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- During the isothermal constant strain rate compression process, the effect of deformation heating on flow stress increases with increasing equivalent strain rate. 在等温恒应变速率压缩过程中,随着等效应变速率的增大,变形热效应对流动应力的影响程度增大。
- When the equivalent strain rate is relatively low, this influence can be neglected and the compression process can be considered as an isothermal process. 当等效应变速率很小时,变形热效应对流动应力的影响可忽略不计,压缩过程可近似认为是等温过程;
- When the equivalent strain rate is relatively low, this influence can be neglected and the compression process can be considered as an isothermal process. 当等效应变速率很小时,变形热效应对流动应力的影响可忽略不计,压缩过程可近似认为是等温过程;
- While the equivalent strain rate is high, this influence is of importance and the compression process can be approximately considered as an adiabatic process. 当等效应变速率较大时,变形热效应对流动应力的影响相当显著,压缩过程基本上成为绝热过程。
- equivalent strain rate 等效应变速率
- Strain rate and stress are nonlinearly related. 应变速率和应力呈非线性关系。
- 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。
- Abstract: In this paper,the characteristics of large plane-pure-shear deformation is analyzed.Based on the principle of strain accumulation,the equivalent strain formulae of large plane-pure-shear deformation is derived. 文摘:本文分析了平面纯剪切大变形的变形特征,基于应变累积的观点,推导出等效应变值的计算公式。
- In this paper, the characteristics of large plane-pure-shear deformation is analyzed. Based on the principle of strain accumulation, the equivalent strain formulae of large plane-pure-shear deformation is derived. 摘要本文分析了平面纯剪切大变形的变形特徽,基于应变累积的观点,推导出等效应变值的计算公式。
- 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 mechanical effects that hole-rate acts on hole medium are considered under the effect of impactive static water by the equivalent strain,and the evolutive equation of hole-rate is given. 利用等效应变法考虑了孔隙率对孔隙介质在冲击静水作用下的力学行为的影响,并得到了孔隙率演化方程。
- 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。
- The grid distortion, metal velocity field, plastic equivalent stress field and plastic equivalent strain field during the non-symmetric profile extrusion in the two-hole die have been obtained. 模拟了双孔模非对称角铝型材挤压变形过程,获得了挤压变形时网格畸变、流速、应力和应变分布,展示了型材挤压件变形不均匀细节。
- 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。
- 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。
- 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。
- On the other hand, in the case of high strain rate, both overshoot and undershoot do not appear. 另一方面,在高应变率,都超下冲不会出现。
- A piezoelectric SSA is implemented based on a strain rate bridge circuit and exhibits excellent performance in suppressing the vibration of a cantilever. 基于应变速度电桥电路制成了压电陶瓷自感知执行器,实验表明能有效抑制悬臂梁的振动。
- The mean peak velocity(EVe, EVa) and ratio(EVe/EVa), the mean peak strain rate(Ee, Ea) and ratio(Ee/Ea) were calculated. 计算前后瓣环的平均峰值速度(EVe、EVa)及比率(EVeEVa); 平均峰值应变率(Ee、Ea)及比率(EeEa)。
- four-parameter equivalent strain 四参数等效应变