1.21 An elastoplastic material with strain hardening has the stress-strain relationshown in Figure P1.21. The yield point corresponds to 600 MPa stress and0.003 m/m strain.1000800* 6004002000.020.040.060.08Strain, m/mFIGURE P1.21a. If a bar made of this material is subjected to a stress of 650 MPa and thenreleased, what is the permanent strain?b. What is the percent increase in yield strength that is gained by the strainhardening shown in part (a)?c. After strain hardening, if the material is subjected to a stress of 625 MPa,how much strain is obtained? Is this strain elastic, permanent, or a combi-nation of both?Stress, MPa

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Answered: 1.21 An elastoplastic material with…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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