查询词典 shear stress

On the basis of the Leonov viscoelastic constitutive model, oscillatory shear flow of polymer melts in cavity during injection molding (including oscillation shear stress, melt temperature rise generated by oscillation, oscillation pressure gradient, solidified layer and oriented layer) has been researched for the first time.

本文采用了Leonov粘弹本构模型，首次研究了在注射成型中模腔内聚合熔体的振动剪切流动规律（包括振动剪切应力、振动产生的熔体温升、振动压力梯度、固化层和取向层），在研究模腔内振动剪切流动机理的同时，还在实验上研究了振动作用对制品结构和性能的影响。

In addition to this effect, lead lowers the shear stress in the primary shear zone, reducing cutting forces and power consumption.

此外，这种效果，降低应力在小学剪切带、降低切削力和功耗。

The shear stress and apparent viscosity of the masterbatch decreased with the increase of the shear rate and temperature.

随着剪切速率的增加，温度升高，剪切应力会降低，母粒的表观黏度也随之降低。

The calculating accuracy is ensured by expelling oddity points from the results. In part four, rotor life-loss caused by shear stress under torsional moment, turbo-generator rotors' combined vibration of bending and torsion are studied, and the maximum shear stresses of a stimulate rotor of N300MW steam turbine are calculated.

在第3章，重点研究了汽轮发电机组转子扭振机理和数学模型，特别是汽轮机特殊结构的模化方法，编写了计算程序，计算了某型300MW汽轮发电机组转子和试验台转子扭振特性。

Inviscid fluids are special in that they cannot support shear stress, meaning that the shear modulus is always zero.

有粘滞性流体比较特殊，其不服从剪切应力，即剪切模量总为零。

Maximum shear stress may be transfered into maximum shear strain by simple cyclic constitutive relation for low-cycle fatigue of controlling strain. Manson-Coffin type equation is derived by considering effect of nonproportional additional hardening.

对于应变控制的低周疲劳，最大剪应力参量通过简单的循环本构关系转换为最大剪应变参量，由此导出了Manson—Coffin型的公式，考虑了非比例循环附加强化对低周疲劳寿命的影响。

These indicated that endothelial cells of the mural coronary artery are free from atherosclerosis due to higher shear stress caused by myocardial bridge. The intima of the section proximal to mural coronary artery was likely to be sclerosed due to the lower and oscillatory shear force.

提示 壁冠状动脉内皮细胞受到心肌桥压迫导致血流切变力增高产生适应性反应，对内皮细胞有保护作用，而其近段内皮细胞由于切变力较低容易被损伤，成为动脉粥样硬化发生的基础。

Based upon the experimental results, including threshold values under static loading,the effects of alternating loading and room temperature creep,as well as metallographic observations of the fractography,it is concluded that notwithstanding stress corrosion or corrosion fatigue in aqua ammoniae,or fatigue in air,the cracks always initiate at the site subject to maximum normal stress(θ=-110°)along the notched surface,and then propagate along the maximum shear stress direction from that site(α=-35°).

由门槛值的测量、交变载荷的作用、室温蠕变的影响、断裂过程的金相观察及断口形貌等结果，可以确认；黄铜不论是在氨水中应力腐蚀或腐蚀疲劳，还是在空气中疲劳，裂纹都从Ⅱ型缺口试样的最大正应力处(0=-110°)萌生，并沿该处的最大剪应力方向(α=-35°)扩展。

The distributions of velocity, velocity gradient, shear stress, clongation stress, first normal stress difference and pressure of the flow of a power-law fluid in the profile die were analyzed. It indicates that for a power-law fluid only after a few iterations a good convergence can be reached, even though in the case of high extrusion velocity.

详细分析了聚合物口模挤出三维计算机模拟研究中的若干关键技术问题，如对异型材结构特点的分析、边界条件的确定、初始速度场的自动生成、罚数的求取、粘弹性流动模拟中的高We数问题、三维挤出胀大的自由界面更新等。

The distributions of velocity, velocity gradient, shear stress, clongation stress, first normal stress difference and pressure of the flow of a power-law fluid in the profile die were analyzed. It indicates that for a power-law fluid only after a few iterations a good convergence can be reached, even though in the case of high extrusion velocity.

本文分析了幂律流体在异型材挤出口模内的速度分布、速度梯度分布、剪切应力分布、拉伸应力分布、第一法向应力差分布和压力场，研究表明采用幂律流体模型，即使在挤出速度非常大的情况下，经过有限次迭代，模拟计算都能够收敛，并得到合理的结果。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。