Reg No.:

00000ME201121903
Pages: 3

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Third semester B.Tech examinations (S) September 2020

Course Code: ME201
Course Name: MECHANICS OF SOLIDS (ME,MP,MA,MT,AU,PE,SF)

Max. Marks: 100 Duration: 3 Hours

b)

b)

b)

PARTA

Answer any three full questions, each carries 10 marks Marks
Explain the stress strain diagram for brittle material. (3)
A compound bar is made of central steel plate of 60mm wide and 10mm thick (൦൬
which copper plates 40mm wide by Smm thick are connected rigidly on each
side. The length of bar at normal temperature is | metre. If temperature is raised
by 80°C, determine the stresses in each metal and change in length. Take
एष = 200GPa o sreer=12x10°/°C&Ecopper= 100GPa o.copper=17x 10°/C.
ABC is a stepped bar subjected to axial pull of 40 KN.The length and diameter (6)
of the solid portion AB is 80 mm and 40mm and for the remaining hollow
section of length 120mm is having internal diameter 20 mm external diameter
40mm.Determine total strain. What will be the diameter of the bar,if it is a solid
section throughout, for the same strain. Take E=200 KN/mm’.
A steel member of uniform cross-sectional area 10001717 is subjected to axial (4)
force as shown. Calculate the force “1” required for equilibrium of the member

and the total change in length.

6kN 4 + 10 kN 9 > ۲

With proper assumptions derive torsion equation. (5)
A metallic bar 300mmx 100mm is subjected to a force of SKN,J6KN&4KN (5)
along x,y and z directions respectively.Determine change in volume of the
block.

Take E=2x10° N/mm’ and Poisson’s ratio=0.25.

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