- #1
How much force is needed to bend a fixed beam channel by 4mm at 'F'?
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SUMMARY
The discussion centers on calculating the force required to bend a fully fixed beam channel by 4mm at a specific point, denoted as 'F'. Participants emphasize the necessity of additional information, such as the beam's dimensions, material properties, and the specifics of the structural discontinuity present at mid-span. The consensus is that traditional beam formulas are inadequate due to the channel section's unique characteristics, and a numerical simulation is recommended for accurate results.
PREREQUISITES- Understanding of beam mechanics and deflection principles
- Familiarity with material properties and plastic deformation concepts
- Knowledge of numerical simulation techniques for structural analysis
- Experience with channel section beam characteristics and their implications
- Research the formulas for calculating deflection in fixed beams with discontinuities
- Learn about numerical simulation tools such as ANSYS or SolidWorks for structural analysis
- Study the effects of material properties on beam performance under load
- Explore advanced topics in beam theory, particularly for non-standard cross-sections
Structural engineers, mechanical engineers, and anyone involved in the design and analysis of fixed beam structures, particularly those using channel sections.
- #2
SteamKing
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It's not clear from the attached sketch what the dimensions of the channel are, what the length of the channel is, the location of the applied force, or if the channel is fixed at one end only or at both ends. Without additional information, advice can't be given.
- #3
Khashishi
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Also, what the material is.
- #4
mjonquiere
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Hi All,
thanks for feed back. I am after a formula to find what force (F) the beam can withstand before plastic deformation and what force (F) caused it to bend by 4 mm.
It's a fully FIXRED beam fixed both ends, the difficulty for me is that its not a normal square beam it's a channel section. attached is a better drawing but its the formulas I'm really after.
thanks for feed back. I am after a formula to find what force (F) the beam can withstand before plastic deformation and what force (F) caused it to bend by 4 mm.
It's a fully FIXRED beam fixed both ends, the difficulty for me is that its not a normal square beam it's a channel section. attached is a better drawing but its the formulas I'm really after.
Attachments
- #5
SteamKing
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It's worse than that, I'm afraid.mjonquiere said:
The beam has a structural discontinuity at mid span with that notch in both flanges. You can't apply the regular beam formulas because they are derived assuming that the beam is continuous between supports with constant section properties. You can analyze this beam to determine the deflection and the stress, but it's more than just plugging numbers into a formula.
- #6
Khashishi
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Are you looking for an order of magnitude estimate or something better? I think you need a numerical simulation to calculate it reasonably accurately. It's pretty involved. You are missing the dimensions of the notch in the drawing.
I'm guessing I could bend it by stepping on it in the center with both ends supported, but that's just a gut feeling
I'm guessing I could bend it by stepping on it in the center with both ends supported, but that's just a gut feeling
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