Two-Dimensional Thermal Stress Analysis of Butt Adhesive Joints

概要

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Thermal stress distribution in a butt adhesive joint composed of two finite thin plates, of which both end surfaces are kept at a constant temperature and the other surfaces at a different temperature, is analyzed using the two-dimensional theory of elasticity. In the case where the joint is made of similar adherends and kept at the same high temperature at both free end surfaces of the joint, it is seen that the maximum tensile stress occurs at the end of the interface between the adherend and the adhesive, and compressive stress around the center of the interface. The effects of the ratios of the coefficient of thermal expansion, Young's modulus and the thickness of the adherend to those of the adhesive on the thermal stress distributions are obtained by numerical calculations. Moreover, in the case where the adherbnds are kept at different temperatures at each free end surface of the joint, the thermal stress distributions at each interface are obtained numerically. For verification, the thermal strain distribution near the interface was measured using strain gauges, and also, the photoelastic experiment was carried out on the joint where an epoxy resin plate was used as an adhesive. The analytical results were satisfactorily consistent with the experimental ones.
一般社団法人日本機械学会の論文
1992-04-15