计算单元

The hierarchical structure system was calculated by means of fuzzy comprehensive evaluation theory to realize quantification of the evaluation result. Subequently, based on the solution idea of multi-object reverse problem, a method for particular solution for big/small benchmark was derived, and then a set of virtual decision making units (DMU0) was solved.

利用模糊综合评价的理论对多层结构的系统进行评价计算，实现了评价结果量化；同时，基于模糊多目标决策反问题的求解思路，推导了求解大小标杆量化特解的方法，并以此求解出一组虚拟决策单元(DMU0)。

Model a quarter of the ship section using ANSYS.Observe the Von mises stress of the structure,and history of that of identical element.

用ANSYS建立了典型舱段的四分之一模型，用LS-DYNA计算观察了结构的应力云图以及典型单元处的应力随时间的变化。

Formula. At the same time, the article raised the seismic reduction factor formula for the SSDI system.The paper adopts finite element method based on the ANSYS procedure, and realizes the simulation of soil constitutional relationship through choosing Davidenkov soil model with proper parameters and using restartup method in ANSYS. Then, the procedure makes the soil nonlinearity simulation come true byusing parameter design language of APDL. Element Combin14 is be used to simulate viscoelastic boundary and radiation damping effect. At the same time, it presents integrated damping matrix for considering the coupling of different damping of soil and structure.

文章以ANSYS为计算分析工具和平台，通过对Davidenkov地基模型的研究及其参数的选取，利用ANSYS的重新启动分析方法并采用APDL参数设计语言来编制程序，实现对土体非线性动力本构模型的模拟；同时利用ANSYS中Combin14单元模拟粘弹性边界，以此建立人工边界来模拟辐射阻尼效应；并提出集成阻尼矩阵的方法，解决结构和地基土阻尼不同而导致的阻尼耦合的问题。

Using the characteristic of the regular curve boundary for a bending plate in engineering,the analytic integral formulae of assistant states in boundary element method with the linear element for a Kirchhoff circular plate are introduced and the systematic equation of BEM is established in this paper.

利用一般弯曲薄板边界为规则曲线的特点，对工程常用的圆形弯曲薄板，采用线性单元，导出K irchhoff圆板各辅助态的边界积分解析表达式，建立问题的边界元法系统方程，从而使薄板的边界元分析完全避免通常使用的高斯积分，明显提高计算精度。

The principle of piezoelectric modal sensor is introduced and the formulas of calculating modal respondence by measured piezoelectric outputs are gained.

介绍了压电模态传感器的实现原理，并给出了由实测压电单元输出得到结构模态响应的计算公式。

Moreover, during the radar signal generation, static and dynamic characters of backscattering coefficient are set up, and time sampling of each clutter unit is computed with voltage character and power spectrum character, and the sampling signals are added in every distance gate to output time series. In addition, noise is modeled with a function of Gaussian stochastic process.

在雷达信号模拟中，建立了杂波后向散射系数的静态和动态特性，从杂波的幅度统计特性与功率谱特性入手，计算了每个杂波单元的时域采样，按照对应的距离门叠加各个距离模糊间隔上的回波信号并形成时间序列，并采用一个高斯随机过程的样本函数来表示噪声模型。

The average stress and strain concept are adopted to solve theDEM applied to calculation of non-continuous stress of sandy soil.

采用平均应力和应变的概念解决了离散单元法应用于计算非连续的颗粒土壤内应力的难题。

In this paper, a new singular element about three dimensional cracks was formed and a new method to compute 3-D stress intensity factors was proposed.

构造了一种新的三维奇异单元，提出了一种有效计算三维裂纹应力强度因子新的数值方法。

For the first time the endplate bolted connection's finite element model with the original crack is set up by the singular element, the fracture problem study is introduced to the finite element analyzing. The J integral value and stress intensity factor of the crack tip are calculated by the ANSYS Parametric Design Language program, and the developing of original crack is judged from the K Rule and J Integral Rule.

第一次通过构造奇异单元来建立带初始裂纹的节点有限元模型，将断裂问题的研究引入到端板螺栓节点的有限元分析中，并通过ANSYS软件中Parametric Design Language编程来计算裂纹尖端的J积分值、应力强度因子，根据断裂力学中的K准则、J积分准则判断初始裂纹是否会重新启裂。

The method does not involve the discretization of the soil or piles and it follows the same analysis process and the content of stiffness matrix is just related to the number of pile and soil nodes under foundation cap.

应用该方法不需要划分桩-土体单元，分析中的计算矩阵仅与基础中桩数和筏板下土节点数量相关而与其他变量无关，分析过程简洁通用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。