查询词典 shear modulus

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。

This thesis is aimed to study the two boundary ductile shear zones of the Qilianmicrocontinent, both of them are large ductile strike-slip shear zones, and to understand thecharacteristics and nature of shearing, original mechanism, and their contribution to the orogen,through the investigation of their spatial distribution, geometry, structural analysis, chemicalcomposition of mylonite and syntectonic anatexis, and geochronology.

祁连微地体的南北边界均为大型韧性走滑剪切带。本论文旨在通过调查这两条韧性剪切带的空间分布、几何学和运动学特征，形成的温压条件、时代，探讨这些大型韧性走滑剪切作用的特征、性质，形成机制，以及它们对造山作用的贡献。

Furthermore, finite element program ABAQUS6.5 was also used to simulate experimental course. Results show that the change of ply splice angle will lead to shear stress concentration on 0 ply in splice region. But the average of shear stress along notch root of specimens almost does not change.

采用有限元软件ABAQUS6.5对实验过程进行模拟，得到拼接层角度改变将引起拼接层中0层出现切应力集中，但沿缺口切应力的平均值几乎不变。

This paper will analyze the mechanical performance of the wheel and design a test-bed to test the performance of the lunar rover's wheel. Firstly, the mechanical characters of the soil are separated to press-sinkage character and shear character based on Bekker's theory, and common press-sinkage and shear models are introduced and the theory of Lankine passive earth pressure is also introduced. These basic theories are helpful to construct model.

根据Bekker半经验法的基本思想，将土壤的力学特性分解为水平方向的剪切特性和竖直方向的承压特性，阐述了地面力学中常见的土壤的承压、剪切等力学模型，并引入了朗肯被动土压力理论，为建立车轮在松软土壤中前进和转向的力学模型奠定了基础，同时进行了实验土壤的剪切实验，测量了土壤的内聚力和内摩擦角等参数。

Our company main products has: IC integer machine; IC legs cut machine; IC grinding machine word; electromagnetic machine parts; pneumatic machine parts; automatic bulk shear pin capacitance; belt loaded shear pin capacitance machine; belt fitted Capacitor Forming Machine; in bulk, with mounted machine resistance; None jumper waste molding machine; triode automatic molding machine; PC board feet cut plane; tungsten steel Grinding; bulk with loaded machine parts; V-CUT substrate folding board machine; PC board sub-board machine; automatic feed plate; hand solder immersion heaters; PCB trolley, trolley and block tin, the ordinary solder kit aircraft series Reflow Products ....

本公司主要产品有：I.C整型机；I.C切脚机；I.C磨字机；电磁式零件成型机；气动式零件成型机；全自动散装电容剪脚；带装电容切脚机；带装电容成型机；散装、带装电阻成型机；无废料跳线成型机；三极管自动成型机；PC板切脚机；钨钢刀磨刀机；散装、带装零件成型机；V-CUT基板折板机；PC板分板机；自动送料盘；手浸式焊锡炉；P.C.B台车、手推车及挡锡条、金手指防焊套、流焊架等系列产品。。。。

Main Product: resistors forming shear pin machine, shear pin capacitance molding machine, molding machine crystal, V-CUT substrate sub-board machine, Grinding, cutting foot machine, pneumatic molding machine, IC plastic plane, IC legs cut machine, IC grinding the word machine, automatic feeding plate, tungsten steel chip, PCB solder placed Units cars and exclusive framework, block tin, the ordinary solder Series Des Welding Products

主要产品：电阻成型切脚机、电容成型切脚机、晶体成型加工机、V-CUT基板分板机、磨刀机、切脚机、气动成型机、IC整型机、IC切脚机、IC磨字机、自动送料盘、钨钢刀片，PCB放置台车及焊锡专用框架、挡锡条、金手指防焊系列辅焊产品

At low shear rate, the beood of human body perform as Casson fluid, but at high shear rate incline toward Newtonian fluid.

在低剪变率条件下人体血液表现为卡森流体，在高剪变率条件下则趋向于牛顿流体。

However, the Casson equation agrees well only when the shear rate is less than 10 s?1. The flow field of the carotid bifurcation usually covers a wide range of shear rate. We therefore believe that it may not be sufficient to describe the property of blood only using the Casson equation in the whole flow field of the carotid bifurcation.

然而Casson模型只有在低切变率条件下才与血液吻合的较好，而在颈动脉分岔血管中切变率值的分布范围却很广，因此，我们有理由认为，在整个颈动脉分岔血管流场中均采用Casson模型来模拟血液的本构关系是不够的。

Through referring related documents and analysis of builded bridges home and abroad, this dissertation makes anslysis on design of whole bridge on the basis of design theory for general box-girder, and combined with the design of Long-March bridge. There makes a special research on shear connecter which connecte corrugated steel webs with concrete board up and down. Design method of shear connecter is discussed.

本文在参阅国内外有关文献及实桥资料的分析，以普通混凝土箱形梁设计理论为基础，结合长征桥的设计，分析了整个桥梁的设计过程，尤其对波形钢腹板和顶底板混凝土的剪力连接件进行了研究，给出了计算方法。

The critical Reynolds number decreases with countercurrent shear stress and increases with cocurrent shear stress.

切应力对表面波的稳定性作用与气流方向和液膜的流动状态相关。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。