接着剤の硬化収縮による内部応力を対象とした数値解析手法

概要

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Internal stresses of constant-temperature cured adhesives (CTCA) decrease the reliability of the bonded structures. Since the internal stresses of CTCA have been neglected by researchers, a numerical analysis method has not been established to date. In this paper, a numerical analysis method for the internal stresses of CTCA was examined. Internal stresses were measured by the bimetal method and the deformation of the bimetal-curing time curve was the object of the numerical analysis. In this paper, the error was to be cleared in case the mechanical properties of solid, i. e. , elastic modulus of bulk and total linear shrinkage ratio of adhesives, were used. Furthermore, the numerical analysis method was examined taking into consideration the exchange of mechanical properties of adhesives during the curing process. Exchange of volume shrinkage ratio and shear modulus were measured by a dilatometer and a rheometer, respectively. The piecewise linear analysis method was applied to the beam theory to take into consideration the exchange of mechanical properties. Good agreement was found between the calculated and experimental results
一般社団法人日本機械学会の論文
1994-11-25