A circular aluminum tube with a length of L-420 mm is loaded in compression by forces P (see figure) 1/3 Strain gage -L=

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A Circular Aluminum Tube With A Length Of L 420 Mm Is Loaded In Compression By Forces P See Figure 1 3 Strain Gage L 1 (17.8 KiB) Viewed 29 times

A circular aluminum tube with a length of L-420 mm is loaded in compression by forces P (see figure) 1/3 Strain gage -L=420 mm- The hollow segment of length 1/3 has outside and inside diameters of 62 mm and 37 mm, respectively. The solid segment of length 2/3 has a diameter of 62 mm. A strain gage is placed on the outside of the hollow segment of the bar to measure normal strains in the longitudinal direction. (a) If the measured strain in the hollow segment is 400 x 10, what is the straine, in the solid part? Hint. The strain in the solid segment is equal to that in the hollow segment multiplied by the ratio of the area of the hollow to that of the solid segment. (Enter the magnitude in a form) (b) What is the overall shortening of the bar (in me? (c) If the compressive stress in the bar cannot exceed 40 MPa, what is the maximum permissible value of load P? (Enter the magnitude in K.)