Figster Posted Sunday at 06:43 PM Share Posted Sunday at 06:43 PM Just now, Punching Bag said: The NFL needs to penalize more meaningfully lowering and hitting with head as Tua did. It will not include when player moves head into hit. It needs to involve loss of game checks and suspended from games when player is healthy. Penalties will increase with repeated use of helmet as weapon. A player may choose to hit opposition player with head for it may prevent a big play and they feel that is worth it but if it is a bigger penalty each time they will change their actions. Penalty can be called both ways. The whole problem here is for defenders the head is in between two tackling arms. For ball carriers any forward lean and your head is going to be the 1st part of your body that makes contact in many instances IMO. Quote Link to comment Share on other sites More sharing options...
Figster Posted Sunday at 06:49 PM Share Posted Sunday at 06:49 PM (edited) 10 minutes ago, Einstein said: And then where does that compressed air go? Take a rubber glove and fill it with air. Then squeeze, push, or hit with a hammer. The air gets pushed into other fingers or parts of the glove. Edited Sunday at 06:56 PM by Figster Quote Link to comment Share on other sites More sharing options...
Einstein Posted Sunday at 06:53 PM Share Posted Sunday at 06:53 PM 5 minutes ago, Sierra Foothills said: In mechanics the use of pressure relief valves is quite common. The problem with pressure relief valves are three-fold: 1) The existence of such valve mitigates the cushioning effect of the air bladder. Thus why the Zorb balls you posted above don’t have them. If they did, the human inside would feel the hit of the person upon them, rather than being cushioned. 2) Another problem with a pressure relief valve is, even if you found some benefit (which is doubtful), you would have to find a way to reinflate to specification after each collision. 2) The next idea you will likely think of is a pressure relief valve that slowly dissipates energy. The problem with that is energy does not wait for you to dissipate. The kenetic to potential energy will spring back faster than you can relieve it over time. Quote Link to comment Share on other sites More sharing options...
Einstein Posted Sunday at 07:02 PM Share Posted Sunday at 07:02 PM 4 minutes ago, Figster said: Take a rubber glove and fill it with air. Then squeeze, push, or hit with a hammer. The air gets pushed into other fingers or parts of the glove. I say this with kindness: Your understanding of physics is deeply flawed and it’s preventing you from seeing how far off-base your suggestions are. When you squeeze or hit a glove filled with air, the air simply moves - it’s redistributed, not absorbed, dissipated, or dampened. Redistribution of air does nothing to negate energy; it just shifts the energy to another area. In the context of a helmet, this would be dangerous. Redistributing all that impact energy to specific points on the head means certain areas could take much more force, increasing the risk of injury. The point of a helmet is to absorb and dissipate energy across the entire surface, preventing it from reaching the brain. Redistribution, on the other hand, does nothing but move the risk to a different area without reducing it. As you and Sierra are finding out, this is a very complex problem. We have many PhD’s working on this issue and it’s difficult for them as well. There is no simple answer. 1 Quote Link to comment Share on other sites More sharing options...
Figster Posted Sunday at 07:51 PM Share Posted Sunday at 07:51 PM (edited) 4 hours ago, Einstein said: I say this with kindness: Your understanding of physics is deeply flawed and it’s preventing you from seeing how far off-base your suggestions are. When you squeeze or hit a glove filled with air, the air simply moves - it’s redistributed, not absorbed, dissipated, or dampened. Redistribution of air does nothing to negate energy; it just shifts the energy to another area. In the context of a helmet, this would be dangerous. Redistributing all that impact energy to specific points on the head means certain areas could take much more force, increasing the risk of injury. The point of a helmet is to absorb and dissipate energy across the entire surface, preventing it from reaching the brain. Redistribution, on the other hand, does nothing but move the risk to a different area without reducing it. As you and Sierra are finding out, this is a very complex problem. We have many PhD’s working on this issue and it’s difficult for them as well. There is no simple answer. Fair enough, I appreciate the input The simple answer for now, put a Guardian cap on the mess helmet designers have created. Get it on the heads of the players... https://safetyairproducts.com/ controlled-rate impact deceleration comfortable and secure shock absorption system Different application albeit... Note: A body in free fall hits the speed of approximately 120 mph in 3 to 5 seconds. Edited Sunday at 11:57 PM by Figster 1 Quote Link to comment Share on other sites More sharing options...
Mr. WEO Posted Sunday at 10:44 PM Share Posted Sunday at 10:44 PM 3 hours ago, Einstein said: . The kenetic to potential energy will spring back faster than you can relieve it over time. I can personally vouch for the truth of this statement 1 Quote Link to comment Share on other sites More sharing options...
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