Why is the 400Nm straight line drawn from the moment point in moment diagrams?

  • Thread starter Thread starter chetzread
  • Start date Start date
  • Tags Tags
    Diagram Moment
Click For Summary
SUMMARY

The discussion centers on the representation of a 400Nm moment in moment diagrams, specifically questioning why it is depicted as a straight line from the moment point rather than extending along the entire length of the beam. The consensus is that the moment acts locally, affecting only the region from point A to 2 meters away from A, rather than uniformly across the beam. This localized effect is crucial for maintaining equilibrium, as moments must be balanced at the supports or ends of the beam.

PREREQUISITES
  • Understanding of moment diagrams in structural analysis
  • Knowledge of beam equilibrium principles
  • Familiarity with the concept of localized loads and their effects
  • Basic grasp of static equilibrium conditions in mechanics
NEXT STEPS
  • Study the principles of static equilibrium in beams
  • Learn how to construct moment diagrams for various loading conditions
  • Explore the effects of localized loads on beam behavior
  • Investigate the role of supports and constraints in moment distribution
USEFUL FOR

Structural engineers, civil engineering students, and anyone involved in analyzing beam behavior under various loading conditions will benefit from this discussion.

chetzread
Messages
798
Reaction score
1

Homework Statement


for the moment diagram, why the 400Nm straight line is drawn from the point of moment to a only?
cnkrDOP.png

OHYU4Dr.png

Homework Equations

The Attempt at a Solution


Is it wrong? I think it should be drawn throughout the entire length of beam? since moment can act at anywhere on the beam...[/B]
 
Physics news on Phys.org
or the moment 400Nm will only causes the region from A to 2m away from A to break ? So , in the moment area diagram , it's drawn from A and 2m away from A ?
 
https://www.physicsforums.com/threads/direction-of-moment.878803/#post-5520313

In the previous thread , i was told that to keep the beam in equilibrium, the moment has to be applied at the another end (wall)in opposite direction
But, in this question, i have 2 ends, namely A and B, but both point doesn't restrict moment, am i right?
In the previous therad, it's wall, so it can restrict moment...But , how about this case?@SteamKing
 
deleted
 

Similar threads

Replies
38
Views
4K
Replies
5
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 18 ·
Replies
18
Views
4K
  • · Replies 10 ·
Replies
10
Views
3K