Simple Modelling and Strength Evaluation Methods for Bolt Joints Using Shell Elements and Beam Elements

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  • シェル要素とビーム要素を用いたボルト締結部の簡易モデル化手法と強度評価
  • シェル要素とビーム要素を用いたボルト締結部の簡易モデル化手法と強度評価(第2報)強度評価法
  • シェル ヨウソ ト ビーム ヨウソ オ モチイタ ボルト テイケツブ ノ カンイ モデルカ シュホウ ト キョウド ヒョウカ ダイ 2ホウ キョウド ヒョウカホウ
  • 第2報, 強度評価法
  • 2nd Report, Strength Evaluation Method

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Abstract

The stiffness of an engineering structure with joint depends not only on the materials and dimensions of the structure but also on the stiffness of the fasteners that connect its components. To evaluate the mechanical behavior of a complex structure with bolted joints, we first developed a simple finite element (FE) modeling technique that was simplified by using shell and beam elements and accounts for the effect of the stiffness of jointed plates and bolts. In evaluating the mechanical behavior, we also need a method for evaluating the strength of bolt joints from the results of FE analysis. In this study, we have developed a strength evaluation method for the beam forces of FE analysis by considering the mechanics of bolt joints. This method can be used to evaluate static failure and fatigue failure of bolts and slippage on clamped plates and bearing surfaces. We can easily evaluate the strength of bolt joints of industrial products with many bolted joints by using this method.

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