1) threshold shear stress
起动切应力
1.
Discussion on stage threshold shear stress of non-uniform sediment;
非均匀沙分级起动切应力探讨
2) surface shear stress fluctuation
剪切应力起伏
1.
We eliminated the singularity by substituting a finite plate for Chase′s infinite plate and by considering the surface shear stress fluctuations beneath the boundarylayer neglected by Chase, and analyzed the characteristics of wavenumberfrequency spectrum of the turbulent wall pressure at s.
基于Chase的理论,对考虑了平板尺度及湍流壁面剪切应力起伏的平板湍流边界层壁压起伏的波数—频率谱进行了分析。
3) eddy shearing stress
涡动切应力
4) the critical shear stress
临界起动剪切力
5) arterial wall shear stress(WSS)
动脉壁切应力
6) shear flow stress
剪切流动应力
1.
In this paper,it is validated by comparing simulation and experiments results that good precision of simulation could be obtained with this friction model,and the effect of cooling fluid on the cutting could be well simulated by reducing the shear flow stress of workpi.
刀-屑摩擦模型是金属切削仿真的关键问题,采用基于前刀面正应力的摩擦系数模型能够真实反映刀-屑接触长度内的摩擦状况,通过仿真和试验证明,采用该模型可获得较好的仿真精度,而且通过降低工件材料的剪切流动应力能够较好地模拟切削液的润滑效果对切削过程的影响。
补充资料:等效切应力
等效切应力
equivalent shear stress
dengxlaoq一eyingll等效切应力(equivalent Shear stress)一般应力状态下的各应力分量经适当组合而形成的与纯剪切应力等效的应力,也称统一切应力,切应力强度。其表达式为一六寸(一,2+(一,2+(一)2 等效切应力与偏应力张量二次不变量(见应力张量)的关系为二一了,万,与八面体切应力二(见八面体应力)仅差一常系数,与坐标轴变换无关。 (王占学)
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