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Results tagged with structural-analysis
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user 1832
Structural analysis is the determination of the effects of loads on physical structures and their components. Structures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, vehicles, furniture, soil strata, prostheses and biological tissue.
1
vote
Someone please explain how to get the FAx and FEx because both support are pin.. I only got ...
As always, let's start with the global equilibrium equations:
$$\begin{align}
\sum F_x &= A_x + E_x = 0 \\
\therefore A_x &= -E_x \\
\sum F_y &= A_y + E_y - 3\times40 = 0 \\
\therefore A_y &= 120 - E …
- 13.1k
-1
votes
Which would be the most rigid?
It depends on the specific dimensions of the different parts.
@kamran's answer has the correct stiffness equation of $\dfrac{k\cdot EI}{\ell^3}$ (where $k$ depends on the loading and boundary conditi …
- 13.1k
4
votes
Why the design of continuous beam is always more economical than beam with supports?
The reality is a bit more complicated, and depends greatly on the materials being used.
Let's take the following structure as our example, where the middle support may or may not be hinged (creating …
- 13.1k
3
votes
Accepted
Structural Analysis of a Space Frame
You state in a comment beneath @Jodes' answer that since the structure is welded, that the joint can be considered fixed. The veracity of that claim is somewhat arguable (especially if done "artisanal …
- 13.1k
0
votes
Bending moment calculation
It depends on how you choose to interpret those images.
When doing simple models and especially when one's at an early stage in their education, the answer is that the three are equivalent.
The reason …
- 13.1k
2
votes
absolute max shear and moment
You can always find the bending moment at a given point by calculating the moment generated by all the forces to one side of the point. So, you can calculate it as $M = A_yD_A + 2D_2$ (left section) O …
- 13.1k
1
vote
Accepted
cut section method
As noted in the comments to your question, you forgot to include the moment due to the internal force in BE.
- 13.1k
1
vote
Finding the displacement in a truss using energy method Question
You're asking about the virtual case which only has the 1 kip load, so that's what I'll answer.
Let's start at node A. It has beams AB and AE. Only AE is capable of supporting the vertical load and w …
- 13.1k
6
votes
Can I reduce the column moment due to beam, by setting the beam end to pin?
As @pauloz1890 has already stated in his answer, if you add a hinge to a beam-column connection, you will eliminate the bending moment on your column (assuming no horizontal loads are applied).
That …
- 13.1k
1
vote
How to distinguish primary and secondary beam in FEM formulation?
Your description of what primary and secondary beams do is dramatically different to the definition given in the link you present (which is itself correct).
To quote the answer in your link:
Primary …
- 13.1k
3
votes
Accepted
Beams in Bending: Bending stress / strain distrution
Before discussing any such matters, we must define our internal force sign conventions. It is common to define them thusly:
So, tension is positive, compression is negative. Shear forces are positi …
- 13.1k
2
votes
shear force in influence line of beam
As @alephzero mentioned, you are misunderstanding how influence lines work.
To quote Wikipedia, "an influence line graphs the variation of a function (such as the shear felt in a structure member) at …
- 13.1k
1
vote
External indeterminate vs internal indeterminate
For starters, @alephzero's comment is entirely true: there is, in real practice, no difference between them. Also, you seem to be using a garbage textbook. Do yourself a favor and throw it away. You c …
- 13.1k
1
vote
How to determine fixed end moment in beam?
If you look at the structure (ignoring the loading), it is symmetrical: two spans of equal length, with pins on the extremities and a roller in the middle. It is also a hyperstatic (or statically inde …
- 13.1k
2
votes
Accepted
Is there any need to consider loading sequence in construction stage for structure analysis?
That's because the finished structure with full loading is not the same as the finished structure as a composite of the loading of each construction phase. And the latter is the correct solution.
Thi …
- 13.1k