Shear and bending moment diagram problem

AI Thread Summary
The discussion revolves around a problem involving shear and bending moment diagrams, specifically questioning the validity of a point load at Support B and its implications for calculating reaction forces Va and Vb. The original poster is unsure if Vb can be set to -15 kN. Responses clarify that a point load can exist at Support B, but it does not equal 15 kN; instead, it contributes to the overall reaction forces. To confirm the calculations, it's recommended to take moments about a point not used in the initial analysis. The key takeaway is that understanding the role of point loads at supports is crucial for accurately determining reaction forces in structural analysis.
futureengineer
Messages
2
Reaction score
0

Homework Statement


I have attached a diagram


Homework Equations


14 + Va -32 + Vb -15=0??
or Vb=-15?

The Attempt at a Solution


The reason why I cannot attempt this problem is that I'm not sure whether it is valid that there can be a point load at Support B or whether they are implying that Vb=-15kN.

After I get Va and Vb I know what to do :)

This is the only issue I need to clarify.

Cheers
 
Physics news on Phys.org
-Diagram

OOPS I forgot to attach diagram. Cheers
 

Attachments

  • shearandbending.JPG
    shearandbending.JPG
    13.3 KB · Views: 519
futureengineer said:
OOPS I forgot to attach diagram. Cheers

You can have a point support load at B, but it's not equal to 15.

Chet
 
Yes you can have a point load over the reaction point. It just adds its value to that obtained from the other loads. In every case of calculating reactions, you should check it, for example by taking moments about a point not used in the original analysis. In that case you do not need help in answering the question.
 

Similar threads

Engineering Distance is a problem -- find shear force and bending moment diagram
Replies
2
Views
2K
Loader Boom maximum bending moment
Replies
2
Views
2K
Bending Moment for Bending Diagram
Replies
4
Views
2K
How Do I Draw This Shear and Moment Diagram?
Replies
11
Views
672
Shear force and bending moment
Replies
16
Views
4K
Shear force diagram and bending moment diagram
Replies
10
Views
3K
Graph of bending moment doesn't return to 0
Replies
15
Views
10K
Engineering Calculate shear force and bending moments with a UDL and a point load
Replies
2
Views
4K
Engineering Statics project involving shear & moment diagram of a control arm
Replies
3
Views
2K
Shape of bending moment diagram
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top