剪应变

The apparatus for static and dynamic universal triaxial and torsional shear soil testing is employed to perform stress-controlled cyclic coupled vertical and torsional shear test by different cyclic stress paths. Through a series of tests on saturated clay, the dynamic deformation, stress-strain relationship and dynamic strength are systematically investigated under rotation of principal stress axes.

针对饱和黏土，利用土工静力－动力液压三轴－扭转多功能扭剪仪进行了均等固结下的耦合循环剪切试验，着重研究了不同循环应力路径对应力－应变关系和强度特性的影响。

The dissertation mainly has a research on beam shape of concrete transfer floor. The load form of transfer floor is complicated and the stress-strain changes greatly, so the structure design could be divided into the calculations of rectangular sections in bending, incline plane in shearing, and shear wall structure.

本文以目前广泛使用的梁式钢筋混凝土转换层为研究对象，针对梁式转换层受力复杂，应力应变变化大，重点研究了深梁截面设计法的正截面受弯、斜截面受剪及转换层剪力墙结构的计算，并对转换层结构构造设计进行了分析。

A "successive integration method" was firstly applied to the calculation of the plastic strain in large deformation analysis. By this method, it is easily to distinguish different resolved shear stresses and shear strain rate in different slip systems.

将"连续积分方法"首次应用到大变形弹塑性有限元分析中，使得晶体塑性模型能够区分出不同滑移系上分解剪切应力及相应产生的剪切应变，更好地反映金属材料塑性变形的微观特性。

The experimental results show that 0.2%yield she ar stress, ultimate shear stress and 0.2%yield tensile stress, ultimate tensile stress under torsion-tension combined high strain-rate decrease with increasi ng temperature.

试验结果表明：该材料在高应变率扭-拉复合加载下的名义剪切屈服强度、剪切强度极限和名义拉伸屈服极限、拉伸强度极限均随温度的升高而降低。

The lower the number of imperfections is, the higher the maximum unbalanced force in strain-softening stage is.

在应变软化阶段，最大不平衡力的明显的突增是由于被剪切带切割的试样块体发生了沿剪切带方向的运动。

Based on this review, authors indicate that the readjustment of mineralogical and chemical compositions and volume changes are the main research areas of the fluid action in ductile shear zone. The study on the fluid action in ductile shear zone will be carried out in the following aspects: evolution history of tectonicfluid, tectonic physicochemistry, and the strain model and its features.

本文在综合评价现有研究成果的基础上认为，岩石的成分变异和体积变化是韧性前切带内流体作用研究的主要内容，韧性剪切带内构造－流体演化历史，构造物理化学、岩石应变模式及其特征的研究是今后韧性剪切带内流体作用研究的发展方向和前沿领域。

The ductile shear zone played an important role in localization of gold ore deposits:(1) The ductile shear zone confines the source, migration and evolution of ore forming fluid ;(2) Shear stress and deformation accelerate the remobilization of min.

田湾矿田剪切带制约着成矿流体的来源、运移和演化，剪切应力、应变作用对成矿元素的活化迁移具有重要的影响，为金的成矿提供了物质基础和创造了条

The ductile shear zone played an important role in localization of gold ore deposits:(1) The ductile shear zone confines the source, migration and evolution of ore-formingfluid;(2) Shear stress and deformation accelerate the remobilization of mineralized elements;(3) The ductile shear zone supplies space for ore-forming fluid deposition.

田湾矿田剪切带制约着成矿流体的来源、运移和演化，剪切应力、应变作用对成矿元素的活化迁移具有重要的影响，为金的成矿提供了物质基础和创造了条件。

The ductile shear zone played an important role in localization of gold ore deposits:(1) The ductile shear zone confines the source, migration and evolution of ore-forming fluid;(2) Shear stress and deformation accelerate the remobilization of mineralized elements;(3) The ductile shear zone supplies space for ore-forming fluid deposition.

田湾矿田剪切带制约着成矿流体的来源、运移和演化，剪切应力、应变作用对成矿元素的活化迁移具有重要的影响，为金的成矿提供了物质基础和创造了条件。

The shaping course of Fine blanking is very complex. Material forms a local plastic cutting area between punch and bottom die, and brings violent plastic flow under the effect of press stress. The grad of stress and strain is great, and it is an unstable transmutation process that came through an elastic distortion, plastic distortion and cut rupture.

精冲成形过程非常复杂，材料在狭窄的凸、凹模间隙附近形成了局部塑性剪切带，在压应力的作用下产生强烈的塑性流动，应力应变梯度很大，是一个经历弹性变形、塑性变形和剪切断裂的非稳态大变形过程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。