2.84 The rigid bar of negligible weight is supported as shown in the figure. If W = 80 kN, compute the temperature change of the assembly that will cause a ten- sile stress of 50 MPa in the steel rod. Use the following data: A (mm?) a (f°C) E (GPa) Steel rod 300 11.7 x 10-6 200 Bronze rod 1400 18.9 x 10-6 83

2.84 The rigid bar of negligible weight is supported as shown in the figure. If W = 80 kN, compute the temperature change of the assembly that will cause a ten- sile stress of 50 MPa in the steel rod. Use the following data: A (mm?) a (f°C) E (GPa) Steel rod 300 11.7 x 10-6 200 Bronze rod 1400 18.9 x 10-6 83

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

Bronze 3 m
Steel 1.5 m
→| 1.0 m
2.5 m
1.5 m -
W
FIG. P2.84, P2.85

2.84 The rigid bar of negligible weight is supported as shown in the figure. If
W = 80 kN, compute the temperature change of the assembly that will cause a ten-
sile stress of 50 MPa in the steel rod. Use the following data:
A (mm²)
a (1°C)
E (GPa)
Steel rod
300
11.7 x 10-6
200
Bronze rod
1400
18.9 x 10-6
83

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Aluminum A = 400 mm Bronze A = 200 mm Problem 2: An aluminum rod is rigidly attached between a steel rod and a bronze rod as shown in Fig. Axial loads are applied at the positions indicated. Find the maximum value of P that will not exceed a stress in steel of 140 MPa, in aluminum of 90 MPa, or in bronze of 100 MPa. Steel A = 500 mm 2P 4P 2.5 m 2.0 m 1.5 m Show all