疲劳破坏

疲劳破坏通常在没有明显预兆的情况下突然发生并造成严重事故。

Fatigue breakdown normally happens suddenly without any obvious symptom and bring out serious accident .

海底管线是海洋石油开发的重要组成部分，传统上采用钢管外覆混凝土作为海底管线，腐蚀、悬跨管线静力破坏和疲劳破坏是其失效的主要原因。

Submarine pipeline is an important part of marine petroleum development . Traditionally , concrete encapsulated steel pipe is used as submarine pipeline , and corrosion , spanning pipeline static breakdown and fatigue breakdown are the main causes of its failure .

NR胶料疲劳破坏寿命的断裂力学描述

Description of Fatigue Failure Life on Basis of Fracture Mechanics for NR Vulcanizates

时效对Ni-Cr奥氏体钢高温低周疲劳破坏的影响

Effect of Ageing on Fatigue Failure in Ni-Cr Austenite Steel at High Temperature and Low Cycles

但是块状的HA脆性大、力学性能差，在生理条件下易产生疲劳破坏，难以单独作为承载种植材料。

However , the bulk HA material has obvious brittleness and other limited mechanical properties . For example , fatigue damage can easily occur under physiological environment .

Cu-Pb滑动轴承合金接触疲劳破坏的研究

Contacting fatigue failure of Cu - 22 % Pb plain bearing alloy

因为疲劳破坏是一个损伤累积的过程，为此，需要研究PWR瞬态变化对300系列奥氏体不锈钢材料疲劳性能的影响。

Since the fatigue is the damage cumulative process , it is necessary to study 300 series austenitic stainless steel fatigue behavior with the plants transient changing .

制动抖动问题是汽车NVH重要的组成部分，严重影响车辆的舒适性，同时抖动也加速了相关部件的老化和疲劳破坏，从而影响到汽车的安全性，因此研究制动抖动十分的必要。

Brake judder is one of important parts for automobile NVH , which has a great effect on vehicle comfort and fatigue of related components .

lock-in现象会加速立管的疲劳破坏，立管一旦发生破坏，不仅工程本身会蒙受损失，还将引发严重的环境污染和次生灾害。

When lock-in state appears , it will aggravate the fatigue damage , not only causing huge loss of project itself but also leading to secondary haphazard and environment pollution .

如果都把一个构件的最终断裂作为疲劳破坏的定义，则S-N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。

If the failure is defined as the final fracture of a component , then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading .

由修正的Park-Ang损伤模型和低周疲劳破坏模型可分别推导出对应于结构破坏时的滞回耗能能力值。

The hysteretic energy capacity which corresponds to structural collapse state can be calculated from modified Park-Ang damage model and low-cycles fatigue model .

通过对蠕墨铸铁即紧密石墨铸铁（CGI）的微观组织、石墨形态、疲劳破坏机理的分析及在高温下的强度和应变的试验，说明了这种铸铁具有良好的疲劳可靠性和高温强度。

Analysis of the microstructure , graphite form , fatigue failure mechanism of compacted graphite iron ( CGI ), its high temperature strength and strain tests demonstrate that CGI has excellent fatigue reliability and high temperature strength .

基于ANSYS有限元软件，完成了从动盘超速旋转疲劳破坏模拟试验、离合器总成动力学有限元仿真试验、离合器稳定工作状态模拟试验以及基于LS-DYNA分析模块的离合器动态接合&轴向压缩耐久仿真试验。

Based on ANSYS , completing the ultra-speed spin simulation test of the automobile clutch spider , clutch-assembly dynamics finite element simulation test , stable working state simulation test of clutch and clutch dynamic axial compression simulation test based on the LS-DYNA module .

按照连接件疲劳破坏现象，将SSF法中的挤压应力集中系数从最大应力位置处修正到了垂直于总体载荷方向处，并给出了修正后的挤压应力集中系数Ktb拟合公式。

According to the phenomena of fatigue damage , the extrusion stress concentration factor at the position which is vertical to the overall load direction is acquired by a modification to the factor at the maximum stress position given in the stress severity factor approach .

另一方面，在短寿命区没有GBF区的断口的内部疲劳破坏的过程是：首先从夹杂的边缘出现裂纹，然后裂纹发生连续扩展。

After that , the crack grew continually . On the other hand , on the fracture surface without GBF area the fatigue crack was initiated around the inclusion and then propagated continually .

目的通过体外冷热循环机械载荷（TCML）咀嚼模拟实验，比较三种不同树脂粘接系统粘接Ni-Cr合金与牛牙釉质的抗疲劳破坏能力。

Objective To compare the fatigue resistant ability of three resin luting systems bonding Ni-Cr alloy to bovine enamel in an in vitro thermocycling and mechanical loading ( TCML ) chewing simulator .

另一方面，由于机架是在脉动载荷下工作，有发生疲劳破坏的可能，本文采用修正的Miner法则，结合机架的P-S-N曲线，通过FORTRAN语言编制程序，预测了机架的疲劳强度可靠性寿命。

On the other hand , the mill housing works under pulsating load , so the fatigue damage can take place . With Miner formula and the P-S-N curve of the mill housing , fatigue life is predicted through being programmed in FORTRAN language .

复合树脂间接法和直接法修复的疲劳破坏研究

The Fatigue Failure Study of Direct and Indirect Resin Composite Restorations

另外，持续的振动也加速了结构的疲劳破坏，影响结构寿命。

Additionally , prolonged vibration makes the fatigue of structures increased .

平台钢框架分离式柱的疲劳破坏

Fatigue Failure of Separate Steel Columns in a Working Platform Frame

挤压辊疲劳破坏的热力学分析

Analysis of the fatigue damage of pressing roll with thermodynamic theory

混凝土多轴疲劳破坏准则研究

Study on Failure Criterion of Plain Concrete under Multiaxial Fatigue Loading

抽油杆的疲劳破坏是抽油杆柱的主要失效形式之一。

Rod fatigue rupture is one of its main failure forms .

钢纤维混凝土试验研究与疲劳破坏模拟

Experimental Study and Fatigue Failure Simulation on Steel Fiber Concrete

重型钢焊接吊车梁结构的疲劳破坏控制

Controlling fatigue destroy of heavyweight and welding steel crane beams

双圆弧齿轮弯曲疲劳破坏试验及断齿实例分析

Bending Fatigue Failure Test of Double Circular-Tooth Gear with Broken Tooth Diagnosis

摩托车轮毂冲击及疲劳破坏有限元仿真分析

A Finite-element Emulation Analysis of Motorcycle Wheel Hub Impact and Fatigue Damage

内燃机连杆疲劳破坏机理研究综述

A Review of Study on Fatigue Mechanism of Connecting Rod

疲劳破坏随机预测模型的研究及应用

Study on Application of stochastic prediction model for fatigue failure

通过实验分析得到的在不同应力循环次数下疲劳破坏试件的主裂纹。

Main crack of fatigue sample under different stress cycles is analyzed .