剪力

Membrane effect of steel is evolved from the technology of stressed skin in steel structure, of which the characteristic is the sufficient utilization of the effect of tensility-resist.

钢板薄膜效应是从钢结构的受力蒙皮技术中拓展而来的，其主要特点是能够充分利用钢板在面内的抗剪和抗拉效应。

Membrane effect of steel plate is evolved from the technology of stressed skin in steel structures,of which the characteristic is the sufficient utilization of tensility and shear resistance in the steel plate.

钢板薄膜效应是从钢结构的受力蒙皮技术中拓展而来的，其主要特点是充分利用钢板在面内的抗剪和抗拉效应。

Then after a semi-rigid joint behavior can be modeled as a finite stiffness rotation spring, base on rotation and displacement equation derive the element stiffness matrixes with semi-rigid connections where the effects of jointed flexibility and shear forces in the connection deformations have been considered in and fixed-end forces are modified. Finally, a program for calculating system reliability of semi-ridge steel frames with Monte carlo method and finite element analysis has compiled for calculating and analyzing.

接着本文在介绍和分析半刚性连接弯矩和转角关系模型的基础上，用带有转动刚度的弹簧表征半刚性连接，推导出半刚性连接的刚度矩阵，对固端力进行修正，同时考虑了剪切变形的影响，编制了半刚接钢结构平面框架的有限元程序BHPFL，并在其基础上编制了基于蒙特卡洛法的Monte Carlo-BHPFL 有限元相结合的方法，进行体系可靠度的分析。

Main Products:"Air Force" brand series of shearing machine, bending machine, three?

主要产品：&航力&牌系列剪板机、折弯机、三？

First, natural frequency of Euler-Bernoulli beam with elastic bearing and without the axial force is put forward. And numerical method is used to solve the equation by a program designed by the author, and the influences of shearing deformation and rotatory inertia on frequency are analyzed.

首先对不考虑轴力影响的弹性支座Euler-Bernoulli梁的固有频率进行了推导，并用自编程序进行了数值法求解，同时分析了剪切变形和转动惯量(Timoshenko梁)对频率的影响。

The faults include the fracture of saddle support mat , the breakdowns of saddle support bolt and pin spindle.

其中，鞍座底板断裂、鞍座连接螺栓和销轴断裂，通过断口形貌和受力分析，判断故障原因为典型的疲劳断裂；大小齿面磨损变形严重是齿轮硬度不足、齿面接触应力超过材料抗剪屈服极限及润滑方法不当造成。

The faults include the fracture of saddle support mat, the breakdowns of saddle support bolt and pin spindle. Based on the analysis on the fracture and surface, the fault causes are analyzed, for the conclusions of the normal fatigue fracture, as well as the deficient gear hardness, higher contact stress of tooth face than the yield limit under shear of material and improper lubrication method, which bring serious abrasion deformation of tooth face.

其中，鞍座底板断裂，鞍座连接螺栓和销轴断裂，通过断口形貌和受力分析，判断故障原因为典型的疲劳断裂；大小齿面磨损变形严重是齿轮硬度不足，齿面接触应力超过材料抗剪屈服极限及润滑方法不当造成。

The vibratory equation and vibratory characteristics of tie and ballast are given. The results indicate that the effects of transverse shear deformation and axial force on vib...

计算结果指出，钢轨的横向剪切变形及其承受的轴向力对钢轨的振动水平、轮轨间的动作用力均有影响，特别是在高频域，有着不可忽略的影响。

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