James Cain 9/26/14.  Model a baseball and baseball bats in Abaqus/CAE  Perform a dynamic analysis on the bat-ball interaction in Abaqus/Explicit  Modify.

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Presentation transcript:

James Cain 9/26/14

 Model a baseball and baseball bats in Abaqus/CAE  Perform a dynamic analysis on the bat-ball interaction in Abaqus/Explicit  Modify models with different physical properties such as material, mass, and size  Compare the analytical results of the bat performance to experimental data

 Baseball consists of four different materials ◦ Cork ◦ Rubber ◦ Wool ◦ Cowhide Material Properties of a Baseball Density (lb/in 3 ) Short-Time Shear Modulus (psi) Long-Time Shear Modulus (psi) Decay ConstantBulk Modulus (psi)

 Average baseball diameter is 2.90” FEA model of a baseball

 Bat materials chosen are ash, aluminum, and aluminum BBCOR  Research for aluminum BBCOR properties is ongoing Material Properties of Ash Density (lb/in 3 ) Elastic Modulus (psi)Shear Modulus (psi)Poisson’s Ratio E1E1 E2E2 E3E3 G 12 G 23 G 13 ν 12 ν 23 ν x x x x x x Material Properties of Aluminum Density (lb/in 3 )Elastic Modulus (psi)Poisson’s Ratio x

 Bat length, barrel diameter, and handle diameter are same size for all three bats ◦ Length: 34” ◦ Barrel diameter: 2.5” ◦ Handle Diameter: 1.0”  Ash bat is solid, whereas aluminum bats have solid handle and hollow barrel with 0.1” thick wall

FEA model of a wood baseball bat

FEA model of the aluminum bats showing hollow barrel

 Milestones ◦ Research material properties for BBCOR aluminum bat ◦ Research experimental data on wood and metal baseball bat performances ◦ Create FEM to show contact between baseball and bat ◦ Run FEM to determine effects of different variables and process results  Deadlines ◦ First Progress Report September 26, 2014 ◦ Second Progress Report October 17, 2014 ◦ Final Draft November 7, 2014 ◦ Preliminary Final Report November 28, 2014 ◦ Final Report December 12, 2014