No. It means the beam rotates about the y-y axis, which is the weaker axis for this I-beam.chetzread said:
See above.
For someone who has a lot of questions about the bending of beams, you also seem to have a lot of opinions about what is correct and what is not.
How can the beam rotate ? It can only buckle either in x or y direction, right ? Or do you mean for y-y aixs buckling , it means the beam bend towards positive or negative x -direction?SteamKing said:
chetzread said:
i'm confused now ... The cable will prevent the beam from moving in y-y direction , right ? why the author stated the cable will prevent the beam from moving along x-axis ?SteamKing said:
No. How can it?chetzread said:
Well, take another look at the diagram. There are two cables attached to the end of the beam, one on either side. If the beam wants to move one way along the x-axis, one of the cables will be put in tension, and the opposite one will probably go slack. Same thing happens when the beam wants to move in the opposite direction along the x-axis.
@SteamKing it's stated in the second lines of notes , the cable will prevent the cables from moving along x-axis ... why is it so ? is the notes wrong ?chetzread said:
chetzread said:
SteamKing said:
chetzread said:
please refer to the left bottom part of the notes , it's stated that in y-axis the column will behave as the fixed and pinned at the top end .SteamKing said:
Yeah, but there's still no actual pin here. The column behaves in a similar fashion to one which is fixed at one end and pinned at the other. In this column, the two cables at the top of the column act to partially restrain the movement of the column.chetzread said:
so , the 'pin' will allow the column to bend about x-axis freely (act as cantilever)?SteamKing said:
What do you mean by it ? I don't really understand ... In y-y axis buckling , the column bend towards + / - x-axis and vice versa , right ?SteamKing said:
Yes, but it doesn't move from side to side, thus staying in the x-z plane. In case you are wondering, the z-axis runs along the un-buckled length of the column.chetzread said:
<br />Well, take another look at the diagram. There are two cables attached to the end of the beam, one on either side. If the beam wants to move one way along the x-axis, one of the cables will be put in tension, and the opposite one will probably go slack. Same thing happens when the beam wants to move in the opposite direction along the x-axis.
Buckling of a beam is a phenomenon in which a structural member, such as a beam, column, or strut, fails due to compressive stress. It occurs when the load applied is greater than the critical load, causing the beam to bend or buckle in a lateral direction.
The direction in which a beam will buckle depends on several factors, including the type of loading, the material properties of the beam, and the support conditions. For example, a beam may buckle sideways if it is loaded with an eccentric load, or it may buckle in the vertical direction if it is loaded with a concentrated load at the center.
If a beam buckles, it can lead to structural failure, which can be dangerous and costly. In addition, buckling can cause the beam to lose its load-bearing capacity and may result in excessive deflection or deformation of the structure.
To prevent buckling of a beam, it is important to design the beam with appropriate dimensions and support conditions to withstand the expected load. This can be achieved by using appropriate materials and cross-sectional shapes, as well as proper reinforcement and bracing techniques.
The critical buckling load of a beam can be calculated using various analytical methods, such as the Euler's formula, which takes into account the material properties, dimensions, and support conditions of the beam. Finite element analysis can also be used to determine the critical buckling load for more complex beam configurations.
