A force is applied to the handle 3.5 in from the screw center-line. The diameter of the handle is 0.375 in and the handle is made of 1018 cold drawn steel. The screw is a square-threaded power screw with an outside diameter of 0.75 in and 5 threads per inch.
(a) What force applied to the handle would cause the handle to yield?
(b) What clamping force would this same handle force create? You may assume
a thread friction coecient of 0.10 and a collar friction coecient of 0.08
with a mean collar diameter of 0.80 in.
(c) Compute the shear stress due to torque, axial stress due to load, and bending
stress at thread root on a section of the screw between the clamped member
and the upper portion of the \C." See text, p. 411
(d) Combine the previous three stresses as a von Mises stress and nd a factor of safety against yielding for the screw.
(e) Is this gadget self-locking? Would you want it to be?
the following is queen elizabeth’s purposes:
- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.
- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.
- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.
- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.