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首页> 外文期刊>Key Engineering Materials >Evaluation of Elastic and Creep Properties of Perforated Materials by Finite Element Analysis Imposing Periodic Boundary Conditions
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Evaluation of Elastic and Creep Properties of Perforated Materials by Finite Element Analysis Imposing Periodic Boundary Conditions

机译：施加周期性边界条件的有限元分析评估多孔材料的弹性和蠕变性能

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摘要

In the analysis of materials containing regularly placed in-homogeneities, the evaluation of homogenized properties is an important issue. Common procedure for the homogenization is to define a unit cell, load it somehow, and investigate its structural response. A periodic variation of strain appears when the periodically heterogeneous material is under uniform macro-stress, and therefore, the implementation of this characteristic behavior would be essential to the material characterization based on a unit cell analysis. With the method proposed here, conventional finite element analysis tools can be used with no modification, and it is applicable to the skew-arrayed in-homogeneity problems. The orthotropic elastic and creep properties of materials with voids are examined, and the accuracy and effectiveness are demonstrated.
机译：在分析含有规则均一性的材料时，均质特性的评估是一个重要的问题。均质化的常见过程是定义一个晶胞，以某种方式加载它，并研究其结构响应。当周期性异质材料处于均匀的宏观应力下时，会出现应变的周期性变化，因此，此特征行为的实现对于基于晶胞分析的材料表征至关重要。通过此处提出的方法，可以使用传统的有限元分析工具，而无需进行任何修改，并且它适用于倾斜排列的均匀性问题。研究了具有空隙的材料的正交各向异性弹性和蠕变特性，并证明了其准确性和有效性。

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