An elastoplastic material with strain hardening has the stress– strain relation shown in Figure aside. The modulus of elasticity is 25 x 106 Psi. , yield strength is 70 ksi, and the slope of the strain-hardening portion of the stress–strain diagram is 3 x 106 Psi. a. Calculate the strain that corresponds to a stress of 85 ksi. b. If the 85-ksi stress is removed, calculate the permanent strain.
An elastoplastic material with strain hardening has the stress– strain relation shown in Figure aside. The modulus of elasticity is 25 x 106 Psi. , yield strength is 70 ksi, and the slope of the strain-hardening portion of the stress–strain diagram is 3 x 106 Psi. a. Calculate the strain that corresponds to a stress of 85 ksi. b. If the 85-ksi stress is removed, calculate the permanent strain.
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter6: Introduction To Mechanical Properties
Section: Chapter Questions
Problem 6.2P
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An elastoplastic material with strain hardening has the stress– strain relation shown in Figure aside. The modulus of elasticity is 25 x 106 Psi. , yield strength is 70 ksi, and the slope of the strain-hardening portion of the stress–strain diagram is 3 x 106 Psi.
a. Calculate the strain that corresponds to a stress of 85 ksi.
b. If the 85-ksi stress is removed, calculate the permanent strain.
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