Interesting Biomechanics

[David Humphries]

Wow. What is going on there?? Someone please explain to me how stuff like that happens?

 

 

I'm guessing (from a relatively limited Mattheck understanding) that the branch is under serious lateral & vertical torsional stress & that it's putting on these cross ribs (at points of weaness - notches) to acheive optimal mechanical tension along its length.

 

ain't nature great.

 

I agree sean I'd love to have the chance to have a butchers inside.

 

 

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Edited March 26, 2011 by Monkey-D

[Tony Croft aka hamadryad]

I will have to dig the one out I found in Hatfield forest, not as pronounced as this but a longer thinner branch doing exactly the same, hornbeams, ash and Birch seem the most prone to this type of adaptation.

 

Its all to do with the stress on a notch shear plane, always 45degree angles, ive wanted to see such a good example for a long, long time, its got it all there, and a lovely notch.

 

The stresses on this limb are extreme because the origional lead died, and a sub order lateral has taken over and gone of at almost 90 deg and extended so far. the torsional moments on that limb must be immense during gusts!

 

love it.

[D Mc]

Wow. What is going on there?? Someone please explain to me how stuff like that happens?

 

Along with what David said it looks as if some secondary limb absorption may have taken place.

 

Dave

[sloth]

Along with what David said it looks as if some secondary limb absorption may have taken place.

 

Dave

 

Sorry to ask, what do you mean by this?

[D Mc]

Sorry to ask, what do you mean by this?

 

If you look at the starting point, it seems possible that there were multiple limbs in the past that grafted/merged with the main stem.

 

Dave

[sloth]

Ah ok, makes sense, not head it called that before, thanks

[sean]

Let the battle commence!

[David Humphries]

Sycamore vs. Tesco trolley

 

 

Bet the sycamore wouldn't have stood a chance if it had been a Waitrose trolley

 

 

 

 

 

 

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[Tony Croft aka hamadryad]

Bet the sycamore wouldn't have stood a chance if it had been a Waitrose trolley

 

 

 

 

 

 

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your such a snob!

[sean freeman]

Sycamore vs. Tesco trolley

 

You should put that one up on the ATF facebook page they were chassing pics of trees eating stuff a while back.