查询词典 fem

The different locations of driving tips on the horn caused different elliptical trajectories, and how variation influence on motor mechanical output is studied through FEM method. The motor got best performance when positioning driving tips on antinodes of the bending wave.

用有限元法研究了不同形态的椭圆振动轨迹对电机输出性能的影响，发现当驱动足位于弯曲驻波波腹处电机性能最稳定。

There were six themes in this study. First of all, the geometry of in-vivo human pinna and ear canal was measured non-invasively. The 3D model of pinna and ear canal was reconstructed and then measured based on the image processed by HRCT. Second, the 2D curvature of in-vivo human ear canal was measured non-invasively. The angles and curvatures of superior and inferior walls of first and second bends were measured. The 2D curvature of ear canal was computed by sine and cosine laws. Third, the in-vivo human ear canal was reconstructed by RE. The distribution of sound field was analyzed by FEM. The data obtained in this study can be the reference for clinicians and audiologists. Fourth, the 3D model of earmold of hearing aids, including the ear shell and the housing, was reconstructed by RE based on the image of in-vivo human ear canal obtained by CT.

本研究主题其四，对於听力受损之患者往往皆须选配助听器帮助其放大声音，其中耳模是助听器的外壳，也是接触到耳朵的仪器，而耳道型助听器系位於耳甲艇及耳甲腔延伸至耳道第一弯道处，在制作耳模必须利用灌模方式来取得紧配之耳模，其中耳模在助听器的使用过程中，常因耳模松脱，无法与人耳道紧密配合而造成漏音，因此，利用活体人外耳道电脑断层影像，重建耳道型助听器耳模之三维立体模型影像，其中耳模包括了耳壳及耳模内部空间，并进行几何外型量测，探讨耳道型助听器之体容积大小，也提供了制作耳模时快速、精确度高、减少翻模及修模次数，可减少误差率之方法。

Based on the real construction process and field environment of Baoying Pumping Station ,a spatial-temporal dynamic numerical simulation of concrete temperature and stress field in the elbow-shaped inlet channel during the whole construction process of the pumping station was performed by use of FEM program.

根据宝应泵站的实际施工过程和现场环境，采用三维非稳定温度场和应力场有限元仿真程序，对该泵站肘形进水流道混凝土施工全过程的温度场和应力场进行时空动态仿真分析，分析了施工期泵站肘形进水流道混凝土结构裂缝产生的原因，提出相应的防裂措施。

Ratio of 4 2 ( males per 10 0 fem ales).

提供的资而制备的。

Based on the experience of compiling the program, the paper discussed some topics which should been taken note of while compiling a plane member structure FEM program that took the geometric nonlinearity into account as well as the material nonlinearity. With this program, the paper analyzed the effect of the factors on the anti-bending capability of externally prestressed concrete beams and come into some useful conclusions. The factors included: the rate of ordinary steel bars, the initial prestress of the external tendons, the shape of the external tendons, the position and number of deviators and the number of segments.

结合编程实践，本文讨论了编写考虑几何非线性和材料非线性的平面杆系有限元程序应该注意的一些问题，并应用所编的程序，对体外预应力混凝土梁的抗弯性能进行了普通钢筋配筋率、体外索的初始张拉力、体外索的配筋形式、转向块的布置和节段的数目等五个影响因素的分析，得出了一些有益的结论。

Based on this theory we deduce related equations of expansion force in plate and build elements of plate and magnetic field. After the analysis of magnetic field by FEM and some numerical computation we get the critical value of magnetic field when plate buckles.

在实现了用有限元对磁场进行三维分析基础之上，基于磁致应变假定，推导出相应等效载荷的计算公式，完成了恒定磁场作用下磁弹性矩形薄板的屈曲分析，求得了板屈曲时的磁场临界值。

With this model, the deformation and stress distributions of the flange joint are analyzed using ANSYS FEM software, and the influences of gasket properties, tube side pressure and shell side pressure, bolt pr.

本论文以U形管换热器法兰夹管板接头为研究对象，考虑垫片材料压缩的非线性特性和压缩-回弹时的时滞效应，将法兰接头各元件看成一个系统，研究各元件的相互作用，建立了管板-法兰-垫片-螺栓连接系统的非线性三维有限元分析模型。

Based on the FEM results, influences of bolts number n, flange plate thickness t and bolts edge distance factor η on the failure characteristics and loading capacity are studied.

利用有限元计算结果，分析了螺栓个数n，法兰板厚度t以及螺栓边距参数η等参数对节点破坏形态和承载力的影响。

In this dissertation, the arch bridge was discretized by the FEM according to its structural characteristics with the spatial beam element simulating the tied beams, end floor beams, middle floor beams, arch ribs and the like and with the spatial link element simulating the suspenders to erect the bridges spatial mechanical computational finite element model.

该拱桥的拱肋主要承受压力，弯矩较小；系杆梁虽然是一拉弯构件，但由于布置有多道预应力筋，截面全跨受压；吊杆张拉力比较均匀，且吊杆张拉力对桥面系的线形控制作用比较明显；桥梁各构件受力和变形均在桥梁设计规范规定范围之内，表明桥梁结构受力合理。

Based on the formers' studies, the behavior and mechanism of the structure are systematically analyzed by the FEM and the elastic-plastic theory in order to meet the need in engineering, and some valuable conclusions are obtained, which can be taken as references in design and construction.

本文在前人研究的基础上，根据目前深基坑复合土钉支护的研究现状和工程实际的需要，采用有限元和理论分析方法对深基坑复合土钉支护进行了系统全面的分析和研究，得到了一些有益的成果，对复合土钉支护的设计与施工具有重要参考价值。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。