Rev2 model Here are the results from the Rev2 model. In this case the pins are supported by the beam both inside and outside the plates, to a...
Rev1 results Here are the results from the rev1 model. Main features are that the kink is causing high stresses, and the bearing area in the 1/2"...
BruceB's buc33 rev2 Hi Bruce, Here is a drawing of the arrangement you previously specified. Bad news is that there is an error in your...
1 1/4" is 32mm, do you mean 32 or 36mm?
Looks good Bruce. Does this match the dimensions in the previous post? If so, I'll model it. I've been tied up with real work again but have some...
I'll draw that in CAD and see how kinked the top arm needs to be.
Yes, thanks, we're just getting back into normal service. A major problem with this geometry is the bending moment induced on the pins due to the...
FEA Rev 0 results Hi Bruce, trust you had a good holiday/New Year. Here are results for the rev 0 model. This has 6000lb applied at an angle of...
No problem Bruce, I will run this model anyway now it is generated, to see how the numbers work out with the material specified. It will give us a...
I can't remember where this was previously discussed. It appears that the thin inserts act as lubricant/gap fillers only, not as conventional...
Designing the boat from scratch, I would use a double hinged beam with a single coupled folding controller, but I am not sure how practical this...
No problem. I have to say that, after looking at this, I am not sure I would design a folding system like this if it were my boat. You have four...
Model images Bruce, here are a few images of your model. I've gone with a solid model for the braces, and tried a range of element definitions....
It's not a problem. I'm travelling for the next few days, so won't be online much, but will have a few hours to look at this. Imperial...
Here's a copy with dimensions on it. Unfortunately I draw in mm, so have converted all your imperial to metric. I've also attached my conversion...
Attached is my CAD file. You can see the discrepancies at the upper holes. They are drawn based on the vertical offsets, and the beam lengths,...
I've plotted this into CAD, and there are small inconsistencies of between 6.5mm and 8mm, so not critical from an analysis point of view. With...
No problem, just don't want to spend time analysing a geometry that is not valid. It is very sensitive to dimensions, so some slop will greatly...
Some geometry issues Bruce, I've been checking the dimensions given for the FE model by plotting out the arrangement in CAD, see attached. There...
Funnily enough, the reason I bought this cat is because it is easy to mount a pod between the hulls in which to mount a propulsion unit, as we are...
