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A 6" long bar with a modulus of elasticity of 30 x 106 psi is loaded...

A 6" long bar with a modulus of elasticity of 30 x 106 psi is loaded beyond its yield strength to a total strain (elastic plus plastic) of 0.201. The load is removed from the bar and the length now measures 7.18 inches. Answer the following:

(1) What was the length of the bar prior to unloading?

(2) What is the plastic strain in the bar?

(3) What was the elastic strain in the bar prior to unloading?

(4) What would the new (strain hardened) yield tensile strength be for the bar?

Engineering   Civil-Engineering   
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