Thesis
Experimental and computer modeling to characterize the performance of cricket bats
Washington State University
Master of Science (MS), Washington State University
2008
Handle:
https://hdl.handle.net/2376/102422
Abstract
The performance of cricket bats depend upon the properties of cricket balls, bat swing speed, and the nature of the wood. An experimental test apparatus was developed to measure the performance of cricket bats and balls representative of play conditions. Experiments were carried out to measure the coefficient of restitution (COR) and hardness of the cricket balls. The ball COR and hardness of seam impacts was slightly higher than face impacts (~1%). Thus bat performance and durability should be insensitive to ball orientation. A bat performance measure was derived in terms of an ideal batted-ball speed (BBS) based on play conditions. The average performance of four bats was nearly unchanged from knock-in (a common treatment to new cricket bats), (knock-in decreased performance <0.1%). Wood species also had a small effect on the bat performance. A composite skin, applied to the back of some bats, was observed to increase performance measurably, but still by a relatively small amount (1.4%). While different treatments of cricket bats had a measurable effect on performance, they were smaller than the 10% difference observed between solid wood and hollow baseball and softball bats. A dynamic finite element model was employed to simulate the bat-ball impact. The ball was modeled as a linear viscoelastic material, which provided for energy loss during impact. The ball model was tuned to agree with the measured COR and impact force. The model found good agreement with experimental bat performance data for all impact conditions considered. A model of a composite skin applied to the back of the bat increased performance comparable to that found experimentally. Weight was added to the model at different points on the cricket bat to study the effect of inertia on bat performance. Increasing the moment of inertia by 15% increased the batted-ball speed by 1%.
Metrics
43 File views/ downloads
55 Record Views
Details
- Title
- Experimental and computer modeling to characterize the performance of cricket bats
- Creators
- Harsimranjeet Singh
- Contributors
- Lloyd V. Smith (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Mechanical and Materials Engineering, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525201801842
- Language
- English
- Resource Type
- Thesis