内部流体加熱を受ける接着-ボルト併用管フランジ締結体の軸対称三次元熱応力解析

概要

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Thermal stress distribution of adhesively bonded pipe flange connections subjected to heat conduction in steady state are analyzed by using the thermoelastic displacement potential and Michell's stress functions based on the axisymmetrical theory of elasticity. In the analysis, pipe flanges, hubs of pipe flange and an adhesive are replaced by finite hollow cylinders, respectively. In the numerical calculations, the effects of the ratios of linear thermal expansion coefficients, Young's moduli between the pipe flange and the adhesive layer and the adhesive thickness on the stress distribution at the interface between the flange and the adhesive layer are examined. As a result, it is seen that the thermal stress (compressive) at the inner and the outer surfaces of the adhesive layer increases with a decrease of Young's moduli ratio, the linear thermal expansion coefficient ratio and the adhesive thickness. In addition, stress analysis by using FEM (Finite Element Method) was also carried out. Fairly good agreement is seen between the numerical and FEM results. The characteristics are compared with those of the connections with gaskets. It is found that the stress at hub of the joint with adhesive is smaller than that of the joint with gasket.
社団法人日本機械学会の論文
1999-11-25