查询词典 finit element method

The comprehensive assessment model for navigation safety for oil tanks in the Singapore and Malacca Strait is put forward based on the fuzzy comprehensive assessment method- a relatively perfect mature quantity assessment method in recent years. Weights of each corresponding index and the subordinative degree of each assessment element is determined after extensive work with Delphi method.

借鉴了近年来比较成熟和理想的定量化评价方法，模糊综合评判，建立了新、马海峡水域油轮航行安全综合评判模型，通过广泛的专家调查，确立了各相应指标的权重以及各评价因素的隶属度。

Solid propellant ; structural reliability ; response surface method ; finite element method ; R-F method

固体推进剂；结构可靠度；响应面法；有限元法； R-F法

In this course three-dimensional finite element method is used to calculate the stress and deformation of the metal structure.The influence coefficient method is adopted to obtain the expression between the load and the offect ,and form the limit state equation of all failure mode.Finally.corresponding reliability indices are obtained with the JC method under truncated distribution.

在此过程中，运用三维有限元计算了门机金属结构的应力和变形，采用影响系数法，建立起荷载与荷载效应的显式关系，进而建立了各失效模式的极限状态方程，再用可截尾处理的JC法求出相应的可靠指标。

This paper is on the basis of analysedding and summarized that these projects were blown up and tested materials in the past, use fracture mechanics, the dynamics blast theory and finite element analytical method, have carried on the system, detailed analysis and describes to this kind of method of blasting, proving theoretically that can cut the base rock effectively in this kind of method of blasting, reduce base blowing up stress value inside the rock , play and protect underpart base rock blow up into the function influenced in vibration, and blew up mechanism and analysed the main influence factor blown up according to it, had put forward the rational optimization measure to the relevant parameter when implementedding and blown up .

本文在分析总结以往这些工程爆破试验资料的基础上，运用断裂力学、爆破动力学理论及有限元分析方法，对这种爆破方法进行了系统、详细的分析及论述，从理论上证明此种爆破方法可以有效地切割基岩面，降低基岩内部的爆破应力值，起到保护下部基岩不受爆破振动影响的作用，并根据其爆破机理分析了爆破的主要影响因素，对实施爆破时的相关参数提出了合理的优化措施。

It adopts Reynolds time-average N-S equation and k-s turbulence model to calculate the inner 3-D viscid turbulence flow of hydraulic turbine. In the unstructured grid, the governing equations are discredited with Finite Volume Method based on Finite Element Method. And the pressure correction method is proposed in numerical calculations.

然后采用基于雷诺时均N-S方程与标准k-ε湍流模型来计算水轮机三维粘性湍流场，在非结构化网格中，采用基于有限元的有限体积法对方程进行离散，用压力校正法进行数值求解。

In order to determine the optimum thickness of antifreezing layer of highway tunnel in cold region,the thickness was computed by separately using equivalent thickness conversion method ,weather analytic method and finite element simulation method.

为确定寒冷地区隧道防冻隔温层的最佳设防厚度，利用等效厚度换算法、气象解析法和有限元模拟计算法，分别对其设防厚度进行计算。

However, in designing the beamless slabs with equivalent frame method, the stress is an average values along the depth of section, which varies with the normal service state. Compared with the results by finite element method, the results gained by equivalent frame method cannot satisfy the requirement under the normal service state. Therefore, the tendons of beamless slabs should be designed and arranged based on the results of FEM taking account into vertical load and prestressed load.

本文通过分析，认为采用等代框架法进行无梁板设计时，其内力是基于截面平均的结果，在正常使用状态与实际受力状态有很大的不同，通过对比等代框架法和有限元计算的正常使用极限状态应力可知，按等代框架法设计的预应力布置并不能保证其正常使用极限状态的要求，据此提出了应根据无梁板在竖向荷载和预应力共同作用下弹性有限元分析结果进行预应力筋布置的建议。

Research results indicate that continuous Regional Identification Function is used in nodal virtual flux method, volumn integral and surface integral enhances the convergence and stabilization;using 'put a big number' to deal with the first boundary is faster than 'Remove row and column', the more the first boundary nodes are the more obvious advantage will display;PCG method is quite faster than Crout method to solve equations;it is reliable to use three-dimensional finite element simulation theories to simulate and predict deep foundation pit dewatering in such areas.

研究结果表明，在结点虚流量法及计算体积分和面积分时引入连续的区域识别函数增强了解的收敛性和稳定性；处理已知水头边界的&置大数&法在时间上要比&去行去列&法短一些，定水头边界节点越多，其优越性表现越明显；PCG法比直接解法快很多；三维有限元数值模拟理论用于模拟预测此类地区的深基坑降水具有较高的可信度。

In this paper, we put forward an idea that the concrete pump car is robotized. For some problems about booms'robotization of concrete pump car, a lot of studies are thoroughly accomplished, by means of intelligent optimization method and finite element method of model design method, robotic kinematics and dynamics theory, computer graphics, computer simulation, mechanical control technology, hydraulic control technology, and so on. This idea establishes a new development way for research, design improvement and updating of the concrete pump car.

本文提出了泵车布料机构的机器人化的设想，并对泵车布料机构机器人化所涉及的若干问题，应用现代设计方法中的智能优化技术、有限元分析技术以及机器人运动学和动力学理论、计算机图形学原理、计算机仿真、液压控制等技术，进行了深入细致地研究，从而为现代泵车的研究、设计改进和升级换代开辟了新的途径。

The network seepage flow analysis method of rock masses is a numerical method compatible with Block Element Method on the basis of the assumption that the rock blocks are unpermeable while the discontinuities are permeable.

岩体网络渗流分析方法是在假定岩石块体不透水、岩体中渗流仅通过结构面进行的基础上建立起来的一种与块体单元法配套的岩体渗流数值模拟方法。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！