电位移

使用这些解析解和电弹性场强度的定义，得到了裂纹前沿I型、II型和III型应力强度因子以及电位移强度因子的精确表达式。

With the help of these solutions and definitions of electroelastic field intensity factors , exact expressions for mode I , mode II and mode III stress intensity factors as well as mode IV electric displacement intensity factor are obtained .

采用Schmidt方法研究条形压电材料和弹性材料的界面Ⅲ型裂纹问题，主要探讨条形压电材料和弹性材料受反平面剪应力和平面电位移作用的情形；

The problem of the mode - ⅲ interfacial crack between piezoelectric and elastic layers is analyzed using the Schmidt method . The situation that the layers are subjected to the antiplane shear stress and in-plane electric displacement is considered .

在特殊情况下，电位移矢量D仅与自由电荷分布有关；H仅与传导电流有关。

In special conditions , electric displacement vector D is in relation to free charges , magnetic field intensity H is in relation to conducting current .

考虑频散介质的电磁波传播，引入随频率变化的电位移矢量D，并对电场强度E和电位移D进行标准化。

To study propagation characteristic of radar wave in a dispersive medium , frequency - dependent flux density D was introduced , and electromagnetic field E and flux density D were norma - lized .

结果表明，在裂纹尖端应力分量和电位移分量均具有&1/2的奇异性；在正压电效应下，应力强度因子k1与电学量无关。

The results show that the stress and the electric displacement components in the crack 's top have the & 1 / 2 singularity , and the stress-intensity factor k_I is independent of electric quantity when a positive piezoelectric effect is examined .

以最大能量释放率为启裂准则，结合PZT-5H压电陶瓷材料，分析了电位移载荷对裂纹启裂的作用效果。

The effects of the electric displacement loading on the crack initiation in a PZT-5H piezoelectric ceramic media were investigated by the theory of maximum energy release rate .

电位移矢量■仅与自由电荷有关的条件

The Condition of Electric Displacement Vector Dependence Only On Free Charge

新电位移边界条件下的压电介质断裂问题

Electric Fracture Mechanics in Piezoelectric Materials on New Electric Boundary Condition

电位移矢量D与有电介质时高斯定理的理解

Understanding Electric Displacement Vector D and Gauss Theorem in Electric Medium

电位移通量和位移电流的变换关系

Conversion relationship between the electric displacement flux and the displacement current

轧机液压压下电位移反馈电液伺服阀的测试与调整

Testing and Adjustment of Electrohydraulic Servo Valve of Electric Displacement Feedback

电介质对电位移矢量的影响

The effects of the dielectric on the potential displacement vector

电位移矢量没有明显的物理意义。

The electric displacement has no obvious physical meaning .

鼓风机静叶角度电位移指示的设计应用

Design for blower static blade angle of electric displacement instruction and its application

电位移矢量D与自由电荷关系的讨论

A discussion on relation between the electric displacement and free charges in the medium

利用该方法考察了不同结构尺寸、电位移与电场对解的影响。

The effects of different structural sizes and electric displacements on the solution are discussed .

电介质中的电位移

Electric displacement in dielectric

本文的主要创新点在于以亥姆霍兹定理直接分析电位移矢量和磁场强度矢量。

Directly qualitative analyzing electric displacement vector and magnetic field intensity are the achievement and innovation of this thesis .

通过对所有电畴求体平均来得到铁电薄膜的电位移和应变。

The electric displacement and the strain of ferroelectric thin film can also be gained by averaging all domains .

应力场、应变场、电位移和电场在夹杂端点附近都呈现r-1/2奇异性。

Stresses , straines , electric displacements and electric fields exhibit the inverse square root singularity near the inclusion tip .

解答表明，夹杂内的电场强度和电位移为常量。

It is shown from the solution that the electric field strength and electric displacement in inclusion are all constant .

最终得到了裂纹的应力强度因子与电位移强度因子之间的关系。

Finally , the relations between electric displacement intensity factors and stress intensity factors at crack tips can be obtained .

导出了作用在位错上的像力和刚性线夹杂表面剪应力和电位移的解析表达式。

The image force acting on the piezoelectric screw dislocation and the generalized stress on the surface of rigid line are calculated .

研究了含有同心币形裂纹的压电长圆柱体的弹性应力和电位移响应。

The response of elastic stress and electric displacement in a long piezoelectric cylinder with a concentric penny-shaped crack is investigated in this paper .

考虑到e光电场矢量与电位移矢量的差别，对菲涅耳方程进行了一定的修正以满足e光的边界条件。

Considering the differences between the electric field vector and displacement vector of e ray , Fresnel equations are modified to meet the boundary conditions .

数值结果表明，应力强度因子和电位移强度因子与裂纹间的距离、裂纹的几何尺寸有关；

Numerical examples are provided to show the effect of the distance between two cracks upon stress and electric displacement intensity factors at crack tips .

结果还表明，电位移强度因子取决于材料常数和机械载荷，但与电载荷无关。

It is also found that the electric displacement intensity factor depends on both material properties and the mechanical loads , but not the electric loads .

并得到了平衡问题的扇形板和扇形环板在两种边界条件下的位移、电势和磁势，应力、电位移和磁感应强度的三维精确解。

The three-dimensional exact solutions of the displacement , electric potential , magnetic potential , stress , electric displacement and magnetic induction of equilibrium problems are also obtained .

与不可导通电边界条件相比，导通裂纹表面的电位移强度因子比不可导通裂纹的电位移强度因子要小许多。

It is found that the electric displacement intensity factors for the permeable crack surface conditions are much smaller than the results for the impermeable crack surface conditions .

算例表明在电极边缘的邻域内存在剧烈的应力集中和电位移增强，足以造成介质的脆性断裂或介质击穿。

A numerical example reveals that strongly concentrated stresses and extremely intensified electric displacements near the electrode border are high enough to puncture or fracture the piezoelectric medium .