力学

The main creating aspects are finding and clarify such a fundamental physical process that the grain boundaries emit vacancies under compressive stress to induce solute non-equilibrium grain boundary dilution and absorb vacancies under tensile stress to induce non-equilibrium grain boundary segregation, formulizing the structural equations and the composition equations in force equilibrium in grain bounary region to describe this physical processes and the kinetic equations for non-equilibrium grain boundary segregation under tensile stress, calculating the modulus in grain boundary region from the expermental data of grain bounday segregation using the structure and coposition equations and calculating the diffusion coefficients of vacancy-solute atom complexes using the kinetic equation simulating the experimental results of grain boundary segregation.

本项目的主要创新点是，发现并阐明了弹性应力场作用下空位与晶界交互作用的基本物理过程：在张应力作用下，晶界会吸收空位，引起溶质非平衡晶界偏聚；压应力作用下，晶界会发射空位，引起非平衡晶界贫化。建立了描述此物理过程的晶界区力学平衡的结构方程和成分方程；？建立了张应力引起的非平衡晶界偏聚动力学方程？；用晶界区力学平衡的结构方程和成分方程？，首次通过实验测量计算出多晶材料晶界区的弹性模量；通过建立的动力学方程模拟实验结果，首次获得溶质原子－空位形成的复合体的扩散系数。

The intercalated structure, mechanical properties, dynamic mechanical properties and thermal stability of these nanocomposites were investigated.

对SEBS/OMMT NC的插层结构和物理力学、动态力学、耐热等性能进行了研究。

These productions boosted the development of plastic theory in engineering and settled a platform of applying plastic theories in engineering. And especially the intergraded mechanical models of metal bulk forming process provided a new approach of describing the metal bulk forming process in quantitative and parameter methods and make possible the realization of intelligent function of the computer simulation of metal plastic forming process.

所取得的主要研究成果是对工程塑性理论的深化及其在应用方向上的提升，构成了推广应用工程塑性理论的简易平台，特别是基于模型单元的力学模型而建立的金属体积成形过程的整体力学模型，是定量参数化描述体积成形过程的新的有力工具与方法，是赋予金属塑性成形过程模拟以智能化功能的关键。

Meanwhile, performance of PP/PA6 blend is meliorated For combination system of polypropylene/wood flour,research the effect of the content of wood flour and the grafted percents of grafting copolymer on the mechanical properties of composites.

对于聚丙烯/木粉复合体系，探讨了接枝共聚物的用量和接枝率对体系力学性能的影响；同时使用3种不同的加工工艺，研究了不同的加工工艺条件对材料的力学性能的影响。

The paper mummeries complexities and challenges for fluid flowing in fractured media,and focuses on the contents and methods to study fluid flowing in complicated fractured media for development of complex reservoirs.

总结了油气藏渗流力学存在的复杂性和面临的挑战，提出了复杂裂缝网络渗流力学的基本内容、研究方法，为复杂油气田开发提供了指导性的发展方向。

During overpassed 20 more years, as a kind of new experimental technology, small punch test for measuring small size specimens has been developed to evaluate the material mechanical properties of in-service equipments. It is already used to determinate the elastic modulus, yield stress, plastic properties, endurance strength, ductile-brittle transition temperature, fracture toughness, creep properties, plasto-viscous properties and so on.

20多年以来，采用小型试件的小冲杆试验技术来测量在役设备材料的各种力学参数已经取得了很大进展，这个方法已经用来确定材料的弹性模量、屈服强度、塑性性能、抗拉强度、韧－脆转变温度、断裂韧度、蠕变性能和黏塑性性能等各种力学性能。

The paper reviews the development in the analytical theory of mechanical behavior of composites, pointing out the problems existed, presenting creatively the concept of yarn state, solving the descriptive problem of perform structure of any woven composites and laying the foundation for predetermining the elastic behavior of 3-d woven composites with computer. On the basis of yarn state, the relative cross section deformation theory is introduced, the yarn cross section deformation is studied, and the experiential formula is described in the paper on the basis of experiment. The crimping state of yarn is studied, the classical "straight warp view"is modified, and the crimp height value of crimped yarn is studied. At the same time, with shrinkage rate sine method, the paper proposes the idea which imitate the shape of crimped yarn. With the third power template curve, the paper describes the microgeometry structure of fabric, finding a brief and precise approach for the calculation of mechanical behavior of composites.

本文回顾了复合材料力学性能分析理论的发展，指出了存在的问题，创造性地提出了纱态概念，解决了任意结构机织复合材料预制件结构表征问题，进而为用计算机预报三维机织复合材料的弹性性能打下了基础；基于纱态概念，提出了相对截面变形理论，研究了纱线截面变形情况，在实验的基础上给出了纱线截变经验公式；研究了纱线屈曲状态，修正了传统的&地经纱直线论&，提出了以纱线缩率研究屈曲峰谷值的思想，同时以三次样条曲线拟合了纱线的卷曲形状，较好地描述了织物的细观几何结构，为复合材料力学性能的计算找到了一条既比较简便又比较精确的途径。

The sclera samples obtained after one month, two months, three months and six months were axial tensed in pretesting, relaxing, creeping and deforming. A series of dates and curves that represent conventional mechanical properties and viscoelastical properties were obtained.

选择简单可行的轴向拉伸的实验方法，分别对术后1月、2月、3月、6月加固条带区及对照眼相应区等5种兔眼巩膜试件进行预拉伸、应力松弛、蠕变及破坏的生物力学实验研究，得到一系列表示常规力学性质的数据和曲线，并进行统计、比较。

From the visual angle of mechanics,bone remodelling plays an important role in adapting to load environment and repairing microcracks.

从力学角度讲，骨重建的作用一是适应力学环境，二是修复微裂纹。

Through the morphological observation on silicon particles of Al-Si-Cu-Mg cast alloy, it is found, that during solution heat treatment the evolution of eutectic silicon morphology and their effect on mechanical property can be classified into three stages. In the initial stage, necking, stubbing and fragmentation of silicon particles results in an improvement in plasticity of the alloy. In the intermediate stage, the mechanical properties of the alloy attain peak values due to the spheroidization of silicon particles.

在固溶处理过程中，共晶硅相形貌发生了显著的变化，并对合金的性能产生了很大的影响；通过定量金相分析，共晶硅相形貌的演变及其对合金力学性能的影响可划分为三个阶段：固溶初期硅相的熔断和钝化使合金的塑性得到显著的提高；固溶中期以粒化为主，合金的力学性能达到了峰值；固溶后期硅相的粗化符合LSW粗化模型，硅相形貌呈现棱角小面特性，合金性能降低。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。