衝撃引張り荷重を受ける中空円筒突合せ接着継手の応力応答解析と強度  [in Japanese] Finite Element Stress Response Analysis and Strength of Butt Adhesive Joints of Similar Hollow Cylinders Subjected to Impact Tensile Loadings  [in Japanese]

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Abstract

衝撃引張り荷重を受ける同種材料の中空円筒突合せ接着継手の応力伝播状況を,有限要素コードDYNA3Dを用いて有限要素解析した。上部被着体端部を全方向に拘束し,下部被着体端部に取り付けられた連結棒を有する円形フランジに重錘を自由落下させることにより衝撃引張り荷重を発生させた。その結果,下部接着界面外周(r=7.5,z=-0.05)で最大主応力の値が最大となった。また,被 着体と接着剤の縦弾性係数比E1/E2および接着層厚さ2h2の影響について調べ,縦弾性係数比E1/E2が大きくなるほど,すなわち接着剤の縦弾性係数E2が小さくなるほど,接着層厚さ2h2が大きくなるほど最大主応力の最大値が小さくなった。さらに,有限要紫コードMARCを用い,静的荷重を受ける場合についても解析を行い,衝撃荷重作用時の接着界而応力特性を比較したところ両者の間では異なった特性を示した。ひずみ応答に関する実験を行い,実験結果と解析結果はかなりよく一致した。さらに衝撃および静的荷重下での継手強度についても計算と実験の両面より検討し.FEM計算により強度を推定できることを示した。

The stress wave propagation in butt adhesive joints of similar hollow cylinders subjected to impact tensile loadings are analyzed in elastic and elasto-plastic deformation ranges using a finite-element method. The impact loading is applied to the joint by dropping a weight. The upper end of the upper adherend is fixed and the lower adherend of which the lower end is connected to a guide bar is subjected to the impact loading. The FEM code employed is DYNA3D. The effect of the adhesive thickness and Young's modulus of the adhesive on the stress wave propagation at the interfaces are examined. In addition, the characteristics of the joints subjected to the impact loadings are compared with those of the joints under static loadings, and the strengths of the joints under static and impact loadings are estimated by using the interface stress distributions. It is found that the maximum value of the maximum principal stress occurs at the outside edge of the interface of the lower adherend to which the impact loading is applied. The maximum value of the maximum principal stress s1 increases as Young's modulus of the adhesive increases when the joints are subjected to impact loadings. It is found that the characteristics of the joints subjected to impact loadings are opposite to those subjected to static loadings. In addition, experiments were carried out to measure the strain response of the butt adhesive joints subjected to impact and static tensile loadings using strain gauges and the joint strength was also measured. Fairy good agreements are observed between the numerical and the measured results concerning the strain responses and the joint strengths.

Journal

  • Journal of The Adhesion Society of Japan

    Journal of The Adhesion Society of Japan 38(7), 244-254, 2002-07-01

    The Adhesion Society of Japan

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Codes

  • NII Article ID (NAID)
    10008834852
  • NII NACSIS-CAT ID (NCID)
    AN10341672
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09164812
  • NDL Article ID
    6207382
  • NDL Source Classification
    ZP16(科学技術--化学・化学工業--高分子化学・高分子化学工業)
  • NDL Call No.
    Z17-134
  • Data Source
    CJP  NDL  J-STAGE 
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