Modern materials of nuclear installations are highly resistant to general corrosion but they are very sensitive to specific types of electrochemical corrosion, e.g., pitting formation. The presence of geometrical imperfections (e.g., a corrosion pit) may cause serious damage and significantly decrease the strength and durability of mechanical structures. This paper studies the stress distribution caused by a single corrosion pit on the outer surface of a linearly elastic thick spherical shell. The influence of various geometrical parameters of the problem on stress concentration is investigated. Two stress concentration factors are introduced to analyze the stress increase caused by the presence of the pit. Calculations are performed using ANSYS.
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机译:万向节密封件-具有细长的球形密封表面,该表面可滑入较厚的外表面,以提供防尘密封等。AB DE4036616A两根轴(1、2)通过万向节连接,一根轴(2)装有一个球面联轴器(3)在第二轴的外球面内移动。第二根轴具有细长的球形密封表面(8),该表面在较厚的外表面内滑动。相互交叉的球形密封表面提供了有限的灰尘等进入的密封。密封唇(8a,9)密封了壳体的作用。优势-改进了对万向接头的保护,将砂砾损坏的风险降至最低。 AN 91194459 TI用于转速测量的脉冲环-倾斜的计数器部分沿环的外围压出,与传感器单元相互作用以确定速度和方向