Optimized "4 Zero Force Members: Check If You Have It Right

In summary, the truss in question is supposed to have 4 zero force members. The left side has 2 members, and the colinear ones are the 2 vertical members, making the horizontal member 0. On the right side, the join has 2 members with no external load, making both members 0. However, the middle part is incorrect as there are only 3 0-force members. The logic for the left side still applies, but it's important to note that any horizontal load added will create a force in that member since the right support is locked in place. The original author is looking for confirmation or guidance on this matter.
  • #1
dbag123
76
3
Homework Statement
Determine the zero force members
Relevant Equations
-
243943
This truss is supposed to have 4 zero force members and i have picked the following. Does it look right?
Left side: Join has 2 members of which the colinear are the 2 vertical members and so the horizontal must be 0
Right side: Join has 2 members with no external load, therefore both are 0
I am unsure about the middle part and would like some confirmation or a nudge in the right direction. Thanks
Correction: There is only 3 0-force members and the one in the middle is wrong.
 
Last edited:
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  • #2
dbag123 said:
Left side: Join has 2 members of which the colinear are the 2 vertical members and so the horizontal must be 0
This is true in this specific case because there are no horizontal loads. However, note that there will be a force in that member as soon as any horizontal load is introduced (the right support is locked in place and can therefore also support horizontal forces).
 

FAQ: Optimized "4 Zero Force Members: Check If You Have It Right

1. What are zero force members in a structure?

Zero force members are structural members that do not experience any force or stress when the structure is loaded. They are typically found in truss structures and are important for maintaining the stability and integrity of the structure.

2. How do you identify zero force members?

To identify zero force members, you can use the method of joints or the method of sections. In the method of joints, you look for members that only have two non-collinear forces acting on them. In the method of sections, you look for members that are cut by a section and have no external load or reaction acting on them.

3. Why is it important to check for zero force members in a structure?

Checking for zero force members is important because they can significantly affect the overall stability and strength of a structure. If these members are not accounted for, it can lead to incorrect analysis and potential failure of the structure.

4. What is the process for optimizing 4 zero force members in a structure?

The process for optimizing 4 zero force members involves identifying the zero force members, removing them from the structure, and then analyzing the remaining structure to determine if it is still stable and can support the intended load. If the structure is not stable, additional members may need to be added to ensure its stability.

5. Can a structure have more than 4 zero force members?

Yes, a structure can have more than 4 zero force members. The number of zero force members in a structure depends on the complexity and design of the structure. It is important to check for and account for all zero force members in order to accurately analyze the structure.

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