Determine the elongation of the square hollow bar when it is subjected to the axial
Chapter 3, Problem 3-16(choose chapter or problem)
Determine the elongation of the square hollow bar when it is subjected to the axial force P = 100 kN. If this axial force is increased to P = 360 kN and released, find the permanent elongation of the bar. The bar is made of a metal alloy having a stress–strain diagram which can be approximated as shown.
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