The contact finite element method is used in present paper to analyze stress of bolt connection structure.
应用接触有限元方法，对螺栓联接结构进行了应力分析。
Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crack first, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下，强度相对较低的螺栓会先产生裂纹，进而发生疲劳断裂。
The monitoring project of Zhouning Hydropower station underground plant and water intake system including monitoring of the surrounding rock deformation, bolt stress, osmotic pressure and joint.
周宁水电站地下厂房及引水系统的监测项目包括围岩变形监测、锚杆应力计监测、渗透压力监测、测缝计监测。
It is shown that the characteristics of shear stress acting on bolt vary in different zones zone of surrounding rock and are reflected in the axial stress distribution of bolt.
结果表明，在围岩不同区内，锚杆所受剪切力具有不同的特点，而且，锚杆所受剪切的特点在锚杆轴力分布中得到了反映。
As the bolt tension increase, the tension of rail web, stress of joint bar and stress of joint bolt would increase accordingly, but the displacement of rail would become smaller.
螺栓扭矩增大，接头区钢轨轨腰拉力、夹板应力、螺杆内应力都会增大，而钢轨位移会随着螺栓扭矩的增大而减小。
In order to ensure the reliability of flywheel bolt connection, stress analysis of bolt is performed using contact analysis method.
为了确保飞轮螺栓连接的可靠性，采用接触分析法对螺栓进行了应力分析。
By computer simulation, we analysis and study the law of wall rock stress distribution, deformation, the axial force of bolt and the roof-off-strata.
通过计算机数值模拟分析研究了锚杆支护回采巷道围岩应力分布、围岩变形、锚杆轴力及顶板离层规律。
This paper summarizes simply the history of bolt testing technique, describes in detail stress wave reflection method.
笔者对锚杆检测技术的历史进行了简单的总结，并详细、重点介绍了目前被广泛使用的应力波反射法。
We think that the method of estimating maximal pre-applied stress of the working bolt can provide a reference for preventing further fatigue fracture of boxter bolts.
认为用估算螺栓工作时的最大预紧应力的方法，对防止埋头螺栓疲劳断裂再次重复发生有一定的参考价值。
This paper analyses the special points and mechanism of bolt connection mode on type HXD1 locomotive traction base, and shows the effect of bush to bolt application reliability by stress calculation.
分析HXD1型机车牵引座的螺栓连接方式中的特殊点及其机理，并通过受力计算说明了衬套对螺栓使用可靠性的影响。
According to the numerical simulation of heavy-duty diesel engine to raise power, two methods to assess the strength of cylinder head bolt, static calculation and fatigue stress check, are introduced.
结合大功率柴油机提升功率的数值计算工作，介绍了评估气缸盖螺栓强度的两种方法：静强度分析法和疲劳强度校核法。
The pretightening force of FRP construction bolt joint has been researched in the theory of bolt washer stress.
应用螺栓-垫圈应力理论对FRP结构搭接点预紧力进行了研究。
Manufacture method of anchor bolt plate is introduced and stress distribution in laboratory is analyzed in this paper.
介绍了锚杆测力托盘的制作方法，在实验室对锚杆托盘的应力分布进行了分析。
By using the finite element method, the dynamic stress caused by vertical contact impact between bolt locking surface and barrel extension locking surface of a new rifle was studied.
采用有限元方法研究了某新型自动步枪枪机闭锁面与节套闭锁面间垂直接触碰撞的动应力。
The design of a new pre-tensional structure (FROMOpreload nut) applied in the large size of screw thread was introduced, the pre-load bolt is only beared with the pure tensile stress.
介绍了一种应用于大规格螺纹预紧的新型结构FROMO预紧螺母的结构设计，该结构螺栓只承受纯拉应力。
On the basis of relationship between bolt axial stress and rate of change in ultrasonic wave transmission time, the author has developed a device to directly measure axial stress in bolts.
根据螺栓的轴向应力与超声波传播时间变化率的关系，作者研究了一种可直接测量螺栓轴向应力的仪器。
An improved method of stress analysis about bolt screw with interference fitting is provided as the first step of fatigue life-prediction for the joint.
针对过盈螺纹的疲劳寿命估算进行了工作，求解应力是寿命估算的第一步。
This paper focuses on the effects of the distributed bolts and bolt-holes on the shell flange-end bending stress, and suggests a more practical calculation model on shell-end stress.
本文着重分析了离散分布的螺栓及螺栓孔对筒体端部应力的影响，对筒体端部的应力计算提出了一个更接近实际的计算模型。
It is possible for the bolt stress to decrease after initial tightening, because ofslow creep or relaxation of the gasket, particularly in the case of the "softer" gasket materials.
[S-1]在螺栓被初步紧固之后，由于垫片的缓慢蠕变或松弛，特别是采用的是“比较软的”垫片材料，则螺栓应力的下降是可能的。
Practice showed that high pre-stress anchored bolt with high strength was effective method for controlling deformation of deep coal roadway with combined roof above gob.
实践证明，高预应力高强锚杆组合的围岩强化控制技术是控制深井厚复合顶板采空区上方煤巷围岩变形的有效方法。
An analysis of anti-pulling mechanism was discussed on the base of the shear stress-displacement characteristics between grouted bolt-the soil layer.
针对锚杆-土层间的剪应力-位移特点，深入分析了灌浆锚杆抗拔机理。
When the bond between bolt and grout is intact the shear stress distribution of the bolt side is described by exponent curve.
当锚杆与砂浆的粘结未破坏时，以指数曲线来描述锚杆的侧剪应力分布；
The distribution curves of the shear stress and axial force along the axial direction of the GFRP bolt were obtained using MATLAB.
利用MATLAB软件编制程序得到GFRP锚杆的剪应力及轴力沿杆体轴向方向的分布曲线。
The pre-stress is an important parameter of the bolt support and would have an important influence to the mine roadway support effect.
预应力是锚杆支护中重要的参数，预应力对巷道支护效果有重要影响。
The bolt with lower stiffness accelerates the decrease of compressive stress in gasket during pressure loading, which is harmful to joint tightness.
内压加大时，刚度小的螺栓将加速垫片压紧应力的降低，对紧密性不利。
The bolt with lower stiffness accelerates the decrease of compressive stress in gasket during pressure loading, which is harmful to joint tightness.
内压加大时，刚度小的螺栓将加速垫片压紧应力的降低，对紧密性不利。
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