tip angle

Crack tip opening angle and its application to crack arrest in gas pipeline

裂纹尖端张开角及在输气管线止裂预测中的应用

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With the variety of the impeller tip angle from 17.6 to 23, the surface stress of the agitator blade is increased.

在叶端安放角βt从17.6°到23°时，随着叶端安放角的增加，桨叶表面的应力也在增加。

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Reynolds decreases as the linear length increases, which take a growth trend with the increasing arcing tip angle.

雷诺数随着流道直线段长度的增大而减小。

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Two parameters of the crack dynamic propagation driving force, energy release rate and crack tip opening angle, are calculated by establishing a finite element model of the crack dynamic propagation in gas pipelines and considering the attenuation of the crack propagation velocity.

通过建立输气管道裂纹动态扩展的有限元模型，并在模拟计算中考虑裂纹扩展速度的衰减，分别计算了表征动态裂纹扩展驱动力的两项参数&能量释放率和裂纹尖端张开角；

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Based on the analyses of vertical seal mechanism of fault for oil and gas and its influence factors, this paper established the relations among oil migration velocity and grain of filling materials, tip angle and mudstone content of fault zone by physical simulation experiment.

在断层垂向上封油气机理及影响因素分析的基础上，通过物理模拟建立了原油通过断裂带运移速度与断层填充物粒度、倾角和泥质含量之间的函数关系。

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On the Criterion of Combining Crack Tip Opening Angle CTOA With J& Integral

裂纹尖端张开角CTOA及其与J积分的联合判据

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An approximate formula for crack tip opening angle a_T is derived and the regularity of a_T varying with the growth of crack is found.

导出了裂尖张开角αT的近似计算公式，并测得裂纹扩展时αT的变化规律；

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Designing of external gear shaper cutter with large tip relief angle can improve the meshing quality.

滚刀、插齿刀设计成较大的修缘角，有利于提高啮合质量。

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Influence on drilling and choice of tip angle of twist drill

麻花钻尖顶角对钻削加工的影响

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The results show that, by using the surveying system described in this paper, not only the tip angle, azimuth and control face angle can be measured, but also the influences of the inducing magnetism caused by the rotary drilling string can be demolished.

结果表明，不但能在钻柱旋转过程中测出近钻头处的井斜角、方位角及控制面角，而且可以消除钻柱磁感应对测量结果的影响。

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Inflammatory pseudotumor: bilateral margin of node was upright to thoracic cavity, knife cut sign, crenate sign, long hair spine sign, tip angle, satellite node, apparently pleura reaction and apparent absorption shrinkage after anti-inflammation therapy.

炎性假瘤：病灶双侧缘垂直于胸腔、刀削征、锯齿征、长毛刺、尖角、卫星灶、胸膜反应明显，抗炎明显吸收缩小。

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In order to trace the tip angle trajectory precisely and suppress the elastic vibration in movement, a strain feedback PID controller was designed based on the theory of quadratic optimum control in frequency-domain.

设计了基于频域内二次最优控制理论的应变反馈PID控制器，实现对柔性机械臂末端运动轨迹的精确跟踪控制，同时抑制机械臂的弹性振动。

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This paper analyses that tip angle of drill bit influences on cutting capability and life of twist drill, when the material and shape of work piece is different.

分析了工件材料、形状不同时，钻尖顶角的大小对麻花钻切削性能及寿命的影响，介绍了麻花钻的钻尖顶角的选择。

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Numberal Analysis of Conjugate Curve Generated by Preshaving Hob Cutter Tip Land Angle

剃前滚刀触角所生成共轭曲线的数值分析

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The dissertation focuses on the study of tip and bottom angle steel linking light steel frames with stomach plank angles.

本文主要针对带双腹板角钢的顶底角钢连接的半刚性连接轻型钢结构框架进行分析研究。

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The method for determining the open angle in crack tip is promising.

确定裂纹尖端张开角是一种有发展前途的方法；

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The classic Pseudo-Rigid-Body Model ( PRBM) can simulate the tip locus of compliant link accurately in a certain extent, but can not simulate the tip deflection angle of the flexible link.

经典的伪刚体模型（Pseudo-Rigid-Body Model，简称PRBM）能较准确地模拟柔顺杆的末端轨迹，但不能模拟柔顺杆的末端转角。

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The Design of External Gear Shaper Cutter with Large Tip Relief Angle

大修缘角外齿轮插齿刀的设计

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The influences of ply parameters, tip diameter, impact angle on the impact damage and fatigue property of laminates are analyzed by using this 3-D progressive damage whole-process analysis method. 4.

应用本文所提出的寿命预测方法，研究了铺层方式、冲头直径和冲击角度等因素对层合板冲击损伤及冲击后疲劳性能的影响规律和损伤机理。

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