变形的

In this paper, the dynamic compressing experiments for the matrix material of the tungsten alloys which have been three different deforming(0%、 32.6%、 44.6%) processed have been performed by the experimental technology of separated Hopkinson pressure bar and many accurate datum have been obtained. Also the three materials have been compared with each other and analyzed. The results show that the optimized values are in a certain range to optimize the materials by changing their deforming technology. The parameters of constitutive model of Johnson-Cook have been fitted based on the datum. Then proceed to the next step, adiabatic shear band of these three matrix materials has been analyzed with finite element method. The result shows that the relations between stress and strain are different because of the differences of technical process of the three materials, but they are in great commonness in the material experiment and in great coherence in the distribution of time and space, which can been seen from the space distributing figures of plastic strain.

利用分离式Hopkinson压杆实验技术对三种不同变形量(0%、32.6%、44.6%)钨合金基体材料进行动态压缩实验，取得大量精确的数据，对比分析三种材料，结果表明通过改变变形量对材料进行优化，其变形量的优化值是有一定范围的；本论文拟合、确定了钨合金基体材料Johnson-Cook本构模型参数并对三种基体材料绝热剪切带进行有限元分析，结果表明三种材料由于工艺流程的不同，应力应变关系也不尽相同，但从塑性应变的空间分布图上体现了材料很大的共性和时间以及空间分布的一致性。

The results under the oil lubricate friction conditions were similar with those under the dry friction conditions. The wear mechanism of 3Cr13 matrix alloy was micro-cutting and distorting wear. For the composites with a low fraction of TiC particle, distorting wear dominated and cutting was partly operating. For the composites with a high fraction of TiC particle, stress fatigue wear and wear of hard phase decohesion has occurred, but the main wear mechanism was still distorting wear. When the wear experiments were performed under the oil lubricate friction conditions, the main wear mechanism has became to abrasive wear and fatigue wear for the composites with the low TiC fraction, and fatigue wear would be to dominate for the composites with the high TiC fraction. There were similar wear mechanisms in H13 and 1Cr18Ni9 matrix composites.

在干摩擦条件下，3Cr13基体合金的磨损机理为显微切削和变形磨损；低体积分数的复合材料磨损机制以变形磨损为主，兼有少量的切削磨损机制；高体积分数的复合材料磨损机制以变形磨损为主，兼有应力疲劳磨损和脆性相剥落磨损；在油润滑摩擦条件下，3Cr13基体合金的磨损以磨粒磨损为主；低体积分数的复合材料磨损为磨粒磨损和疲劳磨损；高体积分数的复合材料磨损以疲劳磨损为主。H13、1Cr18Ni9基体及其复合材料的磨损机制类似于3Cr13基体及其相同体积分数的复合材料。

The method involves an iterative procedure, which incrementally flattens a 3D triangular mesh by region growing and obtains a parameterization with free boundary. The result is then converted to a parameterization with regular boundary by conformal mapping. Our method accounts for both the angle and area distortion during parameterization, it yields a parameterization with less global distortion and no triangular flipping.

采用区域增长算法逐层展平空间三角网格，得到空间三角网格曲面的自由边界的参数化结果，并利用保形变换将自由边界的参数化结果变换为规则边界的参数化结果；同时兼顾了参数化的角度变形和面积变形，使得参数化结果具有整体变形较小的特点，并能够避免三角形折叠的现象。

According to the viewpoint that the thinnest part of the deforming metal is usually the important and decisive part of the deforming force , the influence of the bridge size of the fash slot on the die forming and the deforming force is analyzed.

通过坯料在模锻型腔中的压挤成形过程，模拟开式模锻中飞边槽对金属充满型腔的作用，根据"变形金属最薄的部分常常是决定变形力的重要部分"这一观点，分析和探讨飞边槽桥部尺寸对模锻成形及变形力的影响，提出对高度较小、直径较大的齿轮以及复杂模锻件设计方法的改进，以提高该类锻件的模具寿命和生产率。

On the basis of Chen's equation of finite deformation mechanics with a dragging coordinator system,the paper studied the meaning of elastic parameters and constitutive equation in the medium equivalent to classic infinitesimal deformation mechanics that cracked,large deformation formation corresponds to and relevant features of seismic velocity.

基于陈至达的拖带坐标系的变形力学方程，研究了大变形破裂地层对应的经典无限小变形力学的等效介质弹性参数的含义、物性方程和相应的地震反射波的速度特性。

The comparison shows that the presented algorithms are capable of the numerically implementing of complicated constitutive model; and the modified ALPHA model, which overcomes the deficiencies of modified Cam-Clay model, such as predicting higher peak strength for over consolidated clay and assuming elastic deformation inside the initial yield surface, can depict the nonlinear and nonrecoverable deformation before yielding. Through varying model parameters, more complicated deformation behaviors can be simulated by the modified model.

改进的本构模型克服了修正剑桥模型预测的超固结土峰值强度过高、初始屈服面内假定为弹性变形等缺点，能够较好地描述土体初始屈服面内的的非线性和不可恢复性变形特征；通过变化模型参数，可模拟变形特性较为复杂的土体。

Because quibau thick version 5.1, the back surface friction phase after sticking, la version force focused on the stamp pane at the ends, and the entire block is not fully apply it to the roller, the cnditions stress unevenly, in addition to the break-up of unaccumulate gamta, measurementunder, in the business card printing and membership card design is represented as a rigid body, there is almost no extrusion surface dimensions, it remained stable; and for thin base, together with the pad of paper plates attached to the roller for some examples of the frictional force of isolation, etc, in the role of uponsize in each of the cnditions of a uniform stress distribution, printing better apply it to the surface, it is large, measurementunder overprinter error.

因为厚版基包在滚筒上后，其背后与滚筒暗不天相贴后摩擦力较不小，不推版力只集洋在版口处的两头，分座印版不是分座贴在滚筒上，各质点答力分拨不平均，不兴宏不小的板滞倾圯边，不推伸变形较小，在制卡和会员卡制作历程洋表示为刚体，实在不有有挤压变形，不陈其暗不天尺寸根基保留安定；而差于薄版基，加衬垫纸的印版装在滚筒上后因衬纸的分隔，相答摩擦力变小，在不推力的功用下每个质点的答力漫衍较平均，印版较好不天贴在滚筒暗不天，不陈其不推伸变形较不小，套印差错较不小。

The effects of amount of added-Ti and slab reheating temperature on high temperature precipitation have been investigated.

随变形温度的提高、或变形速率的增大或初始变形量的增加，奥氏体再结晶的完成的时间将减少。

Firstly the elastic stage of the cutting tool and workpiece in rectangular element is modeled and the relationship between the element node force and element node displacement also deduced.

首先选用矩形单元对刀具和工件弹性阶段进行有限元建模，得出其单元节点力和节点位移之间的关系，然后利用普朗特路斯方程，推导工件材料塑性变形时单元节点力和节点位移之间的关系，并指出金属由弹性变形到塑性变形时其单元刚度矩阵变化的规律，从而为实现金属切削过程的数值模拟提供可靠的理论基础。

This application focuses on the aspects of chemical variation rule of rocks and mineral composition changes of mylonites corresponding to the ductile shearing by the case study in the ductile shear zones in south Tan-Lu fault belt. The results show that there exists evendent variation between deformed and undeformed rocks in ductile shear zones, i.e., the decreasing of SiO2 and alkali elements as well as the large ionic lithophile elements, such as Rb,Sr,Ba. The total REE has the behavoir of increasing during the deformation.

本研究着重选择郯庐断裂带南段广泛出露的中深层次韧性剪切带作为研究对象，系统研究剪切带内外变形条件对岩石化学成分变异规律、研究糜棱岩中变形矿物的化学成分随剪切应变作用的对应关系韧性剪切带内，随着变形程度的增加，韧性剪切带糜棱岩中一些常量元素、微量元素和稀土元素和应变强度之间存在明显的对应关系，主要表现SiO2 和碱金属和大离子亲石元素如Rb，Sr和Ba的亏损以及REE总量增加。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。