查询词典 optically anisotropic

Constitutive model: Based on the energy principle of fracture mechanics, energy addition theorem and statistical theory of rock-mass structure, a constitutive model of anisotropic equivalent continuum is derived.

裂隙岩体的本构理论运用断裂力学能量原理和能量可加性原理及岩体结构统计理论，导出了裂隙岩体的各向异性等效连续介质本构模型，并对柔度张量和等效应力作了讨论。

In Chapter 7, attenuative Lamb wave propagation in adhesively bonded anisotropic composite plates is introduced.

第七章在粘接的各向异性复合材料中引入衰减的Lamb波。

Regarding anisotropic material (including orthogonal aeolotropy) crack expansion question analysis and research, the people although have done the massive research work, but accumulates data is actually limited.

对于各向异性介质中裂纹扩展问题的分析和研究，人们虽已做过大量的研究工作，但所积累的资料却十分有限。

The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5～6倍的平均粒径，首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性，发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化，通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分，观测到接触面受剪时表现出明显的相对法向位移，并可分解为可逆性和不可逆性两个分量；(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型，并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性；(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析，比较了不同接触面本构模型对计算结果的影响，证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性，还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

The calculation of anisotropic plate with aerofoil manhole under external load was carried out.The numerical solution of hole-edge stress field was obtained.

对含机翼检修孔的正交各向异性板在外荷载作用下进行计算，得到孔边应力场的数值解。

The anisotropic texturing of a (100) silicon surface was performed using tetramethyl ammonium hydroxide solution including discontinuous ultrasonic wave process and NaClO additive.

本文在加入间隙式超声和NaClO添加剂的碱性四甲基氢氧化铵溶液中对单晶硅表面进行织构化处理。

In this thesis we investigate the beam propagation and amphoteric refraction in a Uniaxially anisotropic crystal.

本文在理论上研究了单轴晶体中的光束传输和正负折射现象。

During the electrodes buryied beneath the shallow earth surface were supplied with direct current, the electric-field distribution in anisotropic earth crust could be calculated by applying image method and electrostatic analogue method in electromagnetics.

以垂直于介质主轴方向的平面作为两种介质的分界面研究，对埋在较浅地表中的直流电极，以及其向大地供电而引起的各向异性地壳中的电场分布。

We discussed the ionization mechanism and the alignment mechanism responsible for the fragment ions'anisotropic angular distribution in detail.

对电离机理以及碎片离子的各向异性分布的原因进行了详细讨论。

For nonstationary Stokes problem ,materials'anisotropic character should be considered in a boundary layer or near the angular of the domain fJ.

对发展型Stokes方程，由于边界层或区域的拐角处需考虑物质的各向异性特征。

If I didn't care what anyone thought, I would.....

如果我不介意别人怎么看，我会。。。。

In recent decades, Chile has mandated earthquake-proofing for new structures, requiring that materials like rubber and features like counterweights be built into the architectural designs to allow buildings to bend and sway during temblors rather than break.

在最近数十年里，智利已经为兴建防震的新土建结构而对建筑材料提出要求，需要的材料类似于橡胶，而特性就象运用在建筑设计中的平衡物体，一旦应用以后，当地震发生时建筑就能弯曲摇摆。