Characterizing the performance of baseball bats

@article{Nathan2003CharacterizingTP,
  title={Characterizing the performance of baseball bats},
  author={Alan M. Nathan},
  journal={American Journal of Physics},
  year={2003},
  volume={71},
  pages={134-143}
}
  • A. Nathan
  • Published 10 January 2003
  • Physics
  • American Journal of Physics
The characterization of the performance of baseball bats is presented from a physics point of view. The goal is to define a set of laboratory measurements that can be used to predict performance in the field. The concept of a model-independent collision efficiency, which relates the post-collision ball speed to the initial ball and bat speeds, is introduced and its properties are investigated. It is shown to provide a convenient link between laboratory and field measurements. Other performance… 

Figures and Tables from this paper

A comparative study of baseball bat performance

The results of a comparative study of five aluminum and one wood baseball bats are presented. The study includes an analysis of field data, high-speed laboratory testing, and modal analysis. It is

Progress in measuring the performance of baseball and softball bats

The performance of baseball and softball bats has improved markedly over the past four decades. This has motivated many associations to develop test methods and measures to regulate bat performance.

Oblique collisions of baseballs and softballs with a bat

Experiments are done by colliding a swinging bat with a stationary baseball or softball. Each collision was recorded with high-speed cameras from which the post-impact speed, launch angle, and spin

Experimental Investigations of the Relationship of Baseball Bat Properties on Batted-Ball Performance

Laboratory tests are used to investigate the relationship between baseball bat performance and two bat properties: moment of inertia (MOI) and barrel stiffness for aluminum and composite bats. Each

An Examination of Cricket Bat Performance

The aims of this study were to experimentally measure and numerically describe the performance of cricket bats and balls. A dynamic finite element model was employed to simulate the bat-ball impact.

Sweet Spot and the Influence of Corking and Materials on Baseball Bat

In Section 1, we describe process of ball-bat collision using kinetic model, and derive the post-collision ball speed as a function of the hitting location. Then we differentiate the function and

An Examination of Cricket Bat Performance (P92)

The aims of this study were to experimentally measure and numerically describe the performance of cricket bats and balls. A dynamic finite element model was employed to simulate the bat-ball impact.

Describing the Performance of Cricket Bats and Balls

The aim of this study was to describe the performance of cricket bats and balls. An experimental test apparatus was developed to measure the performance of cricket bats and balls under dynamic impact

The Physics of the Trampoline Effect in Baseball and Softball Bats

In the high-speed collision between a baseball and bat, most of the initial center-of-mass kinetic energy is converted into compressional energy in the ball, and about 75% of that energy is
...

References

SHOWING 1-10 OF 17 REFERENCES

Evaluating baseball bat performance

Selected methodologies currently used to assess baseball bat performance were evaluated through a series of finite element simulations. Results of the comparison show that current test methods

Dynamics of the baseball–bat collision

A model is developed for the collision between the baseball and bat, taking into account the transverse bending vibrations of the bat. By coupling the flexible bat to the ball via a parametrized

The sweet spot of a baseball bat

The sweet spot of a baseball bat, like that of a tennis racket, can be defined either in terms of a vibration node or a centre of percussion. In order to determine how each of the sweet spots

Impact of a ball with a bat or racket

The collision of a ball with a baseball bat or a tennis racket is usually modeled in terms of rigid body dynamics, assuming that the hand exerts no impulsive reaction force on the handle during the

Relationship between bat mass properties and bat velocity

The relationship between bat mass properties (mass and moment of inertia) and bat velocity (linear and angular) was investigated for baseball and softball. Seventeen male collegiate baseball players

Differences in Batted Ball Speed With Wood and Aluminum Baseball Bats: A Batting Cage Study

Differences in the performance of wood and metal baseball bats, measured as a function of batted ball speed, were quantified in a batting cage study. Two wood and five metal baseball bat models were

The coefficient of restitution for collisions of happy balls, unhappy balls, and tennis balls

A perfectly happy ball is one that bounces to its original height when dropped on a massive, rigid surface. A completely unhappy ball does not bounce at all. In the former case, the coefficient of

Static and Dynamic Properties of Various Baseballs

In this study we investigated the compressive quasi-static mechanical properties and dynamic impact behavior of baseballs. Our purpose was to determine if static testing could be used to describe

Comment on ``The sweet spot of a baseball bat,'' by Rod Cross [Am. J. Phys. 66 (9), 772-779 (1998)]

poRod Cross 1 has published conclusions concerning the teraction of baseball bats and baseballs that appear to d in some respects from my own results. 2 Here I attempt to correct, clarify, and

Customising a tennis racket by adding weights

Most elite tennis players customise their rackets by adding weights at various points to enhance the performance of the racket and to improve its balance and feel. The additional weights also alter