メカニカルシール超硬合金しゅう動リングのき裂発生機構 : 第3報, 熱弾塑性解析による諸因子の評価

概要

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The effects of factors affecting the occurrence of numerous shallow radial cracks, which are observed on the rubbing surface of cemented carbide rings composing mechanical seals, are studied by thermal and elastic plastic analyses taking into account the thermal stresses. The numerical results obtained have shown that thermocracking mechanism can not explain why cracks run perpendicular to the direction of sliding and that the dynamical action of a high contact stress together with a high tangential force plays a very important role in the occurrence of cracks. The effects of sliding speed and thermo-mechanical properties of cemented carbide rings on the generation of tensile stress are also investigated in the light of the comparison with the effect of the contact stress.
社団法人日本機械学会の論文
1999-03-25