首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
中等气孔率多孔陶瓷在受压过程中的断裂行为
作者:郎莹1 2 赵佳敏3 汪长安1 刘彬3 
单位:1. 景德镇陶瓷学院 国家日用及建筑陶瓷工程技术研究中心 江西 景德镇 3330011 2. 清华大学材料学院 新型陶瓷与精细工艺国家重点实验室 北京100084  3. 清华大学航空航天学院固体力学研究所 北京100084 
关键词:压缩强度 多孔陶瓷 断裂 
分类号:TM285
出版年,卷(期):页码:2014,42(12):0-0
DOI:
摘要:

采用凝胶注模工艺制备中等气孔率、气孔均匀分布的YSZ多孔陶瓷材料,并对其进行压缩强度测试,通过研究不同气孔率材料的应力–应变曲线以及断裂后的碎片形貌,分析了材料的断裂行为。结果表明,在气孔率为60%~70%时,材料断裂碎片和应力–应变曲线难以用现有理论解释。在分析锥体形成条件以及孔隙率渐进变化基础上,从杆件模型出发,提出了锥体断裂模型,并讨论了其形成条件。

how to cheat read wife cheat story
online click open
why married men cheat on their wives women cheat on men
cialis coupon cialis coupon cialis coupon

 Porous YSZ ceramics with evenly distributed pores were prepared by a gel-casting method using tert-butyl alcohol (or TBA) as a solvent. The samples with different porosities were examined by compression, and the collapse behaviors were analyzed based on the stress-strain curves and the crashed morphology of the samples. The results show that it is difficult to clarify the collapse process of the samples with the porosity of 60%–70% in the transition stage from high porosity to low porosity with the existing theories. A mechanical model was proposed based on the analysis of the collapse behavior at various porosities. In addition, the necessary condition of the cone collapse process was also discussed. 

基金项目:
基金项目:国家自然科学基金(51172119)资助项目。
作者简介:
第一作者:郎 莹(1977—),男,博士。 通信作者:汪长安(1969—),男,博士,教授。
married cheaters cheat on my wife click
why do wife cheat on husband why men cheat how to cheat wife
参考文献:

参考文献:
[1] 刘卫, 黎阳, 陈璐. 聚碳硅烷低温制备碳化硅泡沫陶瓷[J]. 硅酸盐学报, 2011, 39(11):1763-1767.
LIU Wei, LI Yang, CHEN Lu. J Chin Ceram Soc, 2011, 39(2):1763-1767.
[2] 罗凌虹, 汪兴华, 吴也凡, 等. 高孔隙率YSZ-高致密YSZ薄膜共烧复合体的制备[J]. 硅酸盐学报, 2011, 39(2):256-261.
LUO Linhong, WANG Xinghua, WU Yefan, etc. J Chin Ceram Soc, 2011, 39(2):256-261.
[3] ORBULOV I N, MÁJLINGER K. Description of the compressive response of metal matrix syntactic foams[J]. Mater Des, 2013, 49:1–9.
[4] GRIFFITH A A. The theory of rupture[C]// Proceedings of the First International Congress of Applied Mechanics. Delft,1924: 55-63.
[5] MIGUEL A A, TALUKDAR, P; RAY, S, Detailed and simplified models for evaluation of effective thermal conductivity of open-cell porous foams at high temperatures in presence of thermal radiation[J], Int J Heat Mass Transf, 2014, 68: 612-624.
[6] GIBSON L J, ASHBY M F. Cellular solids structure and properties[M].Cambridge: Cambridge Solid State Science Series, 1997.
[7] GONG L, KYRIAKIDES S, Compressive response of open cell foams Part II: Initiation and evolution of crushing[J]. Int J Solids Struct, 2005, 42: 1381–1399.
[8] ASHBY M F, SAMMIS C G. The damage mechanics of brittle solids in compression[J]. Pure Appl Geophys, 1990, 133 (3):489–521.
[9] DENG Z Y, SHE J, Inagaki Y, et al. Reinforcement by crack-tip blunting in porous ceramics[J]. J Eur Ceram Soc, 2004, 24: 2055–2059.
[10] RICE R W, Porosity of ceramics[M]. Marcel Dekker Inc, New York, 1998.
[11] RICE R W. Evaluating porosity parameters for porosity-property relations[J]. J Am Ceram Soc, 2002, 76(7): 1801−1808.
[12] RICE R W. Comparison of physical property porosity behaviour with minimum solid area models[J]. J Mater Sci, 1996, 31(6): 1509−1528.
[13] KNUDSEN F P. Dependence of mechanical strength of brittle poly-crystalline specimens on porosity and grain size[J]. J Am Ceram Soc, 1959, 42(8): 376−387.
[14] RICE R W. Evaluation and extension of physical property-porosity models based on minimum solid area[J]. J Mater Sci, 1996, 39(1): 102−118.
[15] RUAN D, LU G, WANG B, et al. In-plane dynamic crushing of honeycombs: a finit e element study[ J] . Int J Impact Eng, 2003, 28(2) : 161-182.
[16] TAN P J, REID S R, HARRIGAN J J, et al. Dynamic compressive strength properties of aluminium foams: / Shock theory and comparison with experimental data and numerical models[J] . J Physics Solids, 2005, 53: 2206-2230.
[17] ZHENG Zhijun, YU Jilin, LI Jianrong. Dynamic crushing of 2D cellular structures: A finite element study[J] Int J Impact Eng, 2005, 32: 650-664.
[18] LI K, GAO L X, WANG J. Dynamic crushing behavior of honeycomb structures with irregular cell shapes and non-uniform cell wall thickness[J] . Intl J Solids Struct, 2007, 44: 5003-5026.

married cheaters how many women cheat click
redirect how to cheat why women cheat on men they love
how to catch a cheater redirect go
my husband cheated on me men who have affairs women who cheat on husband
why married men cheat on their wives women cheat on men
bystolic copay card click bystolic coupon voucher
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com