For the loaded compound truss shown in figure, find the axial force in bars (AC), and (AF). Use the method of section and/or joints. (It is possible to use a section passing through the members AF, CE, and BD).

For the loaded compound truss shown in figure, find the axial force in bars (AC), and (AF). Use the method of section and/or joints. (It is possible to use a section passing through the members AF, CE, and BD).

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter4: Compression Members

Section: Chapter Questions

Problem 4.7.11P

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Concept explainers

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.

Question

For the loaded compound truss shown in figure, find the axial force in bars (AC), and (AF). Use the
method of section and/or joints. (It is possible to use a section passing through the members AF, CE, and
BD).
A
|
30kN
8m
D
1.5m 1.5m
B
F
40KN
8m
T
6m
3m
3m

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Given data

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determination of support reactions

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Determination of truss geometry

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Determination of member forces in AF, CE & BD

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Determination of member forces in AC & AF

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