radius of root

By optimizing the radius of rounded corner at the root of thread and the structure of screw nut, and by changing the diameter of the root of thread, the concentrated stress was reduced, and stress distribution was improved for higher fatigue strength of the screw bolt.

通过优化螺栓螺纹根部圆角半径和螺母结构、改变螺纹根部直径的方法，缓解螺纹根部的应力集中，改善应力分布，实现提高螺栓疲劳强度的目的。

And so notice that when you are at speeds above that that you are exclusively in domain two and your terminal speed is proportional to the square root of the radius of the ball bearings.

应当注意的是，当，速度大的时候，是在，区域2中，终端速度和，这些滚珠的，√r成比例。

The computed 2 δ c values corresponded to the experimental deep notch root radius ρ 0. The relationship between fracture toughness and notch toughness depended on the relative size of effective deformed zone 2 δ c and mean free distance d B between bainites.

计算的2δc与测定的深缺口临界根部半径ρ0有对应关系。裂纹韧度与缺口韧度的关系取决于2δc与贝氏体之间的平均自由距离dB。

By studying the variation of root mean square radius with the separation energy, conditions for the existence of halo states are pointed out, especially of the proton halo states.

通过研究均方根半径随结合能变化的规律，指出了晕核态存在的条件，尤其是质子晕核态存在的条件。

Two formulas of compound shaper cutter are ob-tained. They are used to calculate the pitch pressure angle of chamfer involute and radius of circle on which chamfer involute starting point lies, and to check the tooth root slot width.

得到了复合插齿刀倒角渐开线分度圆压力角，倒角渐开线起始点所在圆半径的设计公式及插齿刀齿根槽宽的验算公式；

The stress triaxiality and equivalent plastic strain distributions at the minimum cross-section of specimens with different notch root radius are similar for such three kinds of materials.

三种材料不同缺口根半径试样最小横截面上应力三维度和等效塑性应变分布形态相似。

The influences of the root curvity radius, length, end ellipticity of a notch and the forms, materials of the sample on the failure assessment diagram were totally studied.

较全面地研究了缺口根部曲率半径、缺口长度、缺口端部椭圆率以及试样类型、材料等对失效评定图的影响。

On the choice of groove parameters, the influences of groove parameters ( such as groove depth, groove opening angle and groove root radius) on the groove bottom stress concentration extent were analyzed by finite element method.

在切口参数的选择上，本文使用有限元方法分析了切口深度、切口张开角度及切口根部圆角半径等对切口处应力集中程度的影响。