Find out maximum stress and elongation of the bar, Mechanical Engineering

Find out maximum stress and elongation of the bar:

A rectangular bar having uniform cross-section of 4 cm × 2.5 cm and of length 2 m is hanging vertically from rigid support. lt is subjected to the axial tensile loading of 10KN. Take the density of steel as 7850 kg/m3. And E = 200 GN/m2. Find out maximum stress and elongation of the bar.              

Sol.: Data, cross sectional area A = 4 cm. × 2.Scm.

length   L = 2m

axial load

P = I0KN

Density of steel     σ= 7850 Kg/m3

E = 200 GN/m2

As                        δL = PL/AE +   L2/2E

= (10 × 103 × 2)/(4 × 2.5 × 10-4  × 200 × 109) + (7850 × 9.81 × 22)/(2 × 200 × 109)

2445_Find out maximum stress and elongation of the bar.png

10 kN

= 0.0001 m                                                             

= 0.1 mm stress
( σ max) = E × strain

= 200 × 109  ×  δ L/L =200 × 109  × (0.0001/2) = 10.08 mpa  .......ANS 

  
Posted Date: 10/23/2012 1:29:14 AM | Location : United States







Related Discussions:- Find out maximum stress and elongation of the bar, Assignment Help, Ask Question on Find out maximum stress and elongation of the bar, Get Answer, Expert's Help, Find out maximum stress and elongation of the bar Discussions

Write discussion on Find out maximum stress and elongation of the bar
Your posts are moderated
Related Questions
(a) Show that two statements of Second Law of thermodynamics are equivalent to each other. (b) A house that was heated by electric resistance heater consumed 1200 KWh of electri

Q.What is Metal working processes? Metal working processes are processes used to produce wrought products. These product include angles, channels, I-beams, round, squar

Record Keeping Systematic process for collecting information on employees health, working conditions and any accident requirement be established in a company. Various differe

Tachometer: This is used to measure the speed (revolutions) of an engine in revolutions per minute (RPM). This is shown in Figure. Figure : Tachometer

Q. Design Gas Compressors? As gas compressors are often high investment equipment, it makes sense to locate these well away from other equipment to minimize potential fire dama

The Cu-Sb system contains 2 eutectics, 1 eutectoid, 1 peritectic and 1 peritectoid. Mark them all on the figure, write down the temperature and composition of each point, and ident

Dust Collector:             Dust collector system is to collect the blast burrs or waste particle created during the blasting process. During the blasting process, this dust co

Motion of two bodies - Smooth surface and smooth pulley: THE HORIZONTAL SURFACE IS SMOOTH AND STRING IS PASSING OVER SMOOTH PULLEY: Figure shows two weights W 1 and W 2 c

Compute the utilization of peak capacity: If the fabrication department of the engine manufacturer, operated under ideal conditions, produces 100 engines per day. Management b

Limitations of Carnot vapour cycle: This equation dignifies that the wider the temperature range, the more efficient is the cycle. ( a )T 3 : In practice T 3 cannot be r