应力集中系数
表征静载荷条件下应力集中严重程度的系数 \( K_t \) —
\begin{align} \label{eq:13901a} K_t = \frac{\textsf{Stress that is actually present at a stress concentrator}}{\textsf{Stress that would be present if no stress concentrator existed}} \end{align}
\( K_t \) 总是大于 1.0。
\( K_t \) 取决于零件的几何形状和加载方式（例如轴向加载、弯曲、扭转等）。
Stress concentration factor
A factor \( K_t \) that relates the severity of a stress concentration under static loading conditions —
\begin{align} \label{eq:13901a} K_t = \frac{\textsf{Stress that is actually present at a stress concentrator}}{\textsf{Stress that would be present if no stress concentrator existed}} \end{align}
\( K_t \) is always greater than 1.0.
\( K_t \) depends on the part geometry and the method of loading (e.g, axial, bending, torsion, etc.).