2D permeability tensor identification of fibrous reinforcements for RTM using an inverse method
2D permeability tensor identification of fibrous reinforcements for RTM using an inverse method
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DOI：
10.1016/j.compositesa.2008.05.019
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发表时间：
2008-09
影响因子：
8.7
通讯作者：
G. Morren;S. Bossuyt;H. Sol
中科院分区：
文献类型：
--
作者：
G. Morren;S. Bossuyt;H. Sol
提出了一种快速且鲁棒的混合数值/实验技术，该技术允许通过单个实验确定树脂传递模塑过程模拟所需的平面内渗透率张量的所有分量。该技术将高度自动化的“PIERS”（利用电阻传感器识别渗透率）中央注入钻机与定制的实验数值模拟相结合，并使用迭代逆方法识别模拟与实验相一致的渗透率值。结果表明，对于非近似各向同性的钢筋，与只在注入流体到达钢筋边缘之前有效的模型的逆方法相比，逆方法中的数值模拟显著提高了参数识别的精度。
A fast and robust mixed numerical/experimental technique is presented, that allows with a single experiment to determine all components of the in-plane permeability tensor, needed for process simulation of resin transfer molding. This technique combines the highly automated “PIERS” (permeability identification using electrical resistance sensors) central injection rig with a customized numerical simulation of the experiment, and uses an iterative inverse method to identify permeability values for which the simulation agrees with the experiment. It is shown that, for reinforcements that are not approximately isotropic, the numerical simulation in the inverse method significantly improves the precision of the parameter identification, compared to inverse methods with models that are valid only until the injected fluid reaches an edge of the reinforcement.