Problem #1 (30 points): A hollow cylinder made of copper has an outer diameter of 200 mm, an inner diameter of 50 mm and

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Problem 1 30 Points A Hollow Cylinder Made Of Copper Has An Outer Diameter Of 200 Mm An Inner Diameter Of 50 Mm And 1 (25.1 KiB) Viewed 25 times

Problem #1 (30 points): A hollow cylinder made of copper has an outer diameter of 200 mm, an inner diameter of 50 mm and a height of 100 mm. The inner side of the hollow cylinder is filled with steel cylinder Under compression force P the hollow cylinder is compressed. The strength coefficient for the outer copper (K) is 315 Mpa and the strain hardening exponent is 0.54. The strength coefficient for the inner steel (K) is 500 Mpa and the strain hardening exponent is 0.4., what is the maximum compression amount with the assumption to avoid necking? Under what force does the necking happen for the structure?