| 1. | Uniaxial tension and cyclic deformation behavior of 16mn zn laminated aseismic composites
抗震复合材料的单向拉伸与循环变形行为 |
| 2. | Visco - plastic constitutive model for non - proportionally multiaxial cyclic deformation of ss304 stainless steel at high temperature
304不锈钢高温非比例多轴循环变形行为的粘塑性本构描述 |
| 3. | The cyclic deformation behavior for zircaloy - 4 , n18 alloy and n36 alloy at room temperature and 400 has been investigated in a single - sample test or multi - sample test
用单试样法或多试样法，研究了错合金在室温和400的循环变形。 |
| 4. | It is shown from the research that the non - proportionally multi - axial strain - controlled cyclic deformation of 304 stainless steel at high temperatures has distinct dependence on temperatures and loading paths
研究表明： 304不锈钢的高温非比例多轴应变循环变形行为具有明显的温度依赖性和路径依赖性。 |
| 5. | The power fluctuation and flow - induced vibration make the fuel assembly and other components deformed cyclically under the lwr operating condition , even failed in the severe cases
反应堆运行时，堆功率的波动和水冷却介质的流动使燃料组件及其它构件经受不同形式的循环变形，在极端情况下容易出现破损。 |
| 6. | In practical application , it is subjected to local plastic strain cycles due to the power fluctuations during reactor operation ; extremely , this power fluctuations could lead fatigue failure
在反应堆运行过程中，堆功率的波动和水冷却介质的流动会导致燃料元件包壳局部承受反复的循环变形，极端情况下会导致疲劳失效。 |
| 7. | In order to accurately describe the strain - controlled cyclic deformation of material at high temperatures , an experimental research was carried out on the cyclic deformation of 304 stainless steel subjected to uni - axial and non - proportionally multi - axial cyclic straining at 350 and 700
摘要为了对材料的高温应变循环变形行为进行精确的本构描述，在350和700下，对304不锈钢在不同加载路径下的单轴和非比例多轴应变循环变形行为进行了实验研究。 |
| 8. | For the cyclic deformation under a given strain at room temperature , cyclic softening is usually displayed till to failure in the lower range of strain ; however , cyclic hardening is displayed in the early stage in the higher range of strain , subsequent cyclic softening in the later stage and till to failure
对于室温下恒应变幅的循环变形，在应变幅较低时表现为循环软化直至疲劳破坏;在应变幅较高时，循环变形的初期为循环硬化，随后是循环软化直至疲劳破坏。 |
| 9. | So it is very important to understand the cyclic deformation behavior of zircaloy - 4 . in this paper , bauschinger effect of zircaloy - 4 with different metallurgical state at room temperature and 400 ? is investigated in an incremental step test and cyclic deformation test under constant strain control . bauschinger effect during cyclic deformation is described by using back stress , which is mainly responsible for bauschinger effect ; back stress is attained by using kwl " s method
本文采用单试样逐级加载循环变形和恒应变幅循环变形试验，研究了不同冶金状态、温度、氢以及固溶处理下的zr - 4合金的bauschinger效应现象；种种结果表明，影响bauschinger效应的主要因素是背应力；本文正是从背应力的角度来分析各种状态下zr - 4合金的bauschinger效应现象；背应力的计算主要通过使用kwl方法而获得。 |
| 10. | In this dissertation , the effect of texture , heat - treatment , and hydrogen on the lcf behavior of zircaloy - 4 and the cyclic deformation behavior for zircaloy - 4 , n18 alloy and n36 alloy have been investigated systematically using fully - reversed tension - compression loading under strain control ( r = min / max = - 1 ) , while the evolvement of the friction and back stresses versus the number of repeated working cycles and the plastic strain amplitude has been studied , and the thorough discussion combined with the analysis result of fatigue sub - structure , friction and back stresses , and fatigue fracture has been given to the mechanism underlying the lcf behavior of alloys
本文采用对称拉压循环变形方法( r _ = _ ( min ) _ ( max ) = - 1 ) ，系统研究了织构、热处理状态、氢对zr - 4合金低周疲劳性能的影响， zr - 4合金、 n18合金和n36合金的循环变形行为，并研究了摩擦应力、背应力随循环周次、塑性应变幅的变化规律。结合疲劳亚结构和疲劳断口的分析结果，深入探讨了影响合金低周疲劳行为的作用机制。 |
