Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings
| dc.contributor.author | Langdon, Genevieve S | |
| dc.contributor.author | Qi, Ruixuan | |
| dc.contributor.author | Cloete, Trevor J | |
| dc.contributor.author | Chung Kim Yuen, Steeve | |
| dc.date.accessioned | 2022-04-07T08:27:59Z | |
| dc.date.available | 2022-04-07T08:27:59Z | |
| dc.date.issued | 2022-01-21 | |
| dc.date.updated | 2022-02-11T14:46:17Z | |
| dc.description.abstract | This paper presents insights into the influence of ball size on the flight characteristics and damage of a ball bearing embedded in a rear detonated cylindrical charge. It includes results from a post-test damage analysis of ball bearings from previously reported experiments. Computational simulations using Ansys Autodyn were used to provide extra information about the velocity variation during flight and the damage sustained by the ball bearings during the blast event. The influence of bearing size (diameter and mass) was investigated using the validated simulation models to extend the dataset beyond the initial experimental work. The peak bearing velocity is influenced by the charge mass to ball bearing mass ratio and the aspect ratio of the charge. Larger ball bearings require extra momentum to accelerate them to higher velocities, but their higher surface area means a greater portion of the explosive charge is involved in transferring kinetic energy to the projectile. Tensile spalling was to be the major damage mechanism within the ball bearings. The charge aspect ratio also influenced the hydrostatic pressure propagation within the ball bearing itself, affecting the location and degree of internal cracking within the bearings. These findings will prove valuable to blast protection engineers considering the effects of embedded projectiles in improvised explosive devices. | |
| dc.identifier | doi: 10.3390/app12031133 | |
| dc.identifier.apacitation | Langdon, Genevieve S., Qi, R., Cloete, Trevor J., & Chung Kim Yuen, S. (2022). Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings. <i>Applied Sciences</i>, 12(3), http://hdl.handle.net/11427/36285 | en_ZA |
| dc.identifier.chicagocitation | Langdon, Genevieve S., Ruixuan Qi, Trevor J. Cloete, and Steeve Chung Kim Yuen "Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings." <i>Applied Sciences</i> 12, 3. (2022) http://hdl.handle.net/11427/36285 | en_ZA |
| dc.identifier.citation | Langdon, Genevieve S., Qi, R., Cloete, Trevor J. & Chung Kim Yuen, S. 2022. Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings. <i>Applied Sciences.</i> 12(3) http://hdl.handle.net/11427/36285 | en_ZA |
| dc.identifier.ris | TY - Journal Article AU - Langdon, Genevieve S. AU - Qi, Ruixuan AU - Cloete, Trevor J. AU - Chung Kim Yuen, Steeve AB - This paper presents insights into the influence of ball size on the flight characteristics and damage of a ball bearing embedded in a rear detonated cylindrical charge. It includes results from a post-test damage analysis of ball bearings from previously reported experiments. Computational simulations using Ansys Autodyn were used to provide extra information about the velocity variation during flight and the damage sustained by the ball bearings during the blast event. The influence of bearing size (diameter and mass) was investigated using the validated simulation models to extend the dataset beyond the initial experimental work. The peak bearing velocity is influenced by the charge mass to ball bearing mass ratio and the aspect ratio of the charge. Larger ball bearings require extra momentum to accelerate them to higher velocities, but their higher surface area means a greater portion of the explosive charge is involved in transferring kinetic energy to the projectile. Tensile spalling was to be the major damage mechanism within the ball bearings. The charge aspect ratio also influenced the hydrostatic pressure propagation within the ball bearing itself, affecting the location and degree of internal cracking within the bearings. These findings will prove valuable to blast protection engineers considering the effects of embedded projectiles in improvised explosive devices. DA - 2022-01-21 DB - OpenUCT DP - University of Cape Town IS - 3 J1 - Applied Sciences LK - https://open.uct.ac.za PY - 2022 T1 - Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings TI - Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings UR - http://hdl.handle.net/11427/36285 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/36285 | |
| dc.identifier.uri | https://doi.org/10.3390/app12031133 | |
| dc.identifier.vancouvercitation | Langdon Genevieve S, Qi R, Cloete Trevor J, Chung Kim Yuen S. Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings. Applied Sciences. 2022;12(3) http://hdl.handle.net/11427/36285. | en_ZA |
| dc.publisher | Multidisciplinary Digital Publishing Institute | |
| dc.rights.license | https://creativecommons.org/licenses/by/4.0/ | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.source | Applied Sciences | |
| dc.source.journalissue | 3 | |
| dc.source.journalvolume | 12 | |
| dc.source.uri | https://www.mdpi.com/journal/applsci | |
| dc.subject | improvised explosive devices | |
| dc.subject | blast loading | |
| dc.subject | deformation | |
| dc.subject | damage | |
| dc.subject | ball bearings | |
| dc.title | Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings | |
| dc.type | Journal Article |