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首页> 外文会议>International Symposium on Intensive Loading and Its Effects >Modified Quartet Structure Generation Set Reconstruction of Finite Element Model for Co-continuous Ceramic Composites
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Modified Quartet Structure Generation Set Reconstruction of Finite Element Model for Co-continuous Ceramic Composites

机译：用于共连陶瓷复合材料的有限元模型的改进的四重奏结构生成集重构

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摘要

Co-continuous ceramic composites have a complicated topology structure which makes it much more difficult for finite element model reconstruction. In this paper, the two-dimensional co-continuous ceramic composites finite element model is reconstructed by a modified quartet structure generation set method which modified the generation parameters based on quartet structure generation set (QSGS) method, and a numerical simulation at high strain rate is accomplished. The content mainly contains: (1) The distribution features of metal phase and ceramic phase of real co-continuous ceramic composites SEM image is calculated by mathematical statistics to determine the parameters that control the reconstruction such as volume fraction, core distribution probability and directional growth probability; (2) Two phase volume fraction and 2-point correlation function of the reconstructed finite element model is calculated as the quality assessment parameters, which verify the reconstructed finite element model are in allowable error range compared with the real SEM image; (3) Numerical simulation at high strain rate is carried out using the reconstructed finite element model. The failure behavior of co-continuous ceramic composites at high strain rate is analyzed, validates the reconstructed finite element model meets the requirements of numerical calculation.
机译：共连续陶瓷复合材料具有复杂的拓扑结构，这使得有限元模型重建更加困难。在本文中，通过修改的四重奏结构生成集合方法重建了二维共连陶瓷复合材料有限元模型，其基于四重体结构生成集（QSGS）方法修改生成参数，以及高应变率的数值模拟完成了。该内容主要包含：（1）通过数学统计计算实际共连陶瓷复合材料SEM图像的金属相和陶瓷相的分布特征，以确定控制重建，如体积分数，核心分布概率和方向增长的参数可能性; （2）重建有限元模型的两个相体积分数和2点相关函数作为质量评估参数计算，验证重建的有限元模型与真实的SEM图像相比允许误差范围; （3）使用重建的有限元模型进行高应变速率的数值模拟。分析了在高应变速率下共连续陶瓷复合材料的故障行为，验证了重建的有限元模型满足数值计算的要求。

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