因此，它是一种研究焊接结构疲劳损伤过程的新途径。
So, it is the new method of researching welded structure fatigue damage process.
计算结果表明，非线性波浪载荷对船体结构疲劳损伤分析具有重要影响。
Calculation results show that nonlinear factors are important for fatigue strength analysis of ship structures.
本文的主要目的是研究非线性波浪载荷作用下多种应力成份组合的船体结构疲劳损伤计算。
The major purpose of this thesis is to do some research work on calculation of fatigue damage of ship hull structures with combined bending stress under nonlinear wave loads.
首先因较小的波浪载荷引起一定的疲劳损伤并造成极限承载能力的下降，然后因极限波浪载荷而引起结构的完全破坏。
At first, small wave load have caused an amount of damage and decrease the ultimate bearing capability to the structures, then fatigue load have caused wholly destroy.
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。
Optimization design method of welded structure was put forward with welded joint fatigue damage as constraints.
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 of ship and ocean engineering structures will caused by fluctuation loadings, such as wave loading, during their service time.
从这个现象中获得的信息表明，它非常适宜应用到宇航结构件在生产线的无损检测和疲劳损伤预报。
It is well suited for monitoring in line production in structural components for the aerospace about detection of damage and progressive fatigue damage.
搭接件是飞机结构中容易产生微动疲劳损伤的部位。
Fretting fatigue usually occurs in lap joints of aircraft structure.
本文阐述了已有的混凝土结构疲劳累积损伤理论和疲劳损伤识别原理。
In this dissertation, the theory which is known of concrete structure fatigue cumulative damage and damage detection is narrated.
为了保证结构在设计寿命期内的安全使用，有必要对结构进行整体疲劳分析，评估其在设计年限内的疲劳损伤程度。
In order to ensure structural safety in the design working life, it is necessary to carry out integrity analysis of fatigue and to evaluate the degree of fatigue damage on the structure.
交变冰力引起的结构交变应力必将导致结构的局部疲劳损伤。
Alternating stress produced by alternating dynamic ice force evidently results in the partial fatigue failure.
采用该方法可计算出真实运行工况下结构焊缝的疲劳损伤和寿命情况。
With the effective seam weld fatigue life prediction method, the fatigue damage and life of the seam weld under actual vehicle operating conditions can be calculated.
在损伤力学的基础上本文提出了深水海洋石油钢结构估算疲劳寿命的新方法。文中给出了石油大学新建立的疲劳损伤数学模型。
In this paper, a new method based on the theory of damage mechanics is suggested to estimate the fatigue life of offshore petroleum steel structures.
监测结果表明埋入的光纤光栅可以方便地监测汽车的流量及其可能的疲劳损伤，为桥梁结构的健康诊断提供依据。
The monitoring results show that traffic fluxes and possible fatigue damages can be monitored conveniently by embedded FBG sensors, and information can be provided for structural health diagnosis.
对一条实船的分析说明，腐蚀和疲劳损伤虽然短时间内的破坏并不显著，但积累到一定程度，对船体结构的影响相当大。
The tank case study shows that in short time period fatigue and corrosion damages could be neglected, but the damages could affect ship strength obviously when they accumulate to some degree.
金属材料的疲劳损伤是工程界早已发现的问题，金属结构的疲劳破损问题正日益突出。
The fatigue damage of metal materials has been recognized in engineering field for a long time. And the fatigue damage problem of metal structures has become more and more serious.
为了验证改进后托架结构的动力性能，本文建立了改进后的油泵托架的有限元模型，并利用该模型对改进后的油泵托架进行了模态分析和随机振动分析以及疲劳损伤计算。
In order to validate the dynamic characteristic of the improved fuel pump bracket, the new FEA model is set up and the modal analysis and the spectrum analysis are carried out.
为了验证改进后托架结构的动力性能，本文建立了改进后的油泵托架的有限元模型，并利用该模型对改进后的油泵托架进行了模态分析和随机振动分析以及疲劳损伤计算。
In order to validate the dynamic characteristic of the improved fuel pump bracket, the new FEA model is set up and the modal analysis and the spectrum analysis are carried out.
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