Effective Elastic Modulus for Composites Using Unit Cell Models.

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  • ユニットセルモデルを用いた複合材料の平均的縦弾性係数
  • ユニットセル モデル オ モチイタ フクゴウ ザイリョウ ノ ヘイキンテキ タテ ダンセイ ケイスウ

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Unit cell models have been used to investigate mechanical properties of composite materials assuming periodically arrangement of inclusions. It is desirable to clarify the geometrical parameters controlling the mechanical properties of composites because they usually contain randomly distributed particulate. In this paper, therefore, the effective elastic modulus in tension is considered using unit cell models with varying the shape and arrangement of inclusions. In the first, the projected area fraction and volume fraction of inclusions are found to be two major parameters controlling the effective Young's modulus of 3 D array of inclusions. Next, through the comparison between the results of 3 D and 2 D array of inclusions it is found that the elastic moduli of 2 D and 3 D arrangements of inclusions are almost equivalent when both arrangements have the same projected area and volume fractions of inclusions.

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