Lateral Compression Tests and Tensile Tests for Ceramic Tubes.
Lateral Compression Tests and Tensile Tests for Ceramic Tubes.
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陶瓷管的横向压缩测试和拉伸测试。
DOI：
10.1299/kikaia.61.1797
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Y. Yabe
中科院分区：
文献类型：
--
作者：
Hidetoshi Kobayashi;M. Daimaruya;O. Shiozaki;Y. Yabe
在这项研究中，侧压缩试验和拉伸试验的莫来石圆管进行了静态速率。对陶瓷管侧向压缩变形进行了理论和数值分析。在考虑陶瓷圆管的侧向压缩变形时，考虑了平板与管面的弹性接触以及管曲壁的弯曲。陶瓷管的杨氏模量从横向压缩试验得到的同意，以及从拉伸试验得到的。通过有限元分析，得到了一个简单的公式，可以方便地计算侧压试验中的断裂应力。通过与二维解析解的比较，发现该方程适用于h/Do=1/3（Do为外径，h为圆管壁厚）以下的厚壁管的侧压试验。陶瓷管在侧向压缩时的断裂应力约为拉伸强度的1.5倍。
In this study, lateral compression tests and tensile tests for Mullite circular tubes were carried out at static rates. Theoretical and numerical analyses for the deformation of ceramic tubes in lateral compression were also performed. In considering the deformation of ceramic circular tubes in lateral compression, elastic contact with flat plate and tube surface was taken into account as well as the bending of the curved wall of the tubes. Young's modulus of ceramic tubes obtained from lateral compression tests agreed well with that obtained from tensile tests. A simple equation which enables easy calculation of the fracture stress in lateral compression tests was obtained using FEM analysis. From the comparison with the two-dimensional analytical solution, it was found that the equation was applicable to lateral compression tests of relatively thick-walled tubes up to h/Do=1/3 (Do : outer diameter, h : wall thickness of circular tubes). It was also found that the fracture stress in lateral compression was about 1.5 times greater than the tensile strength of ceramic tubes.