Example: 4 A prismatic steel bar having cross sectional area of A=300 mm? is subjected to axial load as shown in figure . Find the net increase & in the length of the bar. Assume E = 2 x 10 5 MPa.( Ans ô = -0.17mm) %3D 20 kN 15 kN 15 kN В A 2 m m

Example: 4 A prismatic steel bar having cross sectional area of A=300 mm? is subjected to axial load as shown in figure . Find the net increase & in the length of the bar. Assume E = 2 x 10 5 MPa.( Ans ô = -0.17mm) %3D 20 kN 15 kN 15 kN В A 2 m m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Example: 4 A prismatic steel bar having cross sectional
area of A=300 mm? is subjected to axial load as shown in
figure . Find the net increase & in the length of the bar.
Assume E = 2 x 10 5 MPa.( Ans ô = -0.17mm)
%3D
20 kN
15 kN
15 kN
В
A
2 m
1m,
m 1m
15
A
15
0 – B
20
C
20
Solution:
8 = 20000*1000/(300*2x10 5)-15000*2000/(300*2 x10 5)
= 0.33 - 0.5 = -0.17 mm (i.e.contraction)

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