A copper bar with rectangular cross-section is hung from a rigid pin that is supported by two steel posts as shown in Figure Q3. The copper bar has an initial length of L4=2.0 m, a cross-sectional area of 4800 mm², and a modulus of elasticity E, = 120 GPa. Each steel post has a height of L, = 0.5 m, a cross-sectional area of 4500 mm², and a modulus of elasticity E, = 200 GPa. a) Determine the downward displacement ốc of the lower end of the copper bar when it is subjected to a load P= 200 kN. b) By assuming linear elastic material behaviour, what is the maximum permissible load Pmur if the displacement ő, is limited to 1.0 mm? c) Determine the downward displacement ốe when P = 200 kN and the temperatures for the steel post and the copper bar are increased by ATseel = 15 °C and ATepper = 0 °C, respectively. Given linear coefficient of thermal expansion: asel = 12 x 104/C and acopper= 18 x 10*PC).

A copper bar with rectangular cross-section is hung from a rigid pin that is supported by two steel posts as shown in Figure Q3. The copper bar has an initial length of L4=2.0 m, a cross-sectional area of 4800 mm², and a modulus of elasticity E, = 120 GPa. Each steel post has a height of L, = 0.5 m, a cross-sectional area of 4500 mm², and a modulus of elasticity E, = 200 GPa. a) Determine the downward displacement ốc of the lower end of the copper bar when it is subjected to a load P= 200 kN. b) By assuming linear elastic material behaviour, what is the maximum permissible load Pmur if the displacement ő, is limited to 1.0 mm? c) Determine the downward displacement ốe when P = 200 kN and the temperatures for the steel post and the copper bar are increased by ATseel = 15 °C and ATepper = 0 °C, respectively. Given linear coefficient of thermal expansion: asel = 12 x 104/C and acopper= 18 x 10*PC).

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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Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

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