查询词典 finite dimensional

The method of simulating the problem of two-dimensional pressure seepage with the method of finite difference,disposing the anomalous boundary by mapping point method and protracting the current net was carried out.

对于二维有压渗流问题，采用有限差分方法进行数值模拟，用映象点法处理非规则边界，并绘出流网，与电模拟试验进行对比，验证了这种方法的可行性。

To deal with 3-dimensional and finite element variant design and analysis for complicated products,the modeling approach for products and parameter transfer structure were researched,parameter transfer rules adaptive for complicated product variant design were proposed,the affection relationship among parameters for model variant was raveled.

针对基于三维模型和有限元模型的复杂产品的变型与分析，研究了产品模型建模方法和参数传递结构，提出了适合复杂产品变型设计的参数传递规则，确定了模型参数之间的相互影响关系；介绍了复杂产品变型设计平台，实现了复杂产品的变型设计与分析。

Three-dimensional isothermal flows of two different screw heads of the injection molder are simulated by using the finite element package Polyflow and adopting the work conditions that the barrel wall is static and the screw rotates and reciprocates periodically.

往复式螺杆注塑机的核心部件是螺杆，其作用是将固态的塑料熔融塑化，并将其注入模腔。螺杆设计是往复式螺杆注塑机设计的关键技术之一[1]。由于没有解析公式来辅助设计注塑螺杆，故通常简单地参照挤出螺杆的设计方法进行设计[2，3]。

By using two-dimensional finite difference of time domain, the coupling between two subwavelengh slits is investigated.

利用二维时域有限差分法，研究了光波在金属层中亚波长两狭缝之间的耦合过程。

Based on the study achievements of some predecessors,bridge,pier and abutment were simulated by solid element,rail and sleeper were simulated by space beam element,the links of rail,sleeper,bridge,pier and abutment were simulated by spring element,a three-dimensional finite element spatial mechanics model for calculating the rupture force between continuously welded rail and high-speed railway bridge was established.

在吸收前人研究成果的基础上，采用实体单元模拟桥梁及桥梁墩台，采用空间梁单元模拟钢轨及轨枕，采用弹簧单元模拟钢轨、轨枕、桥梁与墩台之间的连接，建立了断轨三维有限元空间力学模型。

A three-dimensional finite element spatial mechanics model for calculating the additional longitudinal force transmission between continuously welded rails and high-speed railway bridges is established by using solid element to simulate bridges as well as pier and abutment,using space beam element to simulate rails,using spring element to simulate the link between bridges and tracks as well as pier and abutment.

采用实体单元模拟桥梁及桥梁墩台、空间梁单元模拟钢轨、弹簧单元模拟桥梁与墩台及轨道之间的连接，建立梁—轨纵向相互作用三维有限元空间力学模型。以丰沙线永定河单线铁路桥梁、秦沈线沙河双线铁路桥梁对其进行计算验证。

Relationship between forces born by bridge and rail under the action of temperature variation, deflection and braking are analysed by using bridge ballast rail as an unified model , and simply supported bridges, 30 m and 40 m in span length, are calculated with a programme of finite element of two dimensional frame structure.

利用桥梁—道碴—轨道的统一模型，对桥梁温度伸缩、桥梁挠曲作用以及制动力作用下的桥轨受力关系进行了分析，并利用平面杆系有限元程序对30m及40m简支梁桥进行了计

Based on bond-slip theory, nonlinear contact theory and fluid-structure coupling theory, coupling three dimensional finite element model about plunge pool slabs, water, bedrock and anchor bar is established, limiting dynamic displacement considering phases of stability failure is studied in this paper, the response characteristic of dynamic displacement is analyzed in virtue of prototype observation results, and stability of plunge pool slabs are predicted.

基于粘结滑移、非线性接触及流固耦合理论，建立水垫塘底板、水体、基岩、锚固钢筋的耦合有限元模型，计算不同破坏状态下底板块的极限动位移，结合原型观测结果进行动位移响应特性的分析，从而对水垫塘底板的稳定性进行识别。

This research method is to use the three-dimensional mapping software to draw the cardiovascular stent of different size first , next is it create their cardiovascular stent boundary conditions and simulation their of support after implantation according to finite element method into the human body to go; Receive different residue pressures and pressure of the repeated blood circulation , greatest stress , meets an emergency and the relation between total deformation amount caused; Being imitated the cardiovascular stent , the position with damage of fatigue life in the blood vessel by its greatest stress value at the same time ; But by the simulation result of the above , can understand that use life of Palmaz-schatz cardiovascular stent has been more than 109 up till now ; At the same time , can know the position where the stress two times concentrates , the right angle position joined in the rib and rib of Palmaz-schatz cardiovascular stent too.

本研究的方法乃是先会使用三维绘图软体画出不同尺寸的血管支架，然后在根据有限元素法去设定其血管支架的边界条件和模拟其植入人体后；受到不同的残留压力与反覆血液流动的压力，所造成的最大应力、应变及总变形量之间的关系；同时在由其最大应力值去模拟血管支架，在血管中的疲劳寿命与疲劳损坏位置；然而由以上的模拟结果，可以了解到目前Palmaz-schatz血管支架之使用寿命为109以上；同时也可以知道二次应力集中的位置，在Palmaz-schatz血管支架之肋和肋连接的直角位置。

Backgrounded by the main bridge of Zhanhe River Bridge at Chengdonghe Road,Pingdingshan City,the software MIDAS/Civil is used to establish a 3-dimensional finite element calculation model for the double X-shape arch bridge and the effect of arch rib sloping angle changes on the dynamic performance of the type of the bridge is studied respectively for six design alternatives.

以平顶山市城东河路湛河桥主桥为工程背景，采用有限元软件MIDAS/Civil建立该桥的空间有限元计算模型，分6种设计方案研究了拱肋倾角变化对斜靠式拱桥动力性能的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。