Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics

doi:10.1007/s10483-015-1909-7

Applied Mathematics and Mechanics (English Edition) ›› 2015, Vol. 36 ›› Issue (2): 201-210.doi: https://doi.org/10.1007/s10483-015-1909-7

Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics

Tianbao CHENG^1,2, Weiguo LI^1,2, Yushan SHI^1,2, Wei LU^1,2, Daining FANG³

1. Chongqing Key Laboratory of Heterogeneous Material Mechanics, College of Aerospace Engineering, Chongqing University, Chongqing 400030, China;
2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, China;
3. State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

收稿日期:2014-03-26 修回日期:2014-07-28 出版日期:2015-02-01 发布日期:2015-02-01
通讯作者: Weiguo LI E-mail:wgli@cqu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Nos. 11472066 and 11172336), the Chongqing Natural Science Foundation (No. cstc2013jcyjA50018), the Program for New Century Excellent Talents in University (No. ncet-13-0634), and the Fundamental Research Funds for the Central Universities (Nos. CDJZR13240021 and CDJZR14328801)

Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics

Tianbao CHENG^1,2, Weiguo LI^1,2, Yushan SHI^1,2, Wei LU^1,2, Daining FANG³

1. Chongqing Key Laboratory of Heterogeneous Material Mechanics, College of Aerospace Engineering, Chongqing University, Chongqing 400030, China;
2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, China;
3. State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

Received:2014-03-26 Revised:2014-07-28 Online:2015-02-01 Published:2015-02-01
Contact: Weiguo LI E-mail:wgli@cqu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 11472066 and 11172336), the Chongqing Natural Science Foundation (No. cstc2013jcyjA50018), the Program for New Century Excellent Talents in University (No. ncet-13-0634), and the Fundamental Research Funds for the Central Universities (Nos. CDJZR13240021 and CDJZR14328801)

摘要/Abstract

摘要： The effects of mechanical boundary conditions, often encountered in thermalstructural engineering, on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) are studied by investigating the TSR of a UHTC plate with various types of constraints under the first, second, and third type of thermal boundary conditions. The TSR of UHTCs is strongly dependent on the heat transfer modes and severity of the thermal environments. Constraining the displacement of the lower surface in the thickness direction can significantly decrease the TSR of the UHTC plate, which is subject to the thermal shock at the upper surface. In contrast, the TSR of the UHTC plate with simply supported edges or clamped edges around the lower surface is much better.

关键词: mechanical boundary condition, thermal environment, thermal shock resistance (TSR), temperature-dependent material property, ultra-high temperature ceramic (UHTC)

Abstract: The effects of mechanical boundary conditions, often encountered in thermalstructural engineering, on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) are studied by investigating the TSR of a UHTC plate with various types of constraints under the first, second, and third type of thermal boundary conditions. The TSR of UHTCs is strongly dependent on the heat transfer modes and severity of the thermal environments. Constraining the displacement of the lower surface in the thickness direction can significantly decrease the TSR of the UHTC plate, which is subject to the thermal shock at the upper surface. In contrast, the TSR of the UHTC plate with simply supported edges or clamped edges around the lower surface is much better.

Key words: thermal environment, mechanical boundary condition, ultra-high temperature ceramic (UHTC), temperature-dependent material property, thermal shock resistance (TSR)

中图分类号:

O343.6

Tianbao CHENG;Weiguo LI;Yushan SHI;Wei LU;Daining FANG. Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics[J]. Applied Mathematics and Mechanics (English Edition), 2015, 36(2): 201-210.

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Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics

Effects of mechanical boundary conditions on thermal shock resistance of ultra-high temperature ceramics

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