2447 曲げモーメントを受ける段付き重ね合わせ接着継手の三次元FEM解析と強度推定(G03-11 解析・計算技術,G03 材料力学)

概要

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The stress distributions and stress variations in stepped-lap adhesive joints of similar adherends subjected to static and impact in-plane bending moments are analyzed in elastic deformation ranges using three-dimensional finite element method (FEM). The effect of adhesive Young's modulus, the adhesive thickness, and the number of the steps of adherends on the stress distributions and stress variations at the interface were examined under both static and impact loadings. As the results, the maximum value of the maximum principle stress was increased as the adhesive Young's modulus and the number of the steps of adherends were decreased, while the adhesive thickness increased for the static loadings. The maximum value of the maximum principle stress was increased as the adhesive Young's modulus and the number of the steps of adherends were increased, while the adhesive thickness decreased for the impact loadings. In addition, the experiments to measure the strains of the joints subjected to static loadings were carried out using strain gauges. A fairly good agreement was found between the numerical and the measured results concerning the strains. The strength estimation of stepped-lap adhesive joints under static bending moment was carried out in elasto-plastic deformation ranges. The estimated results were in fairly good agreement with the experimental results.
社団法人日本機械学会の論文
2007-09-07