3.Shaft A, shown below, is made from AISI 1020 hot-rolled steel, is welded to a fixed support, and is subjected to loading by equal and opposite forces F via shaft B. A theoretical stress-concentration factor Kts of 1.6 is induced by the 1/8" fillet. The length of shaft A from the fixed support to the connection at shaft B is 2 ft. The load F cycles from 150 to 500 lbf. (a) For shaft A, the factor of safety for infinite life using the Modified Goodman fatigue failure criterion is ( _) (b) For shaft A, the factor of safety for infinite life using the Gerber fatigue failure criterion is ( - in 8 fillet --in dia Shaft A F 1 in 1 in Shaft B

3.Shaft A, shown below, is made from AISI 1020 hot-rolled steel, is welded to a fixed support, and is subjected to loading by equal and opposite forces F via shaft B. A theoretical stress-concentration factor Kts of 1.6 is induced by the 1/8" fillet. The length of shaft A from the fixed support to the connection at shaft B is 2 ft. The load F cycles from 150 to 500 lbf. (a) For shaft A, the factor of safety for infinite life using the Modified Goodman fatigue failure criterion is ( _) (b) For shaft A, the factor of safety for infinite life using the Gerber fatigue failure criterion is ( - in 8 fillet --in dia Shaft A F 1 in 1 in Shaft B

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.2.4P: Repeat Problem 11.2-3 assuming that R= 10 kN · m/rad and L = 2 m.

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