查询词典 dimensional analysis

The results of numerical analysis show that the elastic modular and the poisson ratio have no effect on two-dimensional bearing capacity, but can affect the ultimate bearing capacity of three-dimensional foundations and control the convergence and precision of finite element calculation; the earth pressure coefficient controls the geostatic stress of foundation, sequentially affects the ultimate bearing capacity of foundations and the convergence of numerical calculation. When calculating the ultimate bearing capacity of undrained saturated foundation, the complete formulation exists shear locking, and reduce formulation exists hourglassing, so the hybrid formulation is suitable to imitate the geomaterial. When the soil obeys nonrelevent flow rule, the yielding function is different from potential function, and the elastic-plastic matrix of soil is asymmetric, so the unsymmetry numerical solver and appropriate finite element mesh is required.

研究结果表明，土体弹性模量和泊松比对二维基础极限承载力没有影响，但是影响着三维矩形基础的极限承载力，控制着ABAQUS数值算法的计算精度与收敛速度；地基土压力系数控制着地基土体中的地应力平衡，从而影响着二维条形基础和三维矩形基础的极限承载力和地基破坏包络面；对于不排水饱和软黏土地基，常规的完全积分单元会造成剪力自锁现象，而减缩积分单元则存在过于柔化的现象，故采用杂交单元来模拟较合适；当土体服从非关联流动法则时，屈服函数与塑性势函数之间存在差异，从而导致土体弹塑性矩阵呈现非对称性，在有限元计算中必须采用非对称数值解法，并且合理地划分单元才能对极限承载力进行准确求解。

Methods A wet hip joint's sample from corpse was scaned by CT and all images of every cross-section hip joint's layer was obtained, and an hip joint's model was contructed with Unigraphics NX 2.0 and Solid Works 2006 SP 0.0 software. The models were assembled when simulated total hip arthroplasty after total hip joint prosthetic and ischiofemoral ligament model had been constructured. Analysis was done on von Mises stress distribution and amount of total hip component when simulated seated leg-crossing manuver. The bone and metal components were meshed as rigid bodies, composed of three-dimensional, all-quadrilateral rigid body elements, and hip joint capsule ligament was fully three-dimensional, hexahedral continuum elements representations. Results The current form of this ischiofemoral ligament's reconstruction finite element model provided for multi-body contact, large displacement interfacial sliding, large deformation capsule ligament representation, and clearly reflected the real ischiofemoral ligansent's anatomy and biomechanical behavior. The maximum on Mises stresses at the joint interface was more than that fur an otherwise identical hardware-only construct.

选择成人尸体髋关节行CT成像得到髋关节每层横截面图像，提取边界坐标，利用有限元分析软件Unigraphics NX 2.0和Solid-Works 2006 SP0.0构建出髋关节三维有限元模型及人工髋关节假体，并模拟全髋置换术进行装配，将坐股韧带按其术中重建位置进行构建骨骼与金属模型采用三维十节点四面体实体单元进行网格划分，关节囊六面体连接单元划分，模拟坐位腿交叉动作载荷获取假体撞击过程的角活动度和相应的von Mises应力分布情况结果所构建的多体连接、大界面划移、大变形的坐股韧带重建有限元模型，客观反映坐股韧带真实解剖形态及生物力学行为，增加坐股韧带重建的模型其关节面的最大主应力值大于仅有金属的模型。

The two-dimensional structural units (such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space are assembled according to the sphere close packing manner, and the close packing layers parallel to {0001}. There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers. The two types of structural layers with different interlayer space fitted together in six kinds of assembling modes and formed six kinds of crystal layers. The combinatorics analysis of the two-dimensional structural units revealed that there may be 28 kinds of TOT type interstradified minerals in six kinds of polysomatic assembling modes of interatradified structure. The structural layer is symmetrical for octahedron sheet in the structure of interstratified minerals and shows polarity characteristics.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；两种模式的结构层与不同类型的层间物组装形成六种组装模式的晶层；并通过二维结构单元体的组合规律的分析，计算出可能存在的28种TOT型间层结构，它们分属于6种间层结构多体性组装模式；间层结构中，结构层对于八面体片是不对称的，并在属性上表现出极性特征；间层矿物的晶层类型可用6种多体性组装模式加以表达。

Deep well drillstring is scatter to umpty dimensional beam unit along axes. Lengthwise vibration equation of whole drillstring is found with three-dimensional dynamic finite element method. With this equation and improved Ritz Vectors, dynamic response analysis and calculation of drillstring is carried out, also, the method of vibration model splice is used.

将深井钻柱沿轴线离散为若干个空间直粱单元，用三维动力有限元法进行振动分析，得到整体钻柱结构的纵向振动方程，用改进的Ritz向量法及振型迭加法对钻柱进行动力响应分析和计算。

Testing results of piles under low strain integrity are normally interpreted using one-dimensional stress wave theory. While one-dimensional stress wave theory is acceptable for pile-driving analysis the responses of piles integrity tests can not be adequately simulated when the hammer and the incident wave length are small in relation to the diameter of the pile.

基桩动测问题的理论基础一维应力波理论只有在锤径桩径比、波长桩径比、桩长桩径比足够大时才能近似成立，否则该问题实际上为应力波在柱体中传播的三维问题。

A detailed three-dimensional solid model of the piston is established by means of Ansys 11.0 Workbench Environment, which is issued in March 2007. Using the third thermal boundary conditions, analysis of the three-dimensional piston, including temperature, displacement and thermal stress field are performed by means of thermal-structural coupling. Structural optimization is also accomplished and a new piston has been designed, which performance is getting improved.

本文在2007年3月发布的Ansys 11.0协同仿真环境中建立了详细的活塞三维实体模型，运用第三类热边界条件，结合热耦合分析方法完成了活塞的三维温度场，位移场及热应力场的仿真，在此基础上对活塞的结构优化进行了探索，并设计出一款性能得以改善的活塞，实现了真正意义上的仿真驱动产品设计。

The response time can be shortened and high throughput and real-time detection analysis can be achieved. Although now the use of zero-dimensional nanomaterials is popular, it is still rare for the study of one-dimensional materials.

与传统的生物传感器相比，基于纳米技术的新型生物传感器已呈现出更优越的性能，具有了亚微米的尺寸、换能器、探针或者微米系统，生物传感器的化学和物理性质和其对生物分子或者细胞的检测灵敏度大幅提高，响应时间也得以缩短，并且可以实现高通量的实时检测分析。

After many years of sustained development, Hepburn mold to achieve the mold design, development, modeling integration, now has two-dimensional, three-dimensional, structural design and other high-tech talent and machining centers, wire cutter, electrical pulse a variety of high-precision equipment, and the introduction of Japan's advanced runner technology, mold flow analysis software to enable the development of our company have a difficult, high-precision molds.

经过多年的持续发展，海普模具实现了模具设计、开发、造型一体化，现拥有二维、三维、结构设计等高技术人才及加工中心，线切割、电脉冲多种高精度设备，并引进日本先进浇道技术，模流分析软件，使我们公司具备了开发高难度，高精度模具。

The analysis shows that with given grid size higher accurate difference scheme can give higher resolutions with wider range of scales, or with given accuracy large grid size can be used for the higher accurate difference scheme. The second part is the numerical simulation of two-dimensional axisymmetric jet. The simulation results show the structure in the near field and the initial transition. In the near field, Kelvin-Helmholtz instability leads to the formation of vortex ring, and nonlinear growth leads to the merging of vortex ring. This is the main instability form. Under the assumption of axisymmetry and two-dimensional computing conditions, the results are applicable only in the near field.

第二部分采用高精度的差分格式对二维轴对称射流进行了数值模拟，模拟结果显示了射流流场结构和涡结构的发展过程，在射流流场近区，K-H失稳导致涡环的产生以及非线性效应的增长导致涡环的对并是射流失稳的主要形式；分析指出在轴对称假设下的射流数值模拟只适用于射流近区的分析。

Take the common platoon quadrat in the formula most typical enemy two-row as the example analysis plate two-dimensional platoon type whole optimization question, unifies Yu Liao the use, establishes reasonable mathematical model which the two-dimensional platoon type whole optimizes.

以常见排样方式中最典型的对头双排为例分析板材2维排样的整体优化问题，结合余料的利用，建立2维排样整体优化的合理数学模型。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。