Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability
A brake disc decelerates the vehicle through friction with the brake pads. When the brake system is overheated, brake fade can occur, in which the friction coefficient drops significantly. Additionally, an over-heated brake system may cause vapor lock, in which the brake hydraulic fluid is vaporized...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/3/1171 |
| _version_ | 1797489359620931584 |
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| author | Soojin Park Kibum Lee Sunwoo Kim Jinho Kim |
| author_facet | Soojin Park Kibum Lee Sunwoo Kim Jinho Kim |
| author_sort | Soojin Park |
| collection | DOAJ |
| description | A brake disc decelerates the vehicle through friction with the brake pads. When the brake system is overheated, brake fade can occur, in which the friction coefficient drops significantly. Additionally, an over-heated brake system may cause vapor lock, in which the brake hydraulic fluid is vaporized. These phenomena can lead to the loss of braking power and cause a fatal accident. Therefore, brake systems must have stable braking and heat dissipation performance. Having through-holes and slits on the friction surface of the rotor has been adopted to improve the heat dissipation performance, but the holes become stress points and potentially cause cracks. Therefore, brake systems should be designed to have structural stability as well as good heat dissipation. In this study, finite element (FE) modeling was developed to analyze the structural stability and heat dissipation performance of a brake system, and structural and thermal simulations were performed in ANSYS, a CAE software package. In addition, to minimize concentrated stress and temperature, optimal design of the shape and pattern of holes and slits was carried out using PIAnO, an integrated optimal design software package. The first step of design optimization was performed while considering the shape and pattern of the disc holes and slits as design factors. Among the design factors, those with the largest effects on the objective functions were found and set as new design factors to perform the second step. The designs were compared to existing discs. Through the optimization presented in this paper, it is expected that the performance of the braking system will improve and the life of the brake parts will be increased. |
| first_indexed | 2024-03-10T00:15:26Z |
| format | Article |
| id | doaj.art-dcaf6c0bfd654326860f381832a327b9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:15:26Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-dcaf6c0bfd654326860f381832a327b92023-11-23T15:53:07ZengMDPI AGApplied Sciences2076-34172022-01-01123117110.3390/app12031171Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural StabilitySoojin Park0Kibum Lee1Sunwoo Kim2Jinho Kim3Department of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, Gyeongsangbuk-do, KoreaStructure CAE Team, SL Corporation, 77 Gongdan 6-ro, Jillyang-eup, Gyeongsan-si 38470, Gyeongsangbuk-do, KoreaDepartment of Mechanical Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775-5905, USADepartment of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, Gyeongsangbuk-do, KoreaA brake disc decelerates the vehicle through friction with the brake pads. When the brake system is overheated, brake fade can occur, in which the friction coefficient drops significantly. Additionally, an over-heated brake system may cause vapor lock, in which the brake hydraulic fluid is vaporized. These phenomena can lead to the loss of braking power and cause a fatal accident. Therefore, brake systems must have stable braking and heat dissipation performance. Having through-holes and slits on the friction surface of the rotor has been adopted to improve the heat dissipation performance, but the holes become stress points and potentially cause cracks. Therefore, brake systems should be designed to have structural stability as well as good heat dissipation. In this study, finite element (FE) modeling was developed to analyze the structural stability and heat dissipation performance of a brake system, and structural and thermal simulations were performed in ANSYS, a CAE software package. In addition, to minimize concentrated stress and temperature, optimal design of the shape and pattern of holes and slits was carried out using PIAnO, an integrated optimal design software package. The first step of design optimization was performed while considering the shape and pattern of the disc holes and slits as design factors. Among the design factors, those with the largest effects on the objective functions were found and set as new design factors to perform the second step. The designs were compared to existing discs. Through the optimization presented in this paper, it is expected that the performance of the braking system will improve and the life of the brake parts will be increased.https://www.mdpi.com/2076-3417/12/3/1171disc brakedesign optimizationfinite elements analysisstresstemperature distributionventilated brake disc |
| spellingShingle | Soojin Park Kibum Lee Sunwoo Kim Jinho Kim Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability Applied Sciences disc brake design optimization finite elements analysis stress temperature distribution ventilated brake disc |
| title | Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability |
| title_full | Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability |
| title_fullStr | Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability |
| title_full_unstemmed | Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability |
| title_short | Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability |
| title_sort | brake disc holes and slit shape design to improve heat dissipation performance and structural stability |
| topic | disc brake design optimization finite elements analysis stress temperature distribution ventilated brake disc |
| url | https://www.mdpi.com/2076-3417/12/3/1171 |
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