MECHANICS OF SOLIDS

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30 Οκτ 2013 (πριν από 3 χρόνια και 11 μήνες)

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MECHANICS OF SOLIDS

Assignment
1

Unit 1:

1.


A tensile test was conducted on a mild steel bar. The following data was

obtained from the test:


(i) Diameter of the steel bar

= 3 cm


(ii) Gauge length of the bar

= 20cm


(iii) Load at elastic limit

= 250 kN


(iv) Extension at a load of 150 kN = 0.21 mm


(v) Maximum load


= 380 kN


(vi) Total extension

= 60 mm


(vii) Diameter of rod at failure = 2.25 cm


Determine:






(1) The Young’s modulus





(2) The stress at elastic limit




(3) The percentage of elong
ation





(4) The percentage decrease in area.


2.

A)
Derive relation between three elastic moduli
?

B)
Define Factor of safety, Poisson's ratio and strain energy
?

Unit 2

1.

Explain the procedure to draw a SFD & BMD for a point load,
UDL,UVL.

2.

Explain the procedure

to draw a SFD & BMD on a cantilever beam
,simply supported beam and over hanging beam.

Unit 3

1.

Derive bending equation M/I=f/y=E/R.





MECHANICS OF SOLIDS

Assignment 2

Unit 3

1.

Draw and explain shear stress distibution across I and T sections.

Unit 4

1.

Consid
er any example and explain forces determination of perfect stresses
by method of joints and method of sections.

2.

Determine slope and deflection of cantilever beam using Macaulay’s
method.

Unit 5

1.

Derive lame’s equation for a thick cylinder.

2.

Give your view o
n riveted boiler shells and thin sperical shells and write
few practical application.