欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
论文对反平面Ⅲ型裂纹电塑性区进行了分析．采用条带模型得到了电塑性区大小的表达式．对于电塑性区的边界条件采用了两种处理方式，一是采用机械位移连续性边界条件，另一种是假设电塑性区的切应力保持为常数的假设．其中后一种处理方式消除了电场和应力在裂纹尖端的奇异性，与实际情况相符合．两种处理方式得到了相同的电塑性区的大小的表达式，并根据两种处理方式计算了能量释放率．类比Irwin的应力松弛模型，论文采用电位移松弛模型同样得到了电塑性区的大小．将条带模型得到的结果与电位移松弛模型得到的结果进行比较发现，在小范围塑性变形条件下，两种方法所得的结果比较接近，从而说明这两种方法的有效性，得到了比较满意的结果．
英文摘要：
The yielding zone of the anti-plane mode Ⅲ crack problem in piezoelectric materials is ana- lyzed in this paper. Based on the strip model, the expression of the electric yielding zone is derived. The boundary conditions along the yielding segments have two types：one is the mechanical displacement conti nuity condition and the other one is that the stress is assumed to be constant in the electric yielding zone. The latter eliminates the singularity of the electric field and the stress at the crack tip,which is coincident with the reality. The two different conditions have the same results. The energy release rates of the two types are also derived in this paper. The electric yielding zone is also obtained based on the electric displace- ment relaxation model which is similar to the stress relaxation model by Irwin. Comparing the results of the two different models, the yielding zone size obtained by the strip model is approximately equal to the result of the electric displacement relaxation model. Therefore, under the condition of the small deformation,the results are effective.
同期刊论文项目
同项目期刊论文
Self-enhancement of the critical current of YBa2Cu 3O7-x coated conductors caused by the axial tensi
Shear and transverse stress in a thin superconducting layer in simplified coated conductor architect
Effect of shear stress on electromagnetic behaviors in superconductor-ferromagnetic bilayer structur
Angular Dependence of Transport AC Losses in Superconducting Wire with Position-Dependent Critical C
The effect of strain on the vortex structure and electromagnetic properties of a mesoscopic supercon
Experimental and theoretical investigations on the singularity of the intensity factor of the curren
Influences of Permanent Magnets Temperature Characteristic on the Levitation Force of YBaCuO Bulk Su
Magneto-elastic behaviour of thin type-II superconducting strip with field-dependent critical curren
Nonuniform Current Distributions in YBa2Cu3O7？x Coated Conductor Caused by Fatigue Damage with Digit
Analytical solutions of the Ginzburg-Landau equations for deformable superconductors in a weak magne
A general coherent gradient sensor for film curvature measurements: Error analysis without temperatu
Influence of soft ferromagnetic substrate on magneto-elastic behavior in a superconducting coated co
Structural Mechanics Exploration for Multicomponent Superconducting Solenoids by Hoop Strain Tests D
Critical-Current Degeneration Dependence on Axial Strain of Bi-based Superconducting Multi-filamenta
Analysis of Strain Effect on Critical Current Density in Superconductors With a Modified Semiempiric
A Structural Mechanics Model for the 2-D Mechanical Characteristics of ITER Cable-In-Conduit Conduct
Numerical analysis of magnetization AC losses in high-temperature superconducting slabs subjected to
Experimental investigations on the vortex instability and time effects of YBa2Cu3O7-x coated conduct
A modified wavelet-Galerkin method for computations in structural mechanics with strong nonlinearity
Magnetic Field and Strain Measurements of a Superconducting Solenoid Magnet for C-ADS Injector-II Du
Stress and magnetostriction in an infinite hollow superconducting cylinder with a filling in its cen
Influences of Temperature Cycle on the Levitation Force Relaxation with Time in the HTS Levitation S
Influences of compressive stress on the narrow hysteresis and piezomagnetic coefficient for the orie
Theoretical Modeling for the Effect of Twisting on the Properties of Multifilamentary Nb3Sn Supercon
Effect of Flux Jump on Current Density Distributions in Type-II Superconductors (vol 160, pg 201, 20
Contact mechanical characteristics of Nb3Sn strands under transverse electromagnetic loads in the CI
Self-alignment of micro-parts using capillary interaction: Unified modeling and misalignment analysi
Nonlinear magnetoelectric transient responses of a circular-shaped magnetoelectric layered structure
Numerical simulations of the alternating current loss in round high-temperature superconducting wire
Flux-pinning-induced interfacial shearing and transverse normal stress in a superconducting coated c
Depolarization and Electrical Response of Porous PZT 95/5 Ferroelectric Ceramics under Shock Wave Co
Theoretical model and analytical approach for a circular membrane-ring structure of locally resonant
Variation of magnetic domain structure during martensite variants rearrangement in ferromagnetic sha
An electrification mechanism of sand grains based on the diffuse double layer and Hertz contact theo
The influence of sand diameter and wind velocity on sand particle lift-off and incident angles in th
The Analysis of Turbulence Intensity and Reynolds Shear Stress in Wall-Bounded Turbulent Flows at Hi
期刊信息
位置：