Modelling the damage of porous ceramics under internal pressure

Ioannis Doltsinis; Rainer Dattke

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Modelling the damage of porous ceramics under internal pressure

机译：模拟内部压力下多孔陶瓷的损坏

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A numerical model is presented for microcrack formulation and damage evolution in brittle porous solids under internal fluid pressure. The stress estimation in the microstrucutre relies on analytical solutions for elementary cavity geometries. Fracturing is allowed on the grid of grain boundaries, and an energy criterion is employed to decide on the survival or failure of the individual grain interfaces. Particular attention is paid to the fracture of grain interfaces adjacent to pores, which is most likely to occur under the considered conditions.

机译：提出了一种数值模型，用于内部流体压力下脆性多孔固体中微裂纹的形成和损伤演化。微观结构中的应力估计依赖于基本型腔几何形状的解析解。允许在晶界的网格上进行压裂，并且采用能量标准来确定各个晶界的存活或失败。特别注意邻近孔的晶粒界面的断裂，这种断裂最有可能在考虑的条件下发生。

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来源
《Computer Methods in Applied Mechanics and Engineering》 |2001年第2期|p.29-46|共18页
作者
Ioannis Doltsinis; Rainer Dattke;
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作者单位

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类自动化基础理论;工程基础科学;
关键词
Micromechanics; Brittle porous material; Fluid pressure; Numerical modelling;

机译：微力学;脆性多孔材料;流体压力;数值模拟;

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Modelling the damage of porous ceramics under internal pressure

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