軸力を受ける異種材料中空軸重ね合わせ接着継手の応力解析

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The stress and strain distributions in adhesive lap joints composed of two dissimilar hollow shafts and subjected to an axial load are analyzed using an axisymmetric theory of elasticity, replacing each hollow shaft and the adhesive with finite hollow cylinders. In the numerical calculations, the effects of the ratio of Young's modulus of the adhesive to that of the hollow shaft, a thickness of the adhesive on the stress distributions at the interfaces between the shaft and the adhesive are clarified. In addition, the joint strength is evaluated by using the stress distribution at the interfaces. The main results are summarized as follows. (1) The stresses in the radial and circumferential directions become singular at the edge of the interface. (2) The stress near the edge of the inner interface becomes larger than that at the outer interface in case of similar hollow shafts. (3) With decrease of Young's modulus of the shaft and with increase of a thickness of the adhesive, the stress increases near the edge of the interface. For verification of the stress analysis, the axial strain distribution at the outer surface of an adhesive lap joint was measured by strain gages when it was subjected to an axial tensile load and the experimental result was fairly consistent with the numerical result. Moreover, the joint strength was tested in both adhesive lap joints of similar and dissimilar hollow shafts and was evaluated by the stress analysis.
社団法人日本機械学会の論文
1998-03-25

軸力を受ける異種材料中空軸重ね合わせ接着継手の応力解析

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