GURU NANAK INSTITUTE OF TECHNOLOGY
Dahegaon, Kalmeshwar Road, Nagpur
Department of Mechanical Engineering
SESSION 2021-2022
Assignment No : 1
Subject : Mechanics of Materials
Sem : 4th Sem
1) Explain in brief the stress strain curve for a ductile material
with labelled diagram
2) Define the term principal strain and principal stress.
3) Explain Young’s modulus and modulus of rigidity, Poisson’s
ratio and bulk modulus.
4) Explain the terms Young’s modulus and modulus of rigidity,
Poisson’s ratio and bulk modulus
5) A circular steel bar is subjected to various forces as shown in
Fig. 1. a) Determine the total elongation in the bar.
E = 2 X 10 5 N mm2
.