Hibrit girintili ökzetik yapıların en-boy oranı karşılaştırma analizi

Abstract

Bu çalışmada, farklı açılara sahip girintili ökzetik geometrisine sahip on altı model tasarlanmıştır. Sonlu elemanlar yöntemi kullanılarak, tasarlanan modellere yatay eksende 2 mm yer değiştirme uygulanmış ve uygulanan yatay yer değiştirmeden kaynaklanan düşey yer değiştirme değerleri belirlenerek karşılaştırılmıştır. Buna göre, 2 mm yatay yer değiştirmede, düşey gerinim/yatay gerinim oranı en yüksek %2.51, en düşük %2.01 olarak bulunmuştur. Ayrıca, modelde oluşan karşılaştırmalı gerilmelerin, tasarımdaki artan açılarla birlikte arttığı da gözlemlenmiştir.

Keywords

• Meta-malzemeler
• geometrik tasarım
• öksetikler
• esneklik
• sonlu eleman metodu

Aspect ratio comparison analysis of hybrid re-entrant auxetic structures

Abstract

In this study, sixteen models are designed with reentrant honeycomb geometry with different angles. Using the finite element method (FEM), a displacement on the horizontal axis is applied to the designed models and the vertical displacement values resulting from the applied horizontal displacement are determined and compared. Accordingly, with a horizontal displacement of 2 mm, the ratio of vertical strain to horizontal strain is found to be 2.51%, which is the highest, and 2.01%, which is the lowest. It is observed that the equivalent stresses increase with increasing angles in the design.

Keywords

• Metamaterials
• geometrical design
• auxetics
• flexibility
• finite element method

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