由试验结果和理论分析得到直接荷电法的机理是尖端效应，电晕荷电法的机理为碰撞荷电。
Experimental results and theoretical work show that the mechanisms of the direct charging and the corona charging are respectively the tip effect and collision effect.
根据差异界面、扰动效应和尖端效应等原则并结合具体的边界条件，判别目标体的存在与否以及存在的大致空间形式。
Then to distinguish that there are or not objectives and their approximate space shape is based on some principles such as differential interface, disturbed effect, point response, etc.
分析与计算结果表明，黏性效应是扩展裂纹尖端场的一个重要因素。
The analytical and computational results indicate that the viscosity effect is an important factor in propagating crack-tip fields.
给出金属板在高密度电流脉冲下裂纹尖端电流集肤效应和急剧发热升温解析的边界元法。
Concerns BEM (boundary element method) of electric current concentrating effect and temperature rising analysis at the crack tip with high density electric pulse.
因此，在研究裂纹尖端的奇异场时，材料的粘性效应是一个重要的因素。
As a consequence, the viscosity of material is an important factor in the study of singular field of the crack-tip.
而裂纹板经复合材料补片胶接修补后，平行于裂纹方向的拉压应力对裂纹尖端的应力强度因子具有耦合效应，并且这种耦合效应的大小与补片的铺层含量有很大的关系。
While with a composite patch, there exists coupling effect between the normal stress parallel to crack and the SIF, and the coupling effect is significantly dependent on ply orientation of the patch.
分析结果表明，引起针尖尺寸效应的主要原因是由于压头尖端曲率半径的存在导致对压入过程中接触深度的估计过低。
The simulation results indicate that the tip size effect in nanoindentaion is caused mainly by the underestimate of the contact area due to the indenter bluntness.
以混凝土单轴拉压损伤为基础，给出了单元弹性损伤本构关系，分析了裂纹尖端损伤微裂区尺寸，定义了有效应力强度因子，给出了I型裂纹损伤断裂判据。
Mesoscopic damage size on the top of crack is analysed, the effective stress strength factor is defined, the mode I crack damage fracture criteria is presented.
研究表明：当共线裂纹间距小于裂纹长度时，裂纹尖端场存在显著的干涉效应；
It is revealed that when the crack distance is less than crack length, the crack-tip fields will interfere each other seriously.
为了研究粘性效应作用下的扩展裂纹尖端场，假设扩展裂纹尖端的人工粘性系数与塑性应变率的幂次成反比，推导出理想弹塑性材料的一种率敏感型本构关系。
The strain fields in damage zone around crack-tip are measured for different strain hardening exponent material specimens with double edge cracks using digital speckle correlation technique.
为了研究粘性效应作用下的扩展裂纹尖端场，假设扩展裂纹尖端的人工粘性系数与塑性应变率的幂次成反比，推导出理想弹塑性材料的一种率敏感型本构关系。
The strain fields in damage zone around crack-tip are measured for different strain hardening exponent material specimens with double edge cracks using digital speckle correlation technique.
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