How Is Displacement Calculated in a Compound Bar Under Load?

[Dustybin]

Homework Statement

A steel bar and a brass bar, both of 36 mm diameter, are joined at point C to form a compound bar. Neglect the weight of the bars. Determine the displacement (in mm) of point D due to the loading.

The forces are PB=54 kN and PD=117 kN at points B and D respectively.

Give your answer to 2 decimal places in mm.

Homework Equations

PL/AE

The Attempt at a Solution

I have tried for a lot of times. But i think my mistake is on the force use on each segment.

 

[berkeman]

Homework Statement

A steel bar and a brass bar, both of 36 mm diameter, are joined at point C to form a compound bar. Neglect the weight of the bars. Determine the displacement (in mm) of point D due to the loading.

The forces are PB=54 kN and PD=117 kN at points B and D respectively.

Give your answer to 2 decimal places in mm.

Homework Equations

PL/AE

The Attempt at a Solution

I have tried for a lot of times. But i think my mistake is on the force use on each segment.

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