Stress for v-band clamp under loading

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SUMMARY

The discussion focuses on analyzing the stresses in a v-band clamp under loading conditions, specifically the forces exerted by the flange and plug as pressure increases. The user is employing the formula (6 P L) / (b h^2) to calculate stresses, treating the clamp's center web as a rectangular section. Concerns are raised about the accuracy of these calculations, indicating that the stresses obtained are excessively high. The complexity of accurately analyzing v-band clamps is acknowledged, suggesting a need for more precise modeling techniques.

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formula428
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I have a v-band clamp and I'm wanting to know the stresses for such a section. I'm interested in the forces and resultant stresses on the clamp from the flange and plug (inside the v band) opposing each other as pressure is increased. I thought of treating the section as an effective channel member in flexure such that the section is bending about an asymmetrical axis. Think of it as having a U, turning it upside down and then applying force/moment pushing down on the web.

However, the stresses I'm getting are really high. Maybe I'm calculating it wrong?

Right now I'm using (6 P L) / (b h^2) and treating the center "web" to simply be a rectangle.
 
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They are tricky things to analyse properly .

Let us see a picture or a drawing off the particular clamp that you are interested in .

What forces do you think are acting in the clamp ?
 
Here's a rough FBD and my thoughts.
 

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