Intro Level Question -- Truss Analysis

In summary, the last slide in the provided images shows that F_DB is equal to F_DA. The given equations and attempt at a solution indicate that the horizontal force in member AB is dependent on the 2000lb and 1000lb vertical forces at A and B. It is clarified that these vertical loads do not have any components in the horizontal direction and therefore do not directly influence the horizontal force in member AB. Instead, the 2000lb load is distributed along AD and the 1000lb load is distributed along BD and BE.
  • #1
DiamondV
103
0

Homework Statement


http://puu.sh/lKP9T/b6aea483b5.png
http://puu.sh/lKPdk/a99777477e.png
http://puu.sh/lKPkj/a9f199e959.jpg

My question is the last picture/slide which says F_DB = F_DA how? why is that?

Homework Equations


F_DB = F_DA ?

The Attempt at a Solution

 
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  • #2
Since the reaction Cx = 0, what does this tell you about the horizontal force in member AB?
 
  • #3
SteamKing said:
Since the reaction Cx = 0, what does this tell you about the horizontal force in member AB?
Its going to be completely dependent on the 2000lb and 1000lb forces at A and B.
 
  • #4
DiamondV said:
Its going to be completely dependent on the 2000lb and 1000lb forces at A and B.
Those are vertical loads. How can they influence what happens in the horizontal direction?
 
  • #5
SteamKing said:
Those are vertical loads. How can they influence what happens in the horizontal direction?
I was thinking of it, that they won't have any components in x. Ah. So the entire 2000lb load is distributed along AD. And the entire 1000lb load is distributed along BD and BE.
 

Related to Intro Level Question -- Truss Analysis

1. What is "Intro Level Question -- Truss Analysis"?

"Intro Level Question -- Truss Analysis" is a common exercise or problem given in introductory engineering or physics courses. It involves analyzing the forces acting on a truss structure and determining the internal forces at each joint.

2. Why is "Intro Level Question -- Truss Analysis" important?

Truss analysis is an essential skill for engineers and scientists who work with structures. It helps us understand how different forces act on a structure and how to design structures that can withstand these forces.

3. What are the key steps in solving "Intro Level Question -- Truss Analysis"?

The key steps in solving "Intro Level Question -- Truss Analysis" are:

  1. Identifying all external and internal forces acting on the truss.
  2. Breaking down the forces into their components.
  3. Applying the principles of equilibrium to each joint and solving for the unknown forces.
  4. Checking the solution for consistency and accuracy.

4. What are the most common mistakes made in solving "Intro Level Question -- Truss Analysis"?

One of the most common mistakes in solving "Intro Level Question -- Truss Analysis" is not accurately identifying all of the forces acting on the truss. Another common mistake is not considering the direction and magnitude of the forces correctly.

5. How can I improve my skills in solving "Intro Level Question -- Truss Analysis"?

The best way to improve your skills in solving "Intro Level Question -- Truss Analysis" is to practice regularly. Start with simpler truss structures and gradually increase the complexity. Additionally, make sure to fully understand the principles of equilibrium and how to apply them to truss analysis. Seeking help from a tutor or instructor can also be beneficial.

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