Check my numbers please?

[Amelanchier]

This model concentrates the D.W.T. I confused the compound dynamic rigging with the static D.W.T. rigging.

Continue....

 

Sorry, you've lost me again.

 

Might help to talk it through slower - it 'd help me, anyone else who's reading and make it easier for the site/google software to find search terms for the future...

[Bundle 2]

Optimisation of what?

(or wherever the forces run at that particular situation)?

As you correctly point out, the compound rigging dynamic has enabled you concerntrate values....which is why rigging is so interesting...or perhaps why peoples common misconceptions about the forces and unknown " bucket chemistry" can lead to some frankly

dodgy practices.....

I frequently find myself taking wrong turns...

 

Essentially, as long as the values you are using in the equations are input correctly then optimisation becomes a process of compromise...as it is clearly more effective to achieve a goal going a-b...but not necessarily desirable.....If you set out to spread loads as efficiently as poss, then this will be true as you apply mech advantage...I think! at leasttheir value is known, so adjustments can be made to fine tune a set-up.....

It is faintly ridiculous to think that whilst applying green log weights to a system, calculating loads/forces whu, we essentially load a system on a grcs eg, introducing unknown values about an access of unknown static resistance/capacity....scary huh...at least it should be!!!

[softbankhawks]

So more simply put, it is the forces going IN that we should think about aswell?

[softbankhawks]

An overloaded pull line can promote a barberchair.

[Bundle 2]

So more simply put, it is the forces going IN that we should think about aswell?

Nice one.....

[Bundle 2]

http://66.102.9.104/search?q=cache:cZRz42WnL2QJ:www.treelink.org/joa/2003/may/06James.pdf+ken+james+Mass+Damping

 

 

[Rowan the Bruce]

Interesting paper thanks for that. Mind boggling stuff really.

[Bundle 2]

An overloaded pull line can promote a barberchair.

 

 

A barberschair is promoted by the collapse of the stem beneath the felling cut due to the downward forces ( weight ) and the moment force at the time the directional cut ( gob ) closes and the " hinge" snaps effectively. In truth, the holding force of the wood needs be overcome at this time and if so, no barberschair......( I would not argue that this not the only ocurrence of what I have longsince regarded as barberschair failure)....read this ( Application of Engineering...etc..( view pdf) )

 

http://arbtalk.co.uk/forum/showthread.php?t=4477

 

More stuff on canopy design and mass damping....." Aerodynamic Features of the Tree " ( view pdf )

 

 

http://joa.isa-arbor.com/articles.asp?JournalID=1&VolumeID=16&IssueID=9