| 1. | The cycled strain of the alloy is mainly related to the stress amplitude of cyclic loading 合金的循环应变值主要与合金的循环加载应力幅值有关。 |
| 2. | The essential reason of influence of stress amplitudes and waveforms on rock life was different dissipation of energy 结果表明,应力幅值、波形和频率都对岩石的疲劳寿命有显著的影响。 |
| 3. | It was emphasized that the fatigue life of rock sample was influenced by stress amplitudes , waveforms and frequencies 重点分析了应力幅值、波形、频率等因素对岩石疲劳破坏寿命的影响规律。 |
| 4. | However , the magnitude of stress should exceed a correspond value , if the stress has the ability to improve the flaw extending 但是就应力幅来讲,据保守的计算,也只有当应力幅值达到一定的数值后,才可能促使裂纹扩展。 |
| 5. | According to the paper , the reason of influencing the flaw progress has three factors , that is , the magnitude of stress , material and the mode of flaw 分析表明决定裂纹从萌生扩展到临界裂纹(这时裂纹发生失稳扩展)的扩展过程的主要因素有三个:应力幅值大小、材料、裂纹模式。 |
| 6. | Stress concentration measure on the model of boiler drum with two nozzles was executed and the testing results were compared with the asme criterion , experiential value and the value of finite element method respectively . this measurement result provides direction for evaluation of stress amplitude 设计模拟汽包进行应力测试,并与美国asme规范和经验公式计算值、有限元计算结果进行比较,为后续的低周疲劳寿命估算时交变应力幅值的确定提供依据。 |
| 7. | The third chapter analysis the affections which is the most importance affection in the process of flaw extending ignoring the reliability . the result illuminates that the magnitude of the stress is the most importance affection in the process of flaw extending when the material is determined 本文第三章分析了在不考虑分散性的前提下来考虑影响裂纹扩展寿命过程中哪些因素最为主要,分析发现应力幅值相对于材料属性来讲是更主要因素,当材料属性达到一定范围后,应力幅对裂纹扩展起到了决定性作用。 |
| 8. | The coupled effect is analyzed for an elliptical inhomogeneity under plane uniform loads and linear temperature change at infinity . the complex potentials are obtained for an elliptical inhomogeneity under plane uniform mechanical loading , uniform temperature change and uniform heat flow directed at any angle . the discussion is also given to the variation of the interfacial stresses with thermal parameters 分析了无穷远平面加载和线性温变的耦合效应,获得了椭圆夹杂体在无穷远平面均匀加载和均匀升温以及任意方向的均匀热流共同作用下的复势解答,并讨论了界面应力随各热载参数的变化规律,发现基体导热性能越好(与夹杂相比) ,界面应力幅值越大。 |
| 9. | Depending on the numerical model proposed , the effect of accelerations of soil skeleton and porous fluid on the dynamic response of elastic seabed is examined . it is possible that the amplitudes of effective stresses in large - thickness seabed to high - frequency waves would be underestimated in some regions if the accelerations were overlooked . the responses of layered seabed , seabed with gentle slope and the seabed unde 根据所提出的广义blot固结理论计算模型,通过线性数值分析考察了加速度项对海床动力响应的影响范围及影响程度,指出对于高频波浪下的大厚度弹性海床,忽略加速度项可能低估某些范围内的有效应力幅值,而传统的加速度作用判别准则并不总是成立的。 |