The example demonstrates the capacity of the separation of the fatigue-damage and the creep-damage, and the ability to predict the fatigue life with the creep of the polymethylmethacrylate.
算例结果表明，损伤分离法可以分离蠕变疲劳产生的蠕变损伤和疲劳损伤，很好预测疲劳和蠕变共同作用下的疲劳寿命。
So, it is the new method of researching welded structure fatigue damage process.
因此，它是一种研究焊接结构疲劳损伤过程的新途径。
Therefore, it is necessary to analyze the mechanism of the fatigue damage of bridge expansion device and estimate its fatigue life by theories and experiment.
因此有必要通过实验及理论研究等工作，对公路桥梁伸缩装置进行疲劳破坏机理分析和疲劳寿命估算。
According to fatigue damage accumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.
依据疲劳损伤累积理论，确定了公轨两用钢桁桥轨道横梁与整体节点连接头验证性疲劳试验的试验荷载。
The photographs of the sweep electron microscope show that fatigue damage are caused mainly by microcracks and impurities of metal.
通过疲劳断口的电镜扫描试验，证明防爆膜的疲劳破坏是由存在于金属内部的微裂纹和杂质所引起。
In this paper a new criterion for thermal fatigue damage was proposed to evaluate the thermal fatigue performances of metallic materials.
本文提出一种新的热疲劳损伤判据，用以评估金属材料的热疲劳性能。
Fatigue damage is the main destroy mode for the machinery parts and engineering structures under alternate loading over a long period of time.
对于那些长期经受交变载荷作用的机械零件和工程构件，疲劳破坏是一种主要的破坏模式。
It is conducted a theoretical analysis of improving the residual fatigue life of a steel plate with central fatigue damage cracks, which is strengthened by CFRP.
对含中央疲劳损伤裂纹钢板粘贴CFRP加固，改善其剩余疲劳寿命进行了理论分析。
Fatigue damage of ship and ocean engineering structures will caused by fluctuation loadings, such as wave loading, during their service time.
船舶与海洋结构物在其服役过程中受到波浪等载荷的交变作用而引起结构的疲劳损伤。
Fatigue damage is the energy dissipation process.
疲劳损伤过程耗散了能量。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
It may decrease fatigue damage causing by rolling contact and side damage on track and prolong rail service life 0.5 ~ 1 time by means of grinding rail track.
通过对钢轨的修磨可减少由于滚动接触疲劳引起的钢轨损伤，减少钢轨侧面磨损，可延长钢轨的使用寿命0.5 ~1倍。
By analysing individual parameter, the cause of fatigue damage of water tank was found out, the advice of improvement was put forward.
通过对各阶模态参数的分析，找出了水箱疲劳损坏的原因，并提出了进一步改进的意见。
The Corrosive fatigue damage of concrete is the result of the compound action of alternating stress and corrosion medium, and the study about this has just been.
混凝土腐蚀疲劳破坏是交变应力与腐蚀介质耦合作用的结果，对其研究目前国内外还仅出于理论探索阶段。
In this paper, the fatigue damage mechanisms of concrete under repealed loads are studied.
本文研究了水泥混凝土在重复荷载作用下的疲劳损伤机理。
The results show that multiaxial fatigue damage parameter presented in this paper may be used under either proportional or non proportional loading.
结果表明，本文所提出的多轴疲劳损伤参量既可用于多轴比例循环加载，也可用在非比例加载条件下。
Then, constitutive equations are written for plastic, creep and fatigue damage phenomena.
从而建立了塑性、蠕变和疲劳损伤现象的本构方程。
Fatigue damage once invalidated railway bridge, fatigue crack ever resulted in collapse of artesian well desk in ocean.
疲劳损伤曾使铁路桥梁失效，疲劳裂缝的存在使海洋钻井台倒塌倾覆，酿成悲剧。
The residual strength of the aluminum alloy fuselage panels with widespread fatigue damage (WFD) is investigated experimentally.
进行了广布疲劳损伤（WFD）铝合金机身壁板的剩余强度试验研究。
Optimization design method of welded structure was put forward with welded joint fatigue damage as constraints.
提出考虑焊接接头疲劳损伤约束的焊接结构抗疲劳优化设计方法。
CONCLUSION: tendon can adapt to the exercise training, and there is fatigue damage in tendon during this adaptation process.
结论：肌腱对运动训练可发生适应性改建，在此过程中伴随着疲劳性损伤发生。
The advantages and disadvantages of the fatigue damage cumulative rules are discussed.
比较各种疲劳损伤累积理论计算方法的优缺点。
The paper points out that reed failures result from the synthetical action of vibrating wear, grain wear, fatigue damage and last, impact action-the most dreadful damage.
文中指出，钢筘的失效是振动磨损、磨粒磨损、疲劳破坏和冲击损坏综合作用的结果，其中冲击损坏的危害作用最大。
Domestic and international research of fatigue damage mechanism, test technique and fatigue life prediction of inservice railway steel bridges is summarized and forecasted.
本文对目前国内外有关钢桥的疲劳损伤机理、检测技术及疲劳寿命预测的研究做了总结和展望。
The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.
通过疲劳损伤准则，导出疲劳裂纹稳定扩展速率的计算公式。
Therefore, the distribution configuration of the fatigue damage threshold is the same as the distribution configuration of lineal cumulative damage.
因此，新定义的疲劳损伤阀值与线性累积损伤之间在分布形态上是一致的。
The fatigue damage cumulative rule plays a key role on the structure design against fatigue.
疲劳累积损伤分布规律是结构疲劳可靠性分析与设计的关键内容之一。
The damage evolutionary path and the damage equation which depicts the fatigue damage accumulation are introduced also in this paper.
文中给出了损伤演变路径和描述该损伤演化行为的疲劳累积损伤方程。
According to the correlation between accumulative damage and loading level the fatigue damage model is established.
依据损伤演变与损伤状态、加载条件间的相关性，建立了相应的疲劳损伤模型。
According to the correlation between accumulative damage and loading level the fatigue damage model is established.
依据损伤演变与损伤状态、加载条件间的相关性，建立了相应的疲劳损伤模型。
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