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- flow stress ratio 流变应力比
- The pivotal factor of predicting rolling force is flow stress. 影响轧制力的主要因素是材料的流动应力。
- The flow stress remains a conant during steady state deformation. 稳态流变阶段,流变应力基本保持不变;
- The factors effecting Dfc,ie ,amount of load, stress ratio, loading frequency and welding are studied as well. 并对影响临界疲劳损伤因子D_(fe)的四个因素:载荷大小、应力比、加载顺序、焊接等进行了研究。
- There is much difference between the stress ratio in crown and springe calculated with these two methods. 拱冠和拱脚处的应力比值跟竖向构件比较相差悬殊;
- The flow stress of ferrite/pearlite steel under uni-axial tension was simulated with finite element method (FEM) by applying commercial software MARC/MENTAT. 应用MARC/MENTAT商用有限元软件,对铁素体/珠光体钢的单向拉伸过程进行了有限元模拟。
- The flow stress of 2519 aluminum alloy during high temperature deformation can be represented by Zener-Hollomon parameter including the Arrhenius term. 可用包含Arrhenius项的Zener2Hollomon参数描述2519铝合金高温塑性变形时的流变行为。
- For the case of fatigue loading:(1)For a given stress ratio,thespecimen seeks the SDS for the largest S_(max) to which it is subjected. 对疲劳载荷作用的情况:(1)对于给定的应力比 R,试样会趋于与它所承受的 S_(max)最大值相应的 SDS 状态。
- The flow stress of KFC copper alloy during high temperature can be represented by a Zener-Hollomon parameter in the hyperbolic-sine-type equation. 用Zener-Hol-lomon参数的双曲对数函数能较好的描述KFC铜合金高温变形时的流变应力行为;
- The amplitudes of pore pressure increased notably with the increase of cyclic stress ratio, and the residual pore pressure also increased obviously. 当循环应力比增大时,动孔隙水压力变化幅值显著增加,而残余孔压也较大。
- Experimental results showed that the DCPs could increase the elongation rate remarkably, whereas only decreased the flow stress slightly. 结果表明:脉冲电流能显著提高7475铝合金的伸长率,稍微降低其变形流动应力。
- A method of calculating the pile-soil stress ratio is conducted and the effect on main influence factors is analyzed systemically. 就粉喷桩加固路基的特点,根据力学原理,分析桩土应力比问题,获得一些有益的结论。
- The flow stress of 7A60 ultra high strength aluminum alloy was studied by isothermal compress test at constant strain rate. 采用等温恒应变速率压缩试验对7A60超高强度铝合金的流动应力进行了研究。
- For aluminum brass, both the stress ratio and the time-to-fracture ratio were closely related to the logarithmic concentration of F-ions. 而铝黄铜在其腐蚀电位的破裂形态是属于延性撕裂状的窝穴;
- 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;
- Aimed at the deficiency of tube hydro plasticity technology, effect of stress ratio on tension destabilization was analyzed by plasticity mechanic. 摘要针对目前管材内液塑性成形中缺陷对工艺的影响,借助塑性力学分析手段,对轴向和环向的应力比对拉伸失稳极限应变的影响进行了分析。
- In order to lower the flow stress in the cold heading process,the Bauschinger effect of microalloyed steel MFT8 for cold heading bolt was studied. 为了降低冷作强化非调质钢冷镦变形的变形抗力,研究了冷作强化非调质钢MFT8在冷变形过程中的鲍辛格效应。
- The efficiency and accuracy of the predicted flow stress achieved by the proposed model were better than the methods used in moat literature. 通过与其它文献中常用方法的比较发现,该方法在变形抗力预测的有效性和精确性方面都有很大提高。
- Three kinds of fatigue tests at certain stress ratio for unidirection T300/QY8911 Carbon/Bismalimide composite laminates were performed to obtain the S-N curves. 摘要测定了碳纤维/树脂基T300/QY8911复合材料的3组典型单轴循环应力下的S-N曲线。