Beam and Load: Understanding Uniformly Distributed Loads and Moments

  • Thread starter Thread starter dahoa
  • Start date Start date
  • Tags Tags
    Beam Load
Click For Summary
The discussion centers on the relationship between bending moments and the characteristics of beams under uniformly distributed loads. It is established that while the bending moment formula (w * ln / 8) is independent of the beam's thickness, the beam's ability to withstand loads varies with its cross-sectional dimensions. The conversation clarifies that bending moments are equal and opposite to applied moments, relying solely on external loads rather than beam properties. Additionally, the derivation of the moment formula is explained, emphasizing the role of load distribution and distance from the axis. Overall, the principles of bending moments and their calculations are crucial for understanding beam behavior under load.
  • #61
dahoa said:
a uniform beam is one with identical rebars ratio and resistances in the whole length of the beam?
Yes.
 
Engineering news on Phys.org
  • #62
haruspex said:
Yes.

By the way.. when the ends are moment connected.. for example, the column and beam can transfer moments to each other.. so the moment in the column is equal to the moment in the beam at edge connections and rotation occurs at the joint... do you consider it fixed?

Some use definition of fixed where there is no moment rotation. If the above is not fixed.. then what kind of real or actual connections would make it fixed? How can you make column-beam fixed with no moment rotations?

And when we described pinned.. do you mean something that is just put on top of the support?
 

Similar threads

How does counter rotation control work for a tail sitter drone?
  • · Replies 15 ·
Replies
15
Views
2K
What is the best beam design for my aluminum tandem axle trailer?
  • · Replies 33 ·
2
Replies
33
Views
5K
Simply supported beam with a spring support in the middle - deflection
  • · Replies 6 ·
Replies
6
Views
4K
Beam width: connected vs dispersed
  • · Replies 5 ·
Replies
5
Views
2K
Need a Hand Calculating the Maximum Load on a Structure
  • · Replies 5 ·
Replies
5
Views
6K
Calculating Deflections of I-Beams with Varying Loads and Supports
  • · Replies 5 ·
Replies
5
Views
2K
Irregular free-free beam, non-numerical solutions
  • · Replies 1 ·
Replies
1
Views
1K
What is the best way to determine the distributed load for a cargo shelf?
  • · Replies 3 ·
Replies
3
Views
4K
Box Beam stress problem with welding
  • · Replies 16 ·
Replies
16
Views
3K
Understanding Maximum Moment for Moving Loads: Strength of Materials Reviewer
  • · Replies 7 ·
Replies
7
Views
2K