SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC
Considering physical properties variation of gray cast iron with temperature,difference mechanical behavior of material between compression and tension,relationship of elastic and plastic stress-strain of material,synthetically studied the temperature field,stress field,strain field and thermal crac...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2017-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.05.030 |
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| _version_ | 1841535288063557632 |
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| author | NI Jing SHI LiFeng ZHENG LingNan YANG Xiao |
| author_facet | NI Jing SHI LiFeng ZHENG LingNan YANG Xiao |
| author_sort | NI Jing |
| collection | DOAJ |
| description | Considering physical properties variation of gray cast iron with temperature,difference mechanical behavior of material between compression and tension,relationship of elastic and plastic stress-strain of material,synthetically studied the temperature field,stress field,strain field and thermal crack strength of brake disc under different braking conditions,and revealed the opening mechanism of thermomechanical crack and crack distribution. Results of thermomechanical coupling simulation show the maximum temperature is 360℃ with initial speed of 180km/h,radial compression/tension stress are275Mpa/85 Mpa,circumferential compression/tension stress are 374 MPa/100 MPa,radial/circumferential plastic deformation are-4. 6 × 10<sup>-5</sup>/-6. 75 × 10<sup>-5</sup>. Results of thermomechanical opening calculation show stress intensity factor of radial crack ΔK6. 69 MPa·m<sup>1/2</sup>is larger than ΔK 5. 49 MPa·m<sup>1/2</sup>of circumferential crack,opening displacement of radial crack is larger than that of circumferential crack,which indicating radial cracks are mainly distributed on brake disc,and the sizes of radial crack are larger than that of circumferential crack. |
| format | Article |
| id | doaj-art-cd08f9e9e0d144198f675eadcec44703 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-cd08f9e9e0d144198f675eadcec447032025-01-15T02:33:34ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692017-01-01391175118030599665SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISCNI JingSHI LiFengZHENG LingNanYANG XiaoConsidering physical properties variation of gray cast iron with temperature,difference mechanical behavior of material between compression and tension,relationship of elastic and plastic stress-strain of material,synthetically studied the temperature field,stress field,strain field and thermal crack strength of brake disc under different braking conditions,and revealed the opening mechanism of thermomechanical crack and crack distribution. Results of thermomechanical coupling simulation show the maximum temperature is 360℃ with initial speed of 180km/h,radial compression/tension stress are275Mpa/85 Mpa,circumferential compression/tension stress are 374 MPa/100 MPa,radial/circumferential plastic deformation are-4. 6 × 10<sup>-5</sup>/-6. 75 × 10<sup>-5</sup>. Results of thermomechanical opening calculation show stress intensity factor of radial crack ΔK6. 69 MPa·m<sup>1/2</sup>is larger than ΔK 5. 49 MPa·m<sup>1/2</sup>of circumferential crack,opening displacement of radial crack is larger than that of circumferential crack,which indicating radial cracks are mainly distributed on brake disc,and the sizes of radial crack are larger than that of circumferential crack.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.05.030Themomechanical openningFinite element calculationGray cast ironElastic/plastic strain |
| spellingShingle | NI Jing SHI LiFeng ZHENG LingNan YANG Xiao SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC Jixie qiangdu Themomechanical openning Finite element calculation Gray cast iron Elastic/plastic strain |
| title | SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC |
| title_full | SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC |
| title_fullStr | SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC |
| title_full_unstemmed | SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC |
| title_short | SIMULATION STUDY ON OPENING MECHANISM OF THERMALMECHANICAL CRACK OF BRAKE DISC |
| title_sort | simulation study on opening mechanism of thermalmechanical crack of brake disc |
| topic | Themomechanical openning Finite element calculation Gray cast iron Elastic/plastic strain |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.05.030 |
| work_keys_str_mv | AT nijing simulationstudyonopeningmechanismofthermalmechanicalcrackofbrakedisc AT shilifeng simulationstudyonopeningmechanismofthermalmechanicalcrackofbrakedisc AT zhenglingnan simulationstudyonopeningmechanismofthermalmechanicalcrackofbrakedisc AT yangxiao simulationstudyonopeningmechanismofthermalmechanicalcrackofbrakedisc |