STRESS-STRAIN RELATIONSHIPS IN RUBBER (2) EXTENSION AND COMPRESSION OF BONDED RUBBER BLOCKS

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  • ゴムの応力とひずみに関する研究　ＩＩ　　金具に接着されたゴムの応力とひずみの関係と形状関数式について
  • カナグ ニ セッチャクサレタ ゴム ノ オウリョク ト ヒズミ ノ カンケイ

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Tohara has shown that for the shapes of rubber commonly used under compression, and with bonded end faces, the compressive stress σ is given by<br>σ=G(λ-λ-2)•f(S) (2)<br>where f(S) is a shape function. When G is shear modulus, λ is compression and tension ratio, and the shape factor S defined as the ratio of one loaded area to the total force-free area.<br>Tohara used for f(S) the Hattori function(2).<br>f(S)=1+2.19S2 (squar section) f(S)=1+1.65S2 (circular section)} (2)<br>But (2) or the others function did not fit for experimental data, so that this paper study's function is fomula (3) by factor α and β.<br>f3(S)=1+αSβ (3)<br>Bonded end faces rubber under extention, stress-strain relation did not fit for equation (1) and (3), so that my former report function (4) apply to this paper.<br>σ=2G(1-λ-1.5)•f3(S) (4)<br>note, 1. at compression (λ-λ-2)_??_2(1-λ-1.5)<br>2. example α and β for (3)<br>NR pure gum rubber (squar section) λ=2.2, β=π/2<br>NR HS65°(circular section) λ=1.5, β=π/2

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 56 (6), 369-381, 1983

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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