1. Engineering
  2. Mechanical Engineering
  3. problem 5...

Question: problem 5...

Question details

A cylindrical bar is % in diameter and 7 inches long. does not neck) until it has a diameter of 16. 1. It is stretched under tension (and a. How long (inches) is it after stretching? b, what is the elongation (%)? c. Which of the aluminum alloys listed in Mechanical Properties table in the textbook front cover will be able to accommodate that stretching? Which aluminum alloys will not? Neglecting any strain-hardening or strain-rate effects (and assuming all the alloys can be stretched), how much force (both lbs. and tons) is necessary to perform the stretching for all the aluminum alloys and for all the carbon steel alloys listed in the Mechanical Properties table in the textbook front cover for stretching a % diameter bar? Make a table of this form: d. e. Alloy Force (Ibs.) Force (T 1100-0 1100-H14 (Hint: Force to deform is yield strength multiplied by area.) A sheet of 1020 Q&T steel (also see front cover of textbook) has a length of four feet. (inches) must it be stretched past four feet length in order to yield it to remove the residual stresses? (Hint: What strain is necessary to get past the yield stress?) Rewrite textbook equation E2.32 in terms of psi. A large piece of annealed 4340 is subject to plane stress in which one stress is 200 MPa in compression. In order to achieve yielding (using the textbook inside front cover information) what must the tensile stress (MPa) be in the other plane direction. 2. Ho 3. 4. Assuming the maximum shear-stress-theory? b. a. Assuming the distortion-energy theory? For problem #1 above, the original bar is 20°С. 5. what temperature (C) is the bar after stretching if it is assumed that no heat is lost to the environment if the bar is a. 5052-H32 b. annealed 1040


Problem 5

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution