查询词典 failure analysis

In light of the first expressway reinforced gabion retaining wall in China, which reinforced earth engineering of Xiangtan to Hengyang express highway section of K124 +300～K124 +895 in Hunan province, the external stability analysis of reinforced gabion retaining wall was analyzed by using the reliability analysis method and the reliability index and failure probability were given with this method. The results show that this method is simple, scientific and reasonable.

介绍了Rosenblueth矩估计方法的基本原理及其在加筋格宾挡墙外部稳定性分析中的应用，提出了加筋格宾挡墙外部稳定性可靠度分析方法，基于Rosenblueth方法开发了相应计算程序，研究了填料粘聚力c、内摩擦角φ、地震力、填土重度、车辆荷载以及加筋间距等重要参数对可靠度指标的影响，结合我国第一座高速公路加筋格宾挡土墙（湖南省湘潭至衡阳西线高速公路第十二合同段K124+300～K124+89段加筋土工程）运用可靠度理论分析其外部稳定性，得到了该挡墙外部稳定可靠性指标和破坏概率。

In consideration of the features of gearwheel drive box faults of the horizontal rotary screen roller printer and the basic principle of reversal frequency analysis and its advantages in failure diagnosis , reversal frequency analysis is adopted in fault diagnosis of gearwheel drive of the printing machine and better results are obtained.

介绍了卧式圆网印花机齿轮传动箱故障的特点以及倒频谱分析的基本原理和在故障诊断中的优点。

According to in-situ construction real time observation and inverse analysis results, refinement numerical artificial analysis on a group of headrace tunnels was conducted and influence of different construction schemes and support parameters on rock mass deformation and failure behavior were researched to provide quantized data and technical aid for project construction decisions.

基于跟踪施工的现场实时观测和反演分析结果，对引水发电洞群进行了精细化数值仿真分析，研究了不同施工方案和支护参数对岩体变形、破坏特性的影响，以便为工程的施工决策提供量化资料和技术支持。

The failure of a gear shaft was analyzed by SEM analysis,macrograph,metallographical examination,mechanical test,chemical analysis and etc.

采用扫描电镜、低倍检验、金相检验、力学试验和化学分析等方法，分析了人字齿轮轴发生劈裂的原因。

Heavy-loaded pedrail vehicle,driving clutch,grease lubrication,failure analysis,surface analysis

中文关键词：重载履带车辆；主离合器；脂润滑；失效分析；表面分析

The main research work and its results are: 1Empirical results are analysed for the relations of fault displacement and earthquake magnitude, and difference between permanent ground deformation and maxium dynamic relative displacement on the two sides of fault; 2An analytic method is proposed for resopnse of a buried pipeline due to earthquake fault movement; 3A new shell model with an equivalent boundary and relted finite element analysis method are proposed for estimating response of a buried pipeline under large fault movement; 4By the proposed method, damage performance of water supply steel pipelines with large diameter is simulated to the real cases in Kocaeli Earthquake and Ji-Ji Earthquake, and simulating results show the real failure mode of pipes is revealed; 5Effects of overlying soil and soft/hard interlayers are analyzed on ground rupture mode and degree due to earthquake fault, and some earthquake rupture phenomena in soil layers are theoretically described for the first time; 6Pipeline response characters are discussed for the case of considering effects of soil layers on ground rupture mode; 7Research results and proposed method are applied in seismic analysis of pipline acrossing fault in the Gas Tansportation Project from West to East in China.

主要工作和成果包括：1）分析了不同断层位错形式下地表破裂位错量与震级之间的经验关系，并基于集集地震近断层记录分析了断层两侧永久地面变形和地震动相对位移幅值之间的差别，为合理地考虑地震断层位错地面变形动态影响提供了依据；2）发展了断层位错地面大变形下管线反应分析模型并给出物理概念明确、简单实用的解析分析方法；3）建立了断层位错下埋地管线反应分析的等效边界壳模型有限元方法，方法中引入了以非线性弹簧形式模拟离断层较远处管段影响的等效边界，简化了计算模型并突出了近断层处管体反应；4）利用等效边界壳模型方法，对土耳其地震和集集地震中大口径埋地管线震害进行了模拟，结果表明所提方法可以更清地解释震害所表现的管体破坏特征；5）研究了覆盖土层和软硬夹层的存在对断层位错地面破裂形式和程度的影响，首次从理论上解释了某些地震地表破裂现象；6）探讨了考虑土层对断层位错地面变形影响的管体反应特征；7）本项目成果已在西气东输工程的管道跨断层抗震问题分析中得到了应用。

According to the controllability and observability theory of the system and based on the analysis of the redundancy of the components in the control system, the fault-tolerant condition in the failure system were discussed and used for a quantitative fault-tolerant analysis for the pressure control system in a pressurizer.

热力系统的控制是至关重要的，控制系统的性能直接影响热能动力装置的安全、正常运行，容错控制的目的就是为了提高控制系统的可靠性和安全性。在复杂控制系统的运行过程中，经常会随机地出现一些故障，如系统参数跳变故障、传感器故障、执行器故障等[1] 。

This work is supported by the Ministry of Science and Technology of China (No. 2004BA901A02). Three new theoretical models are proposed in this paper, which are three dimensional stability analysis model of landslides with single slip surface, three dimensional stability analysis model of landslides with multiple slip surface and failure time prediction model of landslides. Moreover, the kinetic rule of sliding body and rockfall are also discussed in this thesis.

在国家科技攻关计划"西部开发科技行动"重大项目(编号：2004BA091A02)的资助下，本文建立了单滑面滑坡三维稳定性分析模型、多滑面滑坡三维稳定性分析模型和滑坡失稳时间预测模型，同时还对滑落体和崩落体的运动规律进行了探讨。

After introducing failure model of PCPCF, the dissertation has deduced the circular arc method formula of PCPCF's total stability analysis. The analysis shows that PCPCF can improve the stability of natural foundation. At the same time, the dissertation has also perfected stability calculation method of composite foundation which has caverns.

介绍了复合地基的破坏模式之后，推导了素混凝土桩复合地基整体稳定性分析的圆弧法公式，分析表明素混凝土桩复合地基有利于提高天然地基的抗滑稳定性；另一方面完善了洞室复合地基稳定性的计算方法。

In order to investigate buckling mode, buckling load and failure mode of structure, shear experiments were conducted for stiffened thin-walled composite plate. Finite element method was also used to analyze the buckling behavior of that composite structure. Analysis results reveal buckling mode and buckling loading of finite element analysis are accordable with experimental results.

通过对复合材料薄壁加筋板结构进行剪切载荷下的屈曲试验研究，得到结构的屈曲模态、屈曲失稳载荷以及破坏形式，并通过有限元方法对结构的屈曲进行数值分析，分析得到的复合材料薄壁加筋板结构的屈曲模态和试验结果一致，屈曲载荷与试验结果吻合较好。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。