Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field
Taking the hafnium diboride ceramic as an example, the effects of heating rate, cooling rate, thermal shock initial temperature, and external constraint on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) were studied through numerical simulation in this paper. The resul...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2011/757543 |
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| author | Weiguo Li Tianbao Cheng Dingyu Li Daining Fang |
| author_facet | Weiguo Li Tianbao Cheng Dingyu Li Daining Fang |
| author_sort | Weiguo Li |
| collection | DOAJ |
| description | Taking the hafnium diboride ceramic as an example, the effects of heating rate, cooling rate, thermal shock initial temperature, and external constraint on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) were studied through numerical simulation in this paper. The results show that the external constraint has an approximately linear influence on the critical rupture temperature difference of UHTCs. The external constraint prepares a compressive stress field in the structure because of the predefined temperature field, and this compressive stress field relieves the tension stress in the structure when it is cooled down and then it improves the TSR of UHTCs. As the thermal shock initial temperature, a danger heating rate (or cooling rate) exists where the critical temperature difference is the lowest. |
| format | Article |
| id | doaj-art-6c0f854841ee4d49a85367b39f2dc08d |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-6c0f854841ee4d49a85367b39f2dc08d2025-08-20T02:06:12ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422011-01-01201110.1155/2011/757543757543Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress FieldWeiguo Li0Tianbao Cheng1Dingyu Li2Daining Fang3Department of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, ChinaDepartment of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, ChinaDepartment of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, ChinaLaboratory of Turbulence and Complex Systems and College of Engineering, Peking University, Beijing 100871, ChinaTaking the hafnium diboride ceramic as an example, the effects of heating rate, cooling rate, thermal shock initial temperature, and external constraint on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) were studied through numerical simulation in this paper. The results show that the external constraint has an approximately linear influence on the critical rupture temperature difference of UHTCs. The external constraint prepares a compressive stress field in the structure because of the predefined temperature field, and this compressive stress field relieves the tension stress in the structure when it is cooled down and then it improves the TSR of UHTCs. As the thermal shock initial temperature, a danger heating rate (or cooling rate) exists where the critical temperature difference is the lowest.http://dx.doi.org/10.1155/2011/757543 |
| spellingShingle | Weiguo Li Tianbao Cheng Dingyu Li Daining Fang Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field Advances in Materials Science and Engineering |
| title | Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field |
| title_full | Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field |
| title_fullStr | Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field |
| title_full_unstemmed | Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field |
| title_short | Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field |
| title_sort | numerical simulation for thermal shock resistance of ultra high temperature ceramics considering the effects of initial stress field |
| url | http://dx.doi.org/10.1155/2011/757543 |
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