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- dynamic strain rate 动应变速率
- Strain rate and stress are nonlinearly related. 应变速率和应力呈非线性关系。
- And the effects of deformation temperature and strain rate on the process of dynamic transformation and spheroidization of pearlite were different. 为了获得亚微米级别铁素体和颗粒状渗碳体弥散分布的复相组织需要形变温度与形变速率的配合。
- At the slow strain rate tension(SSRT) condition, dynamic electrochemical charging with hydrogen decreases the plasticity of X70 pipeline steel considerably. 在慢拉伸条件下,动态电化学充氢显著降低材料的塑性。
- Moreover, the high temperature plasticity increasewith the strain rate. 此外该合金的高温塑性亦随应变速率的增大而增加。
- A dynamic strain gage is developed for dynamic stress test at900℃ of turbine rotor blades of an aeroengine. 为了对某型航空发动机涡轮转子叶片在900℃温下进行动应力测试,研制了900℃态应变计。
- The effect of the mesh density, the change of dynamic plasticity property of mild steel with strain rate and the spotweld mechanical property on the simulation results is analyzed. 分析了网格密度、身用低碳钢材料塑性特性随应变率的变化及焊点力学特性因素对仿真结果的影响。
- The dynamic split tests of marble using both Brazilian disc and flattened Brazilian disc were performed at high strain rate with split Hopkins pressure bar(SHPB) of 100mm diameter. 利用直径100mm的分离式Hopkinson杆对大理岩巴西圆盘和平台巴西圆盘试样进行了动态劈裂实验。
- On the assumption that the micro fracture toughness of concrete does not vary with strain rate, the static and dynamic strength of concrete under different confinements can be calculated. 在假定混凝土的断裂韧度不随加载速率变化的前提下,分析和计算了不同围压荷载下的混凝土静动力强度,并与试验结果进行比较。
- The serration flow phenomenon is associated with dynamic strain aging (DSA) and yield a negative strain-rate dependence of the flow stress. 结果表明: 易拉罐用铝材在形变过程中会出现动态应变时效现象;
- A method is introduced to calculate the dynamic strain of themooring anchor chain in collision and some related problems arediscussed. 介绍系泊浮体受外碰撞时锚链动态张力计算方法,并对动态张力的若干问题进行了讨论.
- With the increase of initial deviator stress, the dynamic elastic modulus increases greatly under the same level of dynamic strain. 在相同的动应变水平下,随着初始偏移应力的增加,土体动弹性模量有较大幅度的增加;
- Strain rate was significantly correlated with Ep, Es, stiffness and distensibility. SR与Ep、Es、僵硬度、膨胀性均有明显的相关性。
- The factors which may give influence on negative strain rate effect,are especially discussed incl... 随着应变率的进一步提高,两者又都存在一定程度的应变率弱化倾向。
- Dynamic Strain Aging (DSA) is a strengthening phenomenon in metals and alloys caused by the interaction between the diffusive solute atoms and the moving dislocation. 动态应变时效是在金属和合金中,移动着的溶质原子和运动中的位错发生交互作用时所出现的一种强化现象。
- Based on thesereasons, both overshoot and undershoot do not appear in the case of high strain rate. 基于这些原因,都超下冲不显示的情况下高应变率。
- Dynamic strain of flexible beam was measured by pasted FBG strain sensor, and the results were compared with that by acceleration sensor of piezoelectric ceramic. 摘要研究了粘贴式光纤布拉格光栅应变传感器对柔性梁的动态响应特性,并用压电陶瓷加速度传感器作对照。
- However, higher strain rate tests were performed using a Split Hopkinson Pressure Bar (SHPB). 而在高应变率下,实验则将利用分离式霍普金森杆 (SHPB)来测试。
- The silt distributing abroad in Hangzhou bay was chosen as research object to evaluate the effect of vibration frequency on dynamic strain and dynamic strength of silt. 试验选用杭州湾地区分布较广的粉土,研究了振动频率的变化对粉土动应变和动强度的影响。
- Results: Although strain and strain rate declined from basal segment to apex, there was no statistical difference. 结果:基底段到心尖段应变与应变率呈下降趋势,但统计学差异无显著性。