Solve Prob. 4.16, assuming that d = 40 mm. For Problem 4.17, flip the T cross section upside down. Do not reverse the way thecoupleis applied.(a) Determinethe largest coupleMthat can be applied. (b) Determine the largest compressive stress. (c) Determine the largesttensile stress.
The beam shown is made of a nylon for which the allowable stress
is 24 MPa in tension and 30 MPa in compression. Determine the
largest couple M that can be applied to the beam. Solve Prob. 4.16, assuming that d = 40 mm. For Problem 4.17, flip the T cross section upside down. Do not reverse the way thecoupleis applied.(a) Determinethe largest coupleMthat can be applied. (b) Determine the largest compressive stress. (c) Determine the largesttensile stress. (d)Replace this beam by another that isrectangularwith the same total area,supportcanhave thesame maximum coupleM.Make acentrally locatedcircular extrusion of diameter:(d1)Determinethe diameter ofthis circle.(d2)Determinethe lengthsof the sidesof thisrectangle
Solution:
Given Data:
To Find:
(a) Largest couple M that can be applied to the beam.
(b) The largest compressive stress.
(c) The largest tensile stress.
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