Relaxation Modulus of Soft Elastic Membrane

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  • 軟らかい弾性体膜の緩和弾性率
  • ヤワラカイ ダンセイタイ マク ノ カンワ ダンセイリツ

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Characteristics of membranes in biological structures, such as these of the internal organs of the living organisms, blood vessels, and cuticle membranes in foods, have recently attracted interest. Many of these objects exhibit the stress relaxation behavior of decreasing stress over time with constant deformation. Herein, we report a theoretical analysis of Young's modulus when an indenter consisting of a planar surface or a hemisphere-shaped cylindrical bar is pressed into a membrane fixed at its edges. We also measured the load over time and calculated the Young's modulus and relaxation modulus for comparison with the theory. These results confirmed the validity and convenience of this proposed theoretical analysis.

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