有限元法

In this paper, based on the knowledge about the change in the microstructures and mechaniacal properties of the cast irons with the influence of temperature, stress and thermo—mechanical circulated load in working cycle of ingot mould, the temperature and stress fields have been analysed by means of thermo-elastic-plastic finitive element, and futher, the behavior of thermal stress factors in every working cycle of the mould have been investigated, by which principles for optimum design of ingot mould's structure has been put out.

本文以钢锭模一个使用周期内的温度场、应力场及热一力循环载荷作用下铸铁的组织结构和力学性能的变化规律为基础。利用热弹塑性有限元法对钢锭模使用过程中的温度场及应力场进行了分析，并进一步研究了钢锭模在每个使用周期间的热应力参数的变化规律，提出了钢锭模结构优化设计的基本原则。

By means of thermo—elastic-plastic finitive element method, the thermo—mechanical loading chart of the ingot mould in working cycle is obtained; with this chart as a control factor, multicycle experiment is carried out on a thermo—mechanical simulater, resembling the circumstance of the real working condition.

即用热弹塑性有限元法获得钢锭模一个使用周期内的热—力载荷谱，在热力模拟实验机上用该热—力载荷谱控制进行多周期模拟实验分析。

In this paper, the finite element method is used to analyze the centri- fugal deformation of the currently-used hollow spherical rotor used in electrostatic gyro.

本文从静电陀螺捷联系统应用方案考虑，用有限元法分析我国现有结构静电陀螺空心转子离心变形，转子结构模型的内表面由赤道环、过渡圆和圆球面三部分组成，外表面为椭球面。

Keywords gypseous salt:flow constitutive equation;casing;cascous and elastic property;mechanics model;finite element method

盐膏层；流体；本构方程；套管；粘弹性；力学模型；有限元法

Finite element method with consideration of gyroscopic effect is used.

本文研究水轮发电机组的横向振动的自振特性，采用考虑连续点的陀螺效应的有限元法进行计算分析。

The discrete model of offset disk rotor is established with the finite element method. A two-degree-of-freedom model of ball bearing, including effect of Hertzian contact force, bearing internal clearance, is employed to investigate the dynamic characteristics of the rotor system supported by ball bearings.

应用有限元法建立偏置转子的计算模型，采用考虑轴承Hertzian接触力和内间隙等非线性因素的二自由度滚动轴承模型，建立了滚动轴承－偏置转子系统的非线性动力学模型。

Taking the structure of the gymnasium of Yellow River Hydrotechnical Vocational Institute as an example,this paper analyzes large-span arch-supported membrane structure using nonlinear finite element method and approaches to the characteristics of stressing and deformation of this kind of structure.

本文以黄河水利职业技术学院风雨球场拱支索膜屋盖为工程案例，采用非线性有限元法，对大跨空间拱支索膜结构体系进行了结构分析，探讨了拱-膜组合结构的受力和变形规律，检验了初步阶段膜找形结果的可靠性，为同类结构的工程设计提供经验积累。

This research indicates that the inequable thickness of the top and bottom panels can improve the stress and stiffness of light weight sandwich struc.

运用基于有限元法的优化设计方法，以上下面板厚度为设计变量，由新型铝三明治复合板结构为主构成的高速车辆车顶为对象，进行结构轻量化灵敏度分析和优化设计研究，获得了上下面板的优化厚度值分别为1.1或1.0mm和1.0或0.9mm。

On the basis of consulting lots of home and oversea data, using the finite elementmethod, this dissertation comprehends profoundly the dynamics and stability of curved pipes conveying fluid which centreline is inextensible and which boundary condition is clamped-free, clamped-clamped, clamped-pinned, pinned-pinned that are constantly used in engineering.

本文在查阅大量国内外研究资料的基础上，利用有限元法对中心线不可伸缩的固定-自由、固定—固定、固定—铰支、铰支—铰支四种工程中常见边界条件的输液曲管的振动及稳定性进行深入研究。

This paper analyzed the air-gap magnet field of U-shaped ironless PMLSM by finite element method,which could lower the difficulty of field analysis,with the help of Ansys and Matlab,and listed several result drawings.

采用有限元法分析U型无铁心永磁同步直线电机的气隙磁场，以降低其分析难度。

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％。