Material Model of Polyurethane Rubber under Cyclic Compression

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  • KIKUCHI Ukyo
    Advanced Course，Tokyo Metropolitan College of Industrial Technology
  • INAMURA Eijiro
    Tokyo Metropolitan College of Industrial Technology

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  • 繰返し圧縮におけるウレタンゴムの材料モデル

Abstract

<p>In a previous study，a material model was proposed in relation to viscoelasticity based on stress-strain diagrams of urethane rubber under repeated compression．However，when the stress-strain diagram was reviewed，it was found that a hysteresis loop was drawn，but it did not depend on strain rate．Based on the experimental results，we propose a material model of urethane rubber by dividing the relationship between stress and strain into terms for hyperelasticity and internal friction terms．From the results of cyclic compression tests，values related to hyperelasticity were subtracted from the results to clarify the relationship to internal friction，and the model equation was discussed．</p>

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