应力

The total fatigue damage distribution is analyzed based on a Markov chain of the fatigue damage.

基于应力损伤的马尔可夫性研究了应力总损伤的分布规律。

A methed calculated the matrix of the stress ratio by the FEM is proposed and the value of element in the matrix of the stress ...

提出了利用有限元法计算弹性矩阵中应力比矩阵的方法，并对应力比矩阵的元素取值作了初步研究。

The stress distribution and peak stress values of Maximum principle stress and shear stress were used for comparison.

选择具有代表意义的最大主应力和剪应力指标进行结果的评价。

The synchronous response of tropical ocean to meridional and zonal wind stress has been studied.

考虑了经向风应力和纬向风应力联合作用下热带大洋的响应问题。

The results show that meridional wind stress of one class that diverges or converges affects velocity and geopotency field.

结果表明，只有一阶的经向风应力或具有辐合辐散的经向风应力才对最后的速度场和位势场造成影响。

Preiss angle (P .0l ), for the stick pestle can complement the strength for correcting the broadenth of the cross radius of the calcaneus, and the plaster splints are strong enough to fix the ankle firmly at the metatarsus posture.

第二部分为生物力学的实验研究，采用电测法与三维光弹性实验，研究跟骨在中立位及不同角度的跖屈位时应力分布的规律，分析跟骨在不同体位时应力和位移情况，探讨跟骨骨折的发病规律及合理的治疗方法。

Based on the marriage of finite elements method and multi-arch beam method, improving equivalent stress analysis method of arch dam is proposed and the effect of mesh size on arch dam equivalent stress is discussed in this paper.

在综合有限元和多拱梁法优点的基础上，提出了一种改进的拱坝等效应力分析方法，并通过算例探讨了网格尺寸对拱坝等效应力的影响。

The maj or obj ect of this paper is the medium.small size concrete dams that have been used for many years.They have the characteristic that the alteration of water height of reservoirs is unobvious and the dams, displacements are affected mainly by temperature.With a case,the method of stepwise regression is used to analyze the vertical displacement prototyDe observed data.Then regression equation is established,the relation of dam,s displacement with hydraulic pressure、temperature、time effect is analyzed and the displacement change rule is obtained,the dam'S displacement onlv dependent to temperature is received.According to the theory of Finite Elements Method,the quasi-stationary temperature field formula and temperature stress formula are deduced.The QTP program and TFEM3D program are written with FORTRAN.The same case is calculated through QTP program to solve the quasi-stationary temperature and through TFEM3 D program to solve the dam'S displacement and find tlle dam,s deformation rule.This rule is accordant with the regression,S resuIt.

本文主要针对运行期间库水位变化很小、坝体的位移主要受温度变化影响的中小型混凝土坝，结合工程实例，采用逐步回归的方法对垂直位移原型观测资料进行分析，建立回归方程，分析坝体位移与水压、温度、时效之间的关系以及位移变化规律，分析结果坝体位移只与温度有关，而基本上不受库水位变化和时效的影响；根据有限元原理推求了混凝土坝准稳定温度场公式和温度应力公式，利用FORTRAN语言编制出QTP准稳定温度场程序和TFEM3D位移场程序，对大坝的温度场和位移场进行计算，求出坝体结点的变温值和坝体结点位移值以及单元应力分量，分析得到大坝的变形规律与实测资料以及回归统计变形规律一致，说明对坝体准稳定温度场的研究是正确的。

In order to analysis the performance of the compound four-bar parallel micromanipulator, its concentrated stress model is analyzed and dynamic characteristic is modeled by using of Lagrange equation.

通过分析单、双平行机构的优缺点，设计了一种低耦合位移和集中应力的复合四杆机构微操作器，建立了集中应力模型，并利用拉格朗日等式对其动态特性进行了建模研究；采用有限元方法对微操作器进行了静态和动态分析，并对其静、动态特性进行了试验测试。

MAIN OUTCOME MEASURES: Standing on single or double feet was simulated to measure stress distribution, interface stress, and primary micromotion of femoral prosthesis in the three types.

主要观察指标：分别模拟单足和双足站立状态，测量3种股骨假体的应力分布、界面应力和初始微动情况。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷