Shape of bending moment diagram

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SUMMARY

The discussion focuses on the accurate construction of bending moment and shear force diagrams in structural analysis. A participant received feedback indicating that their shear force diagram was incorrect due to a distributed load, which resulted in a non-horizontal shear line. Consequently, this error affected the bending moment diagram, which should not be mirrored as in previous examples. The conversation emphasizes the importance of correctly interpreting distributed loads to ensure accurate diagram representation.

PREREQUISITES
  • Understanding of shear force and bending moment diagrams
  • Knowledge of distributed loads in structural analysis
  • Familiarity with conventions in structural engineering diagrams
  • Basic principles of static equilibrium
NEXT STEPS
  • Study the principles of drawing shear force diagrams with distributed loads
  • Learn about the conventions for bending moment diagrams in structural analysis
  • Review examples of common mistakes in shear and moment diagrams
  • Explore software tools for visualizing bending moment and shear force diagrams
USEFUL FOR

Structural engineers, civil engineering students, and anyone involved in analyzing forces in beams and structures will benefit from this discussion.

chetzread
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Homework Statement


in this question , I'm asked to draw the bending moment diagram and shear force diagram

Homework Equations

The Attempt at a Solution


I don't have the ans for this question , can somoene check thruough my shape of graph . I'm not confident with it . [/B]
 

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Oh so close,,,,but between B and the right end, the shear diagram is wrong,,,you have a distributed load there so the shear line is not horizontal. Your moment diagram them gets messed up between B and the end because of that shear error. And by convention, moment diagram is not mirrored like last time , this is a good thing
 
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PhanthomJay said:
Oh so close,,,,but between B and the right end, the shear diagram is wrong,,,you have a distributed load there so the shear line is not horizontal. Your moment diagram them gets messed up between B and the end because of that shear error. And by convention, moment diagram is not mirrored like last time , this is a good thing
should the diagram look like this ?
 

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I think you attached the wrong image I don't know what you did. It was almost perfect the first tine
 

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