查询词典 fem

In order to investigate the superplasticity of ceramic matrix laminated composite, the superplastic deep-drawing process was simulated by FEM.

为研究陶瓷基层状复合材料的超塑性能，对其超塑拉深成形过程进行丫有限元模拟。

Based on the nonlinear FEM analysis and experiment verification, the calculation method for deflection of concrete beams reinforced with FRP rebars is studied.

本文基于本课题组与国外已有试验研究，根据纤维塑料筋混凝土梁的非线性有限元分析与试验结果的验证，对纤维塑料筋混凝土梁挠度的计算方法进行了较系统的研究。

The proposed method directly gets deflection and moment of beam structures at the same time, and overcomes the shortcoming of low accuracy in beam moment calculation of displacement FEM.

BSWI混合有限元法可同时直接求解梁结构的挠度和弯矩，克服了位移有限元法弯矩求解精度不高的缺点。

From FEM, the contact stress obeys the semi-ellipse distribution and the Mises stress and shear stress are also consistent with contact mechanics theory, but there exists offset or deflection in the symmetric lines of stress distribution, which originates from tooth bending deformation.

由有限元方法得到的渐开线轮齿的接触应力符合Hertz理论中的半椭圆分布规律，Mises应力和剪应力分布也符合接触力学理论，但应力分布的对称中心存在偏离或者偏斜现象，分析认为，是由于轮齿弯曲变形造成的。

A number of numerical examples and applications were presented to verify the proposed Bezier-Based Element Method. The engineering cases include: the belt die for diamond synthesize, the main frame of wire-rounded press, the oil cylinder of open die forging press. The numerical results show that the BBEM has some good performances. With few elements, the BBEM can lead to a high accuracy. If using same DOFs, the computing precision of BBEM is remarkable higher than that of the conventional FEM.

通过大量的数值算例来考证所构建的各种类型单元，并应用于人造金刚石年轮模具、钢丝缠绕预应力机架和液压机工作缸等实际问题的结构分析；结果表明：所构建的Bezier耦合单元具有描述较大梯度变化场（如位移场、应力应变场等）的能力，该方法不改变单元的大小和形状，保持单元的自由度数不变，而通过调节中间可动节点的位置改变单元内部的场分布，只需少量单元即可较精确地模拟较大的梯度变化；可为有效求解高梯度问题提供新思路，对实际工程应用具有重要意义。

Based on the characteristics of staged-construction of foundation pit and the interaction of diaphragm walls-bracing-soil, a FEM method is provided in this paper to analyze the moment and deformation of the diaphragm walls in whole process of foundation construction, taking consideration of all the possible construction stages from the beginning of excavation to the end of foundation, and the influence of cap beam, pre-load of steel bracing, removal and change of bracing, and the corresponding computer program is composed.

本文首先基于杆系有限元计算原理、基坑工程分工况施工以及围护体、支撑、土体协同工作的特点，提出了一种基坑支护结构全过程内力及变形分析方法，编制了相应的计算程序。该法可考虑第一阶段挖土至±0.000结构楼层施工结束期间的所有工况，可考虑压顶梁对围护体变形的制约作用，以及钢支撑预加轴力、拆撑、换撑等因素的影响。

Aim at the false-solutions(the meaning is the solutions do not satisfy the divergence theorem) of FEM, impose the magnetic divergence conditions

针对有限元数值解中存在的伪解问题(即求出的解不满足相应的散度条件)，推导出了强加散度条件的磁场有限元系数矩阵的表达式，本文混合法中的有限元系数矩阵即是在此基础上形成的。

The FEM has been used to analyze the coupling seepage field and stress field under different water pressures based on the drainage tunnel project crossing the Yangtze River at the downtown of Chongqing city. The segment's stress distribution, displacements and pore pressure distributions are calculated.

结合重庆主排水过江盾构隧道的修建，针对不同水压情况下的盾构隧道，采用有限元法对围岩及结构的渗流场和应力场进行耦合分析，获得施工期管片应力、位移及孔隙水压力分布。

The vibration characteristics of the rotor system of the dredge pump in a dredger (1750 m3/h) are calculated and analyzed by using FEM.

主要研究内容包括： 1、介绍了旋转机械中各种典型故障产生的机理及识别特征，对信号处理及分析的方法进行了研究； 2、采用有限元方法对泥泵转子轴进行了模态分析和谐响应分析。

The influence of the eccentricity mass moment, position of mass center and the bearing stiffness to the vibration characteristics of the rotor system is discussed in detail; 3. To verify the exactness of FEM and learn the principle of vibration of dredge pump further, The orbit of the rotor shaft of the pump in the dredger is measured, the measurement results show: the repeat of the orbit of the rotor shaft is very bad when dredge pump is in the dredging mud condition.

模态分析确定了泥泵的振动特性；谐响应分析确定了泥泵转子轴在偏心力的作用下轴截面处的最大响应位移；研究了转子轴的质心位置、轴承刚度和质量偏心矩对转子轴振动特性的影响； 3、采用轴心轨迹法，实船测量了泥泵轴工作时振动响应值。

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。