查询词典 finite element method

This paper analyses the distributive law of axial compression in concrete wall and its influnce on strength of reinforced concrete penstock with steel lining located on the downstream surface of a concrete dam by the finite element method and model tests with material similar to prototype.

通过几个电站的有限元计算和仿真材料模型试验成果，分析混凝土坝下游面钢衬钢筋混凝土管道的轴向应力分布规律及其对管壁应力的影响，可作为管壁三维强度分析的依据，并指出在轴向压力和内水压力作用时裂缝更早发生。

Double Ring Reducer ; Finite Element Method ; Contact ; Fault Characteristics ; Fault Diagnosis.

国家自然科学基金；国家高技术研究发展计划(863计划)双环减速；有限元；接触；故障特征；故障诊断

With the narrow bandwidth of microstrip antenna, a microstrip antenna with the substrates of double negative media is designed by the software HFSS which is based on finite element method.

针对微带天线带宽较窄的问题，采用基于有限元法的HFSS软件，设计1种以双负材料为衬底的微带天线。

Bridge deck over lay structure of Yamen Bridge is analyzed through finite element method according to the character of double towers and single cable plane.

针对崖门大桥的双塔单索面斜拉桥结构特点，对桥面铺装层结构进行了有限元力学分析，总结了铺装层结构变形特点及性能要求，指导铺装层的设计施工；介绍桥面铺装沥青混凝土设计，及高粘度沥青混合料的施工过程和特点。

By means of the K-ε turbulence model and finite element method, the flow of the fluid in the valve and the piston during a cycle of pumping is simulated and calculated. The motion law of the crude oil in the valve passage and concentric annulus in the upstroke and downstroke is analyzed.

针对杆式泵泵简内的流体流动问题，采用湍流模型的K-ε两方程模型和有限元方法，对在一个抽油循环中阀与活塞在几个特定的位置的流体流动进行了建模与计算，具体分析了处于阀道内和同心环状空间中的原油在上下冲程的运动规律。

Drill collar thread ; finite element method ; stress ; structure optimization

钻铤螺纹；有限元；应力；结构优化

On the basis of field resources analysis,the drill collar thread model is created by UG,and analyzed the thread stress under different axial forces by finite element method.The structure optimization design process of drill collar is described in the paper.

在现场资料分析基础上，运用UG软件建立了钻铤螺纹联接模型，然后通过有限元软件分析了钻铤螺纹应力分布，得出了钻铤螺纹在不同工况、结构条件下的等效应力分布情况，并对钻铤螺纹结构优化设计过程进行了相应说明。

Based on the finite element method, the multi-mass dynamic model of a recovery parachute system is developed to study the main parachute performance using an attached apex drogue during the deployment.

采用有限元方法，建立降落伞回收系统的多质点动力学模型，研究了牵顶伞在拉直过程中对主伞性能的影响。

The expression of cogging torque is deduced on dual-stator permanent magnet synchronous machine, and the influence rules of the resulting cogging torque are analyzed with the change of relative angle between dual stators. The relation between cogging torque amplitude and the relative angle between dual stators is investigated. Finally, simulation verification is conducted based on finite element method.

针对双定子永磁同步电机，推导了内外定子及其合成齿槽转矩的解析表达式，分析了内外定子相对位置变化对合成齿槽转矩的影响规律，着重研究了合成齿槽转矩幅值与内外定子相对位置的关系，最后用有限元方法进行了仿真验证。

In this paper, a detail analysis of the circumferential through-crack in the cylindrical shells with different boundary restraints is performed by means of the elastic-plastic finite element method. The results obtained provide the application of some analysis methods of elastic-plastic fracture parameters such as Dugdale model with a necessary theoretical base.

本文针对柱壳周向壁穿裂纹，利用弹塑性有限元的数值解，在不同的约束条件下进行了较为详细的分析，获得了一些带有规律性的结果，为Dugdale模型等一些弹塑性断裂参数计算方法的应用提供了必要的理论基础。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。