• 给出了叶盘结构振动应力数值预测方法

    The estimate method of vibrational stress of bladed-disk is given.

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  • 分别环境温度振动应力单独作用,各自优化四个应力水平。

    Four stresses levers are achieved through optimizing design under surrounding temperature or vibration stress alone affected.

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  • 提出了一种确定航空发动机叶片振动应力方法——断口

    A new method - reverse educing method is put forward int his paper, which is to estimate the vibration stress of aeroengine blade UN der rotating state.

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  • 噪声载荷作用下薄壁壳体振动应力响应分析疲劳研究重要任务之一

    Random vibration response analysis of thin-shells excited by acoustic loads is one of the important tasks of sonic fatigue investigation.

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  • 文中不仅介绍重力拱坝频率振型分布研究结果而且进行了振动应力计算

    The authors not only presented the results of the investigation about the frequency of vibration and its amplitude of massive arch dam, but also computed its vibration stress.

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  • 本文讨论振动技术可靠性工程中的两项最新应用即随机振动应力筛选振动故障诊断

    This paper discusses two new applications of vibration techniques in reliability engineering: random vibration stress screening and vibration fault diagnosis.

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  • 锥齿轮转速下,在槽底离心应力振动应力组合应力引起齿轮破坏主要原因

    At high gearing speed the combined stresses of centrifugal load and resonance vibration at the notches are the main cause for the catastrophic failure of the bevel gear.

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  • 方法应用可调脉冲频率振动应力刺激仪,43家兔尺骨骨折进行不同频率应力刺激

    Methods: The fractured ulna of 43 rabbits were stimulated by vibration stress force of different frequency.

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  • 叶片损伤进行修复适当减小叶片振动应力水平提高叶片外物损伤能力有效途径

    Repairing of the damaged parts and lowering of the vibration stress in the blade are effective measures to improve the resistance of the blade to FOD.

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  • 不对称栅非谐设计虽然会引起转速的较大幅值激成分,从整体考虑可有效降低叶片振动应力

    Though asymmetry stator mistuned may result in bigger amplitude aerodynamic force with the same frequency as rotational speed, it could reduce effectively the aerodynamic force of blade as a whole.

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  • 认为错频对振动应力影响正比于其对振动位移(振幅)的影响,可以系统最大位移的角度来评估叶盘转子失效风险

    The relations between vibration stress and vibration displacement are direct ratio, so the venture of bladed-disk assemblies invalidation can be evaluated according tot…

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  • 然后采用有限元数值计算方法对叶片进行静力分析模态分析裂纹应力强度因子计算,最后推出叶片在旋转状态振动应力大小。

    Through static, modal and crack stress intensity factor analysis, the vibration stress of blade under rotating state before fracture can be calculated out finally.

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  • 采用谱时域复现技术汽车电连接器进行振动可靠性室内强化试验研究接近实际工况-振动应力应力联合作用下的可靠性。

    Because there is not requirements of real vehicle road's signals in national standards, then the enhancement test's time can not be determined and the test results can not be appraised.

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  • 用于涡轮机叶片动态状态振动频率应力温度进行遥测。

    It is for telemetering the vibration frequency, dynamic stress and temperature of turbine blades under dynamic state.

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  • 激光雕刻技术进步减少材料应力振动有助于扩大增加未来销售应用潜力

    Advancements in laser engraving technology to reduce material stress and vibrations are helping to expand and increase the potential for future marketable applications.

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  • 根据接触悬挂系统中的接触线振动方程推导接触线应力均值方差计算公式

    Vibration equations of contact wires were used to derive the formulae for calculation of mean and standard deviations of stresses.

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  • 判断半刚性基层振动实能否造成下承层早期破坏,对半刚性基层在移动—振动压实荷载作用的下承层动态应力响应进行分析。

    The dynamic stress response of the lower course by moving-vibrating compaction on semi-rigid base was analyzed to judge whether it caused early wreckage to the lower course.

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  • 非常适合振动机械应力强烈腐蚀的环境中应用

    They are also well-suited for applications experiencing vibration, mechanical stress and strong erosive forces.

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  • 基于应变叠加原理基本思想。阐释金属振动塑性加工平均应力减小的原因,给出体积效应机理的数学描述。

    Based on the strain superposition principle, the phenomenon of mean stress reduction in metals plastic processes with vibration is explicated. and the mechanism of volume effect is described.

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  • 目前工厂一般采用回火时效振动时效法(VSR)对焊接构架中的残余应力进行消除

    At present, temper aging and vibration aging (VSR) are commonly applied to remove residual stress in welded frames in factories.

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  • 目前振动试验使用夹具传递应力往往存在较大的失真

    The stress transfer distortion exists in current fixtures on the vibration tables during testing.

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  • 首先介绍空空导弹环境应力筛选随机振动试验过程中出现振动应力情况,然后对出现振动应力的原因进行分析。

    Firstly, the situation of excessive dynamic stress during vibration test of environmental stress screening for an air-air missile flight control cabin was introduced.

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  • 系统进行发动机构件应力振动寿命分析

    The system can be used for the analysis of stress, vibration and life of the engine components.

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  • 牵引齿轮磨损产生齿偏差使得牵引构牵引电机振动加剧,噪声增大齿根应力大幅度增大。

    The tooth shape deviation in the worn traction gear will increase the vibration of traction gear and traction motor, increase the noise and increase by large scale the dedendum stress.

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  • 新型是利用变频振动实现应力精密下料

    New type of precision cropping machine utilizes variant frequency vibration to crop bar precisely with low stress.

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  • 为了探讨应力振动下土的动力特性,研制了球应力振动仪。

    A spherical stress shaking test apparatus is constructed in order to study soil dynamic properties under spherical stress shaking.

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  • 研究了45脉冲处理过程残余应力振动之间的相互作用关系

    The relationship between magneto-vibration and magnetic treatment induced tensile residual stress reduction in the steel 45 was studied.

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  • 在温度和振动综合应力作用航天连接器主要失效形式接触失效。

    Under the action of multiple stresses, contact failure is the main failure mode of aerospace electrical connectors.

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  • 温度循环随机振动环境应力筛选常用、最有效筛选应力

    Temperature circulation and random vibration are the most usual and the most effective screening stress of Environment stress screening.

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  • 温度循环随机振动环境应力筛选常用、最有效筛选应力

    Temperature circulation and random vibration are the most usual and the most effective screening stress of Environment stress screening.

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