A double-threaded 30-mm power screw is 30 mm in diameter with a pitch of 6 mm. The coefficients of friction are 0.05 for the collar and 0.08 for the threads. The frictional diameter of the collar is 40 mm. if TR=18 N.m: 1- Find the A vertical load on the screw, the torque used to lower the load and screw efficiency. 2- Compute all the stresses on the screw body that will cause by the load.

A double-threaded 30-mm power screw is 30 mm in diameter with a pitch of 6 mm. The coefficients of friction are 0.05 for the collar and 0.08 for the threads. The frictional diameter of the collar is 40 mm. if TR=18 N.m: 1- Find the A vertical load on the screw, the torque used to lower the load and screw efficiency. 2- Compute all the stresses on the screw body that will cause by the load.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.3.5P: An inflatable structure used by a traveling circus has the shape of a half-circular cylinder with...

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