Fatigue Invalidation Analysis

In view of the fatigue invalidation of submarine pipeline span caused by vortex-induced vibration, the reliability analysis method of nonlinear vortex-induced vibration invalidation of pipe]the span is proposed.

针对由涡激振动引发的海底管跨疲劳失效,提出管跨非线性涡激振动失效可靠性分析方法,引入波浪和海流对管跨的联合作用以及管跨所受轴力,并考虑管跨海底土壤支撑端的实际工况,建立了管跨段的垂向非线性振动方程及其边界条件,通过模态分析,求得振动方程的固有振型,并以此为基础,推导和建立方程解的关于时间域的微分方程组,运用时频分析方法,由波浪谱推得的波、流力谱作为振动方程的输入谱,计算得到相应的输出谱,进而确定位移和应变等各种响应随机过程的概率分布,结合可靠性理论确定管跨的疲劳失效概率,最后,通过实例的计算与分析,确定几个重要参数对管跨疲劳失效的影响程度。

The vortex induced vibration of pipeline span is the leading factor of fatigue invalidation of pipeline, and is the most important confronted and urgent to be solved problem during the reliability design and evaluation of pipeline span.

管跨的涡激振动是引发管跨发生疲劳失效的主要因素之一 ,也是管跨可靠性设计、可靠性评估工作所要解决的主要问题。

Dynamic reliability analysis of offshore platform considering fatigue failure;

考虑疲劳失效的海洋平台动态可靠性分析

Fatigue Failure Analysis of Rolling Bearings;

滚动轴承疲劳失效过程的分析与研究

Microscopic mechanism of XCQ16 and 20Mn2 axle steel fatigue failure

XCQ16和20Mn2车轴用钢疲劳失效的微观机理

Application of Fatigue Analysis by ANSYS in Fixed Mould Plate of Injection Machine;

基于ANSYS的疲劳分析在注塑机定模板中的应用

The detailed fatigue analysis to shallow water platform structures;

结构自振周期较大的浅水平台应进行详细疲劳分析

Based on the study on types and reasons for thermal fatigue failure of hot-extrusion dies made form 5Cr4W5Mo2V steel,the ways and methods of improing resistance to thermal fatigue of the dies have been involved.

通过5Cr4W5Mo2V热挤压凸模热疲劳失效形式及原因的研究,探讨了提高模具热疲劳性能的途径与方法。

Surface Contact Fatigue Failure Analysis on the Cam of CNG Engine

CNG发动机凸轮表面接触疲劳失效分析

An Analysis on Creep-Fatigue Failure of Main Steam Pipe of 12CrMoV Steel

12CrMOV钢主蒸汽管道的蠕变疲劳失效分析

Fatigue failure analysis of steel structure welded joint under cyclic loading

循环载荷下钢结构焊接接头的疲劳失效分析

The Studay of Rolling Contact Fatigue Failure and Tests on Super Hard Coating Parts

超硬涂层零件滚动接触疲劳失效分析与试验研究

Analysis of Sucker Rod & String Fatigue Failure on Heat Treatment Factor

抽油杆柱疲劳失效的热处理因素分析

Mechanical Performance and Fatigue Failure of Bottom Hole Assembly;

下部钻具组合力学特性分析及疲劳失效研究

Failure Analysis on Water-wall Tube Thermal Fatigue

电站锅炉水冷壁管热疲劳开裂失效分析

Contact Stress and Fatigue Wear Failure Analysis of Medium-sized CNG Engine Cam/Tappet;

中型CNG发动机凸轮/挺柱接触应力与疲劳磨损失效分析

Equivalent Stress Severity Factor Approach for Fatigue of Multi-fastener Plate

连接件疲劳寿命分析的等效SSF法

Study of the Effect of Chinese Herb Medicine "Jian Li Fang" on Anti-exercise Fatigue;

中药“健力方”抗运动性疲劳的药效分析与探讨

aircraft fatigue data analysis system

飞机疲劳数据分析系统

Fatigue is the main rupture mode of bolt.

疲劳破坏是螺栓失效的主要形式之一。

Research on Prediction of Damage Failure and Fatigue Life for Composite Bolted Joints;

层合板接头损伤失效与疲劳寿命研究

Research on Fatigue Invalidation of Helical Outer Spring for Type K2 Bogie;

K2转向架圆柱外弹簧疲劳失效研究

Microscopic mechanism of XCQ16 and 20Mn2 axle steel fatigue failure

XCQ16和20Mn2车轴用钢疲劳失效的微观机理

Experimental and Failure Model Study of Low Cycle Fatigue Considering Ratcheting Effect;

考虑棘轮效应的低周疲劳实验与失效模型研究

Analysis on Fatigue Influencing Factors and Notch Effect of High Strength Bolt Used in Grid Structure with Bolt-sphere Joints;

螺栓球节点网架用高强螺栓的疲劳影响因素及缺口效应分析

Analysis on Time-Effect Relationship about Anti-Fatigue of Microdose Sodium Salicylate in Mice;

微量水杨酸钠对小鼠抗疲劳作用的时效关系分析