リンクル・クリース解析における初期不整と要素分割の影響

DOI Web Site 参考文献17件 オープンアクセス
  • 星 亮吾
    名古屋大学大学院工学研究科機械システム工学専攻
  • 三好 宏明
    名古屋大学大学院工学研究科機械システム工学専攻
  • 松原 成志朗
    名古屋大学大学院工学研究科機械システム工学専攻
  • 奥村 大
    名古屋大学大学院工学研究科機械システム工学専攻

書誌事項

タイトル別名
  • Effects of initial imperfection and mesh resolution on wrinkle and crease analyses

抄録

<p>This study investigates the effects of initial imperfection and mesh resolution on the wrinkling and creasing. Finite element analyses are conducted to simulate compression behaviors of an incompressible Neo-Hookean elastic plane with a V-shaped notch as initial imperfection, so that the occurrences and evolutions of wrinkle and crease are evaluated quantitatively. As a result, it is demonstrated that the origins of wrinkle and crease can be determined by the overall and local strains even for the introduction of a V-shaped notch. Further, we illustrate that the converged specific local strain with respect to the increase of mesh resolution almost coincides with the condition of the occurrence of wrinkle (i.e., εw = 0.456) when the depth of a V-shaped notch is sufficiently small. We also show that the sizes of wrinkle and crease do not converge due to strain localization around a V-shaped notch. In the investigation of pattern evolutions about initial imperfection, we illustrate that two kinds of pattern evolution can be comprehensively discussed by varying the depth of a V-shaped notch, so that the condition of the occurrence of crease can be organized by the sharpness of a V-shaped notch.</p>

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