Internal Forces in Truss: Solving for AB at Point A and Point B

In summary, the conversation discusses the stability of a structure and the consideration of internal forces at point A and point B. The participants also mention the horizontal force reaction and its impact on the structure's stability. The value and usage of µ are also questioned.
  • #1
fonseh
529
2

Homework Statement


For this problem , i found that the internal force AB at point A and point B pointed in the same direction ( as shown) in my working , so , how they cancel off each other ?Since they can't cancel off each other , so they are not stable , right ? The structure is statically indeterminate ?

Homework Equations

The Attempt at a Solution


It's in the 3rd photo [/B]
 

Attachments

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  • #2
you forgot to consider the horizontal force reaction.
 
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  • #3
which
PhanthomJay said:
you forgot to consider the horizontal force reaction.
one ? which part ? Can you point out ?
 
  • #4
see your first attachment , bottom of page, sum of forces in x direction = 0.
 
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  • #5
One more question here , how to get the value of µ ? It's not stated in my textbook what is it ... And what is the usage of µ ?
 

1. What are internal forces in a truss?

Internal forces in a truss are the forces that act within the individual members of the truss structure. These forces include tension, compression, and shear, and are responsible for maintaining the stability and strength of the truss.

2. How do internal forces in a truss affect the overall structure?

Internal forces in a truss play a crucial role in determining the overall strength and stability of the structure. The magnitude and direction of these forces can affect the load-bearing capacity and overall structural integrity of the truss.

3. How are internal forces calculated in a truss?

Internal forces in a truss can be calculated using the method of joints or method of sections. These methods involve setting up equations and solving for the unknown internal forces using the known external forces and geometry of the truss.

4. What are some common types of internal forces in a truss?

Some common types of internal forces in a truss include axial forces, which are either tension or compression forces along the length of the member, and shear forces, which act perpendicular to the length of the member.

5. How can the distribution of internal forces in a truss be optimized?

The distribution of internal forces in a truss can be optimized by carefully designing the geometry and member sizes of the truss. By balancing the forces and ensuring that no individual member is under excessive stress, the overall strength and stability of the truss can be maximized.

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