| 含半椭圆型表面缺陷陶瓷材料的热冲击阻力分析 |
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| 引用本文： | 常冬梅,王保林,李金娥.含半椭圆型表面缺陷陶瓷材料的热冲击阻力分析[J].固体力学学报,2011(Z1). |
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| 作者姓名： | 常冬梅 王保林 李金娥 |
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| 作者单位： | 哈尔滨工业大学深圳研究生院; |
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| 基金项目： | 国家自然科学基金(10972067,11172081)资助项目 |
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| 摘 要： | 本文研究一个有半椭圆型表面缺陷的陶瓷材料板的热冲击阻力问题.通过多项式形式的应力和几何形状因子得到半椭圆型表面裂纹尖端的热应力强度因子.以蓝宝石陶瓷板为例,基于最大应力准则和断裂韧性准则分析其热冲击阻力行为,并由这两个准则得到其强度计算中真实的热冲击阻力曲线.
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| 关 键 词： | 热冲击 陶瓷 强度分析 断裂韧性 |
THERMAL SHOCK RESISTANCE ANALYSIS OF CERAMIC PLATE WITH SEMI-ELLIPTICAL SURFACE DEFECT |
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| Dongmei Chang Baolin Wang Jin'e Li.THERMAL SHOCK RESISTANCE ANALYSIS OF CERAMIC PLATE WITH SEMI-ELLIPTICAL SURFACE DEFECT[J].Acta Mechnica Solida Sinica,2011(Z1). |
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| Authors: | Dongmei Chang Baolin Wang Jin'e Li |
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| Institution: | Dongmei Chang Baolin Wang Jin'e Li(Graduate School at Shenzhen,Harbin Institute of Technology,Harbin,150001) |
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| Abstract: | This paper studies the thermal shock resistance and strength behavior of a ceramic plate with a semi-elliptical surface crack.The thermal stress intensity factor is obtained by the thermal stress distribution which is fitted to the polynomial form through a geometric shape factor.Based on the maximum stress criterion and the fracture toughness criterion,the thermal shock resistance of the ceramic plate is investigated and the thermal shock resistance curve is obtained and graphically displayed.The proposed ... |
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| Keywords: | thermal shock ceramics strength analysis fracture toughness |
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