hw4emch371.pdf

# hw4emch371.pdf - HW#4-Homework for Chapters 6 Total 100...

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HW#4--Homework for Chapters 6. Total 100 points. Due on Tuesday March 6 at the beginning of the class. You must write down the equations and the detailed solving steps. 1. The following three - data points are provided for a titanium alloy for aerospace applications:   at   Pa),   at   Pa), and   at   Pa). Calculate E for this alloy (5 points). If the Poisson’s ratio for the titanium alloy in the above Problem 1 is 0.35, calculate the shear modulus G, and the shear stress necessary to produce an angular displacement of of 0.2865 o (5 points).

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2. Consider the 1040 carbon steel listed in Table 6.1. (a) A 20-mm diameter rod of this alloy is used as a structural member in an engineering design. The unstressed length of the rod is precisely 1 m. The structural load on the rod is 9 x 10 4 N in tension. What will be the length of the rod under this structural load (5 points)? (b) A design engineer is considering a structural change that will increase the tensile load on this member. What is the maximum tensile load that can be permitted without producing extensive plastic deformation of the rod (5 points)?
3. A 10-mm- diameter metal rod (E=70GPa; ν=0.33; Y.S.=145MPa) is subjected to a 6kN tensile load. Calculate the resulting rod diameter (8 points). What about 6kN compressive load (8 points)?

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