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Effect of thermal stress on crack growth in inhomogeneous cylindrical superconductor

机译:热应力对不均匀圆柱超导体裂纹扩展的影响

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摘要

The effect of thermal stress on the growth of central cracks in inhomogeneous cylindrical superconductors is investigated assuming that the material properties vary linearly with the radial coordinate and temperature differences. General expressions for the temperature distribution and thermal stress in terms of a Bessel equation and the plane strain approach are derived. The results indicate that the distributions and variations in the radial and hoop thermal stresses in an inhomogeneous superconductor differ from those in homogeneous superconductors. However, thermal stress affects the crack growth similarly in both superconductor types. The thermal- stress analysis should be useful for the crack growth prediction regarding inhomogeneous superconductors.
机译:假设材料特性随径向坐标和温度差线性变化,研究了热应力对不均匀圆柱超导体中心裂纹扩展的影响。根据贝塞尔方程和平面应变方法,得出了温度分布和热应力的一般表达式。结果表明,非均质超导体中径向和环向热应力的分布和变化与均质超导体中的分布和变化不同。但是,在两种超导体类型中,热应力都会类似地影响裂纹扩展。热应力分析对于非均质超导体的裂纹扩展预测应该是有用的。

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