F-1506 有限要素法を用いたセラミックス系複合材料接合材の剪断強度評価試験法の解析(S54-2 耐熱材料・耐熱構造(2))(S54 耐熱材料・耐熱構造)

概要

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Reliable methods for joining ceramics, for use at elevated temperatures, are enabling technologies for the successful utilization of ceramic components. In this study, the stress distribution of a SiC/SiC composite specimen containing a butt joint consisting of reaction-formed silicon carbide tested by the asymmetrical four-point bending test was precisely analyzed by the finite element method as a means to evaluate the applicability of analytical results. In the case without the effect of the thermal residual stresses, the shear stress distribution at the interface between the base and the joint almost agreed with the analytical theory. For the case with the residual stress, however, the shear stress near the surface was very large and the possibility of an initial crack induced by the residual stress was considered. Moreover, it was found that the residual shear stress distribution near the surface was significantly affected by the joint thickness.
一般社団法人日本機械学会の論文
2001-08-22