Interesting! I am familiar with hysteresis, but not with that definition. The definition of Hysteresis i am familiar with always involves a non linear time component. Whereby the history of a system has a non linear effect on it's behavior. Pulley systems should be fairly consistent in their performance over time. Definitely complex to model though. If you have a reference to that usage or definition, pls share. I would definitely add it to my dictionary if we're sure about the definition. I did a very quick search on hysteresis in Pulley systems and didn't find anything obvious. Thanks!
Appreciate that. I don't know Jen. I Googled and found the chef... is that who ya meant?
Unlike Hysterics which is the unrecoverable loss of all your possessions from an ex wife?
archeryhistorian.com
I miss those reports by Norm! He also, I thought, compared dynamic vs static hysteresis. Interestingly enough, a bow was always more efficient with a heavier arrow.Physics of Archery - Archery Historian
This article discusses the physics of archery, from fundamental principles to more advanced experiments and mathematical formula.Physics of Bow Efficiency: Hysteresis
Hysteresis is a term in physics and engineering which refers to the unrecoverable loss of energy in a system. This energy may escape a mechanism such as a bow through heat, resistance with the air, internal friction, recoil, etc. Substracting these losses from the measurement of stored energy as done in a force-draw calculation/diagram, we can get a better idea of the efficiency of a bow.
(It may not be the most accurate definition of the word Hysteresis, but it is a good definition to help to understand where the loss of energy comes from.)
I remember years ago, reading all the Bowhunting world magazine bow reports by Norb Mullaney and he would always test the hysteresis of a bow and calculate the bow's efficiency.
Thats true. However, the measuring equipment Norm used isn't nearly as sensitive (or accurate) as what exists today.
That's a great article. Really appreciate your inputs! I also did some more research. In the context he is using the term, i believe the correct term would be "elastic hysteresis". No big deal... he probably knew that and just shortened it. Back on the video, i believe the mechanics are ok to generically refer to as "loss". I didn't really do any research before making the video... i should have in retrospect. I just found a reputable article on the topic if of interest to anyone. And i will say that the presence of a friction hitch in the system and what it is and the amount of setback we can tolerate are big contributing factors to the actual mechanical advantage.Physics of Archery - Archery Historian
This article discusses the physics of archery, from fundamental principles to more advanced experiments and mathematical formula.Physics of Bow Efficiency: Hysteresis
Hysteresis is a term in physics and engineering which refers to the unrecoverable loss of energy in a system. This energy may escape a mechanism such as a bow through heat, resistance with the air, internal friction, recoil, etc. Substracting these losses from the measurement of stored energy as done in a force-draw calculation/diagram, we can get a better idea of the efficiency of a bow.
(It may not be the most accurate definition of the word Hysteresis, but it is a good definition to help to understand where the loss of energy comes from.)
I remember years ago, reading all the Bowhunting world magazine bow reports by Norb Mullaney and he would always test the hysteresis of a bow and calculate the bow's efficiency.
Me too, I always looked forward to reading Norb's bow reports every month. Those reports were actually useful and insightful.
