A mid-ocean ridge is a boundary between plates where new lithospheric material is injected from belows. 一道中海脊是板块之间的边界,在那里新的岩石圈的物质从下部注入。
Pressure Boundary material-metallurgy of the castings and components. 压力界面材料:铸件和部件材料。
There shall be boundary identification for the raw material stacking to avoid any misuse. 原材料堆放时应有堆放分界标识,以免误用。
Therefore besides the minimization of boundary energy in traditional bulk material, the anisotropy of surface energy, interface energy and strain energy can drive the grain growth in thin films. 因此,薄膜中的晶粒生长除像传统的整体材料中的晶粒生长一样要考虑晶界能外,还应当同时考虑表面能、界面能和应变能。
Tracks of the free surface movement of shocked lead and the front boundary of its material rejection are observed successfully by means of high-speed streak shadow technique with a magnification system. 用带放大系统的高速扫描阴影技术,成功地观测了在冲击加载下铅自由表面及其微物质喷射的前沿边界的运动轨迹。
The contact problems in engineering are very important but rather complicated because they deal with stress concentration, boundary nonlinear, and even material or geometric nonlinear problems. 接触问题涉及到应力集中、边界非线性、甚至材料或几何非线性,问题很复杂但又十分重要。
A governing equation at the freezing boundary of tissue like material was presented. 本文提出类生物组织有机体在冻结界面上的传热控制方程。
For no-boundary firms, the boundary refers to not the material boundary, but the competency boundary. 对无边界企业来讲,企业边界不再是指物质边界,而是指能力边界,企业边界的大小,取决于自身核心能力的强弱。
The description of contact boundary condition and material property is specially considered. 模拟中特别考虑了接触边界条件和材料特性。
Based on the static displacement measurement and the boundary element analysis, the material parameter identification problem is formulated as the problem of minimizing the objective function defined as the square sum of differences between the measured displacement and the calculated displacement by the boundary element method. 基于静态位移的测量和边界元分析,性能参数识别的问题转化为极小化目标函数的问题,其中目标函数定义为测量位移与边界元计算的位移之差的平方和。
In order to provide the ultimate bearing capacity with a higher engineering precision, a lot of factors including grid dimension, boundary conditions and material properties are taken into consideration in the nonlinear finite element analysis. 在非线性有限元求解过程中,考虑了网格精度、边界条件、材料特性等因素,使得到的极限承载力具有较高的工程精度。
Rubber is a very unique material, proper analysis of rubber components require handling the problems of geometric nonlinearity, nonlinear boundary conditions, and material nonlinearity. 橡胶是一种特殊的材料,要实施橡胶制品的有限元分析,就要能综合处理几何非线性、材料非线性以及边界非线性问题。
In this paper a method is proposed of computing moments from the boundary of a material cross area by using computer vision system. 提出了一种用计算机图象处理系统由面积边界来确定材料截面矩的方法。
Based on the modern control method, a LQR method, in which the vibration energy of the structure and the control signal energy were chosen as the object function, was adopted to control the vibration of plate with various boundary conditions through using piezoelectric material. 本文基于现代控制理论选用结构控制能量和控制信号能量作为控制目标函数的LQR法,利用压电材料对各种支撑条件下的板进行结构振动的主动控制。
Higher-order tensor impedance boundary condition for multilayer complex material 多层介质涂覆结构的高阶张量阻抗边界条件
Stochastic boundary element method with random material parameters 考虑材料特性E、v不确定的随机边界元法
Accurate boundary conditions of composite material plates are founded to resolve boundarycondition problems of complex holes by a conformal mapping method. 通过保角映射方法建立精确的边界条件,解决了复杂孔形的边界条件问题,按照所建立的数学模型对含有圆形孔的复合材料板进行应力分析,得到了精确解析解。
Secondly, the choice of boundary material and the matching of boundary effect of the test model of deep hole bench blasting are analyzed by utilizing stress wave theory. At the same time the results of experiments were applied to the project practice. 然后利用应力波理论,讨论了深孔台阶爆破试验模型的边界材料的选择和边界效应匹配问题,同时将实验结果应用到了工程实际中去。
It gives the maximum material boundary or the least material boundary and the comprehensive tolerance to satisfy the requirement of assembly or strength, and can obtain the higher economic benefit in manufacturing. 用最大实体边界(MMB)或最小实体边界(LMB)及综合公差(Tt),来满足装配或强度要求,并为制造提供更好的经济效益。
Mechanics-energy Principle for Boundary Effect in Explosion Welded Material 爆炸焊接边界效应的力学能量原理
The range of heat affect zone at joint is wider with increasing environmental temperature and obvious boundary with base material emerged. 热影响区的范围随焊接环境温度的升高逐渐变宽,并且与母材有明显的分界。
Detailed preprocessing techniques such as boundary conditions, material properties and the calibration of heat source are also given. 然后,在这个有限元模型中,还进行了详细的前处理,如,施加边界条件,设置材料属性以及热源几何参数的标定。
In 2000, France et al Labed N infinite boundary layer composite material structure has been optimized the thickness direction, and as one-dimensional structure of composite materials. 2000年,法国的LabedN等人对具有无限边界的双层复合材料结构进行了厚度方向上的优化,并将复合材料视为一维结构。
The simulation is mainly based on the momentum equation, the quality equation, energy equation, boundary conditions and material constitutive equations. 该模拟主要基于动量方程,质量方程,能量方程,边界条件以及材料的本构方程来实现的。
After setting drop boundary condition and defining material properties, the model is solved and calculated. Get the nephogram of maximum stress and strain and the related data of the camera lens under five kinds of drop gestures. 设置跌落边界条件,定义材料属性后,对模型求解计算,分别得出镜头在五种跌落姿态下的最大应力应变云图及其相关数据。
Grain boundary material directly influences the physical, chemical, mechanical and other properties. 晶界直接影响着材料的物理、化学、力学等性能。
Moreover, base on the TEM test, the effect of the grain boundary on the hardness of the material has been analyzed. 另外,在TEM测试基础上,分析了在晶界演变过程中晶界对材料硬度的影响。
Then traveling through the boundary conditions and material parameters to solve and get the numerical solution of the problem, and discussed the change of the response of soil when the parameters change. 3. 再通过边界条件及材料参数求解,得到了问题的数值解,并讨论了在参数发生变化时土体响应的变化。
For each material in a heterogeneous object, it is necessary to accurately determine the interfaces between the material and the others in one pass, and efficiently reconstruct the boundary surface of the material. 对于每类材质,需要准确地确定其与其它材质之间的分界面,并高效地重建其与其它材质分离的边界曲面。
Therefore, the analysis and study the grain boundary energy and grain boundary structure on the material science, metallurgy, solid state physics and solid chemistry provide an important theoretical foundation and guidance. 因此,分析和研究晶界能和晶界结构对材料科学、冶金学、固体物理及固体化学提供重要的理论基础和指导。