Baseball bat vibration. Why Does My Softball Bat Vibrate? [Reasons And Solutions] 2022-10-24
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Baseball bat vibration is a phenomenon that occurs when a ball is hit with a bat. When a ball is struck with a bat, the energy of the impact is transferred from the ball to the bat. This energy causes the bat to vibrate, and the frequency and intensity of this vibration can vary depending on the properties of the bat and the ball, as well as the speed and angle at which the ball is struck.
One of the primary factors that affects the vibration of a baseball bat is the material it is made of. Bats can be made from a variety of materials, including wood, metal, and composite materials. Each of these materials has its own unique properties that can affect the way the bat vibrates when it is struck.
Wood bats, for example, are known for their tendency to vibrate more than metal or composite bats. This is because wood is a relatively soft and flexible material, so it absorbs more of the energy of the impact. As a result, wood bats tend to have a lower "trampoline effect," which is the measure of how much energy is transferred back to the ball when it is hit.
On the other hand, metal and composite bats are known for their ability to transfer more energy back to the ball when it is hit. This is because these materials are harder and less flexible than wood, so they absorb less of the energy of the impact. As a result, metal and composite bats tend to have a higher trampoline effect and can produce harder-hit balls.
Another factor that can affect the vibration of a baseball bat is the speed and angle at which the ball is struck. A ball that is struck with a high speed and a steep angle is more likely to cause the bat to vibrate more than a ball that is struck with a lower speed and a more shallow angle. This is because the higher speed and steeper angle of the ball increase the amount of energy that is transferred to the bat during the impact.
In conclusion, baseball bat vibration is a natural phenomenon that occurs when a ball is struck with a bat. The material of the bat, as well as the speed and angle at which the ball is struck, can all affect the way the bat vibrates. Understanding these factors can help players choose the right bat for their needs and improve their performance on the field.
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Human hands are sensitive to vibration frequencies between 200 Hz and 700 Hz, Russell says. The vibration is quite intense, and some hitters even have to drop the bat as it becomes extremely difficult to hold on to it. But Daniel Russell, a professor in the graduate program in acoustics at Pennsylvania State University in University Park, has figured out that bat vibrations between 600 and 700 hertz Hz cause the most pain and that specifically tuned vibration absorbers are the best at combatting the sting. I measure the vibration response of the bat with a very small 1. Keep practicing hard, and you can make all your time spent in the batting cage truly worth it. Holden, "Beating those vibration blues," Science Magazine 254, 1290-1291 November 29, 1991.
There are many 2 piece bats on the market like the connexion by easton that are designed to prevent sting. Equipment setup for experimental modal analysis. Placeholder for a video showing how an aluminum bat without the ConneXion continues to ring for several seconds after being hit, while post-impact vibration for a ConneXion bat dies away almost exactly after impact, with no ringing. Simply put, the impact of the ball on the softball bat causes it to rattle and vibrate. Share: Miss hitting the "sweet spot" on a baseball bat and the resulting vibrations can zing your hands. The other, and more painful sting, is a sharp bruising pain felt in the fleshy webbing between the thumb and forefinger on the top hand farthest from the knob. Russell, " Back to the.
In addition, the velocity of the bat gets cut by almost half, allowing you to slow it down without feeling any vibration in your hands. Most power hitters, when asked if their hand stings after a perfect shot, say that they do not feel anything. But after consulting baseball players, Russell learned that the most painful sensations occur in the top hand, where vibration frequencies between 600 and 700 Hz reside. . Composite bats, on the other hand, typically feature different technologies that can reduce vibration.
The second bending mode, usually occuring near 600Hz, is also very important as it also has a node about 2-3 inches from that of the first bending mode. What Does a Rattle in a Softball Bat Mean? Other options to reduce the vibration are to wear a glove or install a vibration-eliminating bat knob. The absorber weighs a couple of ounces to the total weight of the bat. In this web article I'll discuss the vibrations in the bat that are responsible for this painful sting, and what various manufacturers have done in an attempt to minimize the sensation of sting. This bat is loaded with amazing tech. The higher bending modes probably have little influence on the feel of the bat, but computer calculations have shown that they can significantly influence the post-impact ball speed. Comparing FRF results for three impact locations allows for identification of bending and hoop modes.
While the four bending modes are present in the FRF, the two hoop modes H1 and H2 are missing. But it can become a learning tool for you. Each FRF record is saved for post-processing with special computer software to produce the cool animations of the vibrating mode shapes. As the animation above at right shows, the first bending mode has a node underneath the location of the top hand, while the second bending mode has an antinode location of maximum displacement on the handle almost exactly at the spot where painful sting is most strongly felt in the fleshy webbing between thumb and first finger on the top hand. In addition, the player will not feel any vibration at this frequency. So, which bending mode is more important: the first or the second bending mode? From left to right, the video clips show an impact at the sweet spot, an impact outside the sweet spot toward the barrel end of the bat , and an impact inside the sweet spot toward the handle. Post-impact Vibrations for hits away from the sweet spot.
You can also wrap the handle of your bat with leather or padding to reduce some of the vibrations that you feel. There is an interesting beneficial side effect to the addition of a vibration absorber in the knob. If your softball bat is vibrating because of poor hits, then all I can tell you is to get better. Bats B and C had both been used to hit balls by 70 youth players, and every single player preferred the same bat. The photographs below show what it looks like.
Why Does My Softball Bat Vibrate? [Reasons And Solutions]
The frequency response from the accelerometer is divided by the frequency response of hammer impact resulting in what is called the Frequency Response Function FRF for the impact. High-speed video analysis showed that these vibrations are so violent, "the hands lose contact with the bat during a swing," says Russell. TOP Scan of the label from the wrapper of a new Easton LX8-V youth bat, a schematic of the V. To answer that question we need to look at the vibrational mode shapes a well, not just the frequencies. I tap the bat at 1-inch intervals along the length, keeping the accelerometer fixed, thus collecting a measurement of force input acceleration response for every pair of points along the length of the bat.
But what exactly causes this vibration? This is because the hoop modes only involve a vibration of the barrel of the bat, not the handle. How Do You Stop a Softball Bat from Vibrating or Rattling? This 2-piece composite design is equipped with the latest in Easton technology, including a Dynamic Feel System carbon handle that provides more stiffness. The reason bats sting is because the impact with the ball causes the bat to vibrate, and the vibrations in the handle can result in a painful sensation in the hands of the player holding the bat, especially in the top hand. However, with some experience comparing FRF data for a couple of different impact locations one can quickly identify the frequencies for the different types of vibrational patterns a bat exhibits. Or, are they equally important? I measured the vibrational mode shapes and frequencies for a collection of baseball and softball bats to determine the range of frequencies that needed to be targeted, and determined values of the the mass and stiffness of the vibration damper in order to more effectively reduce the unwanted vibration in a bat. From July 2004 through November 2007, I did a fair amount of vibration testing for Albin's marketing group, to help improve the performance of Albin's damper for baseball bats.
In order to keep the total bat weight similar to other bat models for example, a minus-3 drop bat would weigh 31-oz for a 34-inch length weight must be removed from the barrel end of the bat. Your softball bat vibrating can mean only two things; either you missed the sweet spot of the ball when you hit it, or the softball bat is broken. Russell, " Engineering of Sport 6 - Developments for Sports, Vol. The first step to stopping the bat from vibrating is to identify the cause. A Few Words of Wisdom The key to eliminating vibration or rattling in your bat is to hit with consistency.
