TheRedWorm
I AM the Red Worm!
- Joined
- Aug 13, 2007
- Messages
- 4,452
in addition:
He/she needs to explain this...
ETA: Start at 40 seconds
BumP
in addition:
He/she needs to explain this...
ETA: Start at 40 seconds
Easter is past (unless you are in Egypt or Russia) and all eggs have been eaten, but anyway. Take an egg, make a hole in it and empty it and you get an empty egg. Make same thing with 39 similar eggs.
Now glue 40 empty eggs together in a structure with four eggs at bottom (2x2) and another 9 similar layers of eggs on top. You have a nice egg structure 10 eggs high (4x10). Test it that it doesn't collapse. The eggs are the elements, the glue are the joints.
Now carefully remove the top 4 egg layer - that is part C - from the 36 egg tower below - that is part A. Now drop part C on part A!
If part C crushes part A, you have won the Challenge.
You can also use eggs full of white and yellow, if you like - raw or boilt - but they must all be same throughout and glued together. BTW you dont have to glue C to A to test structure but just test A for lateral stability (that all eggs are glued). Then drop part C (4 eggs glued together) on your part A World Easter Egg Tower and report! Photos are welcome.
I think I'm starting to understand you. If I have ten mice and I stand each one on a paper plate, one on top of the other, with sticks separating them and creating a little tower, I can pick up the top mouse and drop it on the other nine without causing the whole thing to fall down. You think that this would work the same if I used elephants. Is that what you believe?
You got it. But I suspect the elephant tower would spontaneously collapse during construction. This would lose you your challenge, as you didn't even have to drop the top part. A doggie tower might be on the borderline for a 10-layer furry creature tower. Weasels ?
p.s. don't forget to glue the weasels to the plates. It's part of the challenge.
All kidding aside, I don't think he sees any difference between snow and an avalanche. They both come down.
All kidding aside, I don't think he sees any difference between snow and an avalanche. They both come down.
I believe that you did mention money in this thread. It also seems that the money award is tied into this one, because completing the criteria for this one would simultaneously complete the criteria for that one.
Yes, only with Grizzly Bear! To cheer him up. Banzai! Aussies must comply with conditions in posts #1 and 239!
The reason why I offer $1M to anybody that can disprove my axiom, &c, is as follows:
It is very simple to model a One-way Crush down process. Take an object A and put in on the ground and then another object C. You drop C on A and A is crushed.
Why is that?
If C can apply suffient energy PE at impact C with A and following downward displacement and total strain energy SE that can be absorbed by A+C is less than PE and that C can absorb more strain energy than A and only deform elastically in the process, then A is crushed and C is not.
It is not really 'one-way' as C is always affected - elastic deformation - but it is pretty near.
I would conclude that 'one-way' crush down is only possible, if C can absorb more strain energy only as elastic deformation than A can absorb totally (elastic & plastic deformation, failures, &c).
If C is then only 1/10th of A volume/mass wise - as per Challenge conditions - and can only absorb 1/10th of A strain energy (A and C have same internal structure), then I would conclude C can never crush A in any model, size or scale.
It is just a question of strain energies! C has too little!
The Challenge is to prove me wrong!
Haewa's observations have already been published years ago. You can find them by googling Conservation of Momentum and Conservation of Energy.
Have fun - don't stay pwnd too long.
He still pwns me a $million, but he seems to be ignoring me now.
Basically, he claims there is no such thing as a progressive collapse. An avalanche is a progressive collapse. They think there is no way the same principle can be applied to a steel structure. This is of course at odds with what the rest of the world knows. But it makes for great entertainement as can be seen here : www.hewai.triandpooped.com
I think I'm starting to understand you. If I have ten mice and I stand each one on a paper plate, one on top of the other, with sticks separating them and creating a little tower, I can pick up the top mouse and drop it on the other nine without causing the whole thing to fall down. You think that this would work the same if I used elephants. Is that what you believe?
How is a 5 ton motor hitting a steel beam connecting steel columns together the same as a piano hitting solid ground?
Are you telling me that if a 5 ton motor hit the cross member of a steel structure, the motor would shatter into pieces?
So let me get this straight. According to you:
1. Solid ground = structual steel beams
2. A piano = a 5 ton elevator motor
Is that correct?
I dont understand. You seem to talk a lot about how the C part should be intact, but that doesn't appear in the challenge?
Edit: and can i use a card tower?
He/she needs to explain this...
I dont understand. You seem to talk a lot about how the C part should be intact, but that doesn't appear in the challenge?
Edit: and can i use a card tower?
He/she needs to explain this...
Why is this not a valid demonstration?
In The Heiwa Challenge the final result must be that the part A structure is crushed by part C. Whether part C remains intact or not is of no importance.
Card structures are welcome but joints between cards cannot rely solely on friction. I recommend a little glue between the cards but not too much so that the joints become stronger than the cards.
Joints in part C must have equal strength of joints in part A. Do not cheat and make part C joints stronger than the part A joints.
Problem with card structures is that their masses are small. Better is a structure of steel plates glued together = more mass = more potential energy to break the fu...ng joints. Tip - chose a plate element that is stiff and does absorb minimum energy in elastic compression = loss of energy. You want the energy to break the joints, not to compress the elements.
So now you have a tower of stiff steel plates glued together. Every plate is glued to at least two other plates (except the top ones). Tip - keep number of joints minimum to reduce strain energy in joints of structure! Next condition is that it must withstand a small lateral impact without getting damaged. It ensures that the the joints are up to challenge standard.
Note that there are about 10 times more joints/elements in part A than in part C.
Now, remove joints between parts C and A and, TEST TIME, you drop C on A! Many things may happen. C bounces (try bigger drop height), some joints are damaged and some steel plate elements drop down (not good enough - try higher drop height) ... or all 100% joints are damaged in part A and you have a heep of steel plate elements on the ground of what was C and A.
If 70% of all the joints between elements in part A are broken after drop you are a winner.
It sounds easy but breaking joints with loose steel elements is not easy. The loose steel plate/card element (two joints broken) has really only one chance if it becomes loose and drops and maybe it decides to just slide off and not destroy a joint. &c, &c.
You'll learn a lot while building your structure. Go for heavy elements and weakest possible, fixed joints that withstand lateral force (the lateral test) but minimum vertical load. OK, upper part C must be as weak as the lower part A, so what happens at contact is of interest. Will part C actually apply all its energy on part A at impact and destroy A joints ... or will the energy be applied on something else ... or just pass through all elements/joints in part A and be absorbed by the ground? What really happens at impact? And later. You'll find out. This is a very educational Challenge.
