Impact shear. The maximum shear stress created in a solid round bar subject to impact is given as the equation:"Jourawski formula" 2 (U G / V )(1/2) where U = change in kinetic energy; G = shear modulus; V = volume of rod;and...
(4.4.47) and rearranging, we get the dimensionless shear-stress distribution (4.4.50)ττw=1+(2q)[gvw+dδdx(∫ 0ηg2dη-g∫ 0ηgdη)]. Equation (4.4.50) also applies to incompressible boundary layers with pressure gradient, provided that the term - (δ/ue)(due/dx) is ...
The fourth feature is that under the shear stress condition, the rougher the interface is, the smaller the shear displacement is. Besides, the load-unloading shear creep tests suggest that: (a) shear creep displacement typically contains both viscoelastic and viscoplastic deformation; and (b) the...
The wall shear stress was calculated with the following equation: where τ–wall shear stress; Q–flow rate; μ–viscosity (0.01 g cms−1); h–height of channel; and w–width of channel. For static cell culture, the inlet and outlet of the channels were sealed with tape after ...
The interfacial shear strength is associated with the fiber bond strength and represents the stress required to overcome the chemical bonding between the fiber and the fiber coating (or the static coefficient of friction in the absence of chemical bonding). ...
In the isotropic phase, the calculated viscosities at low volume fractions are in agreement with predictions by Dhont and Briels, while over a larger range of shear rates they are described by the Hess equation. The self-rotational diffusion coefficients obtained from the flow curves agree very ...
We notice that the term (\(1-{e}^{-b\alpha }\)) is a normalised term to simulate the evolution of plastic hardening variables with hardening parameters. Hence, the parameter\(Q\)in Eq. (5) must have a unit of stress (Pa), to honour the definition of the plastic hardening variable...
In order to investigate this flow, sets of parameters have been explored to analyse the significant differences introduced with the proposed models, while the momentum-continuity-stress equations are solved through a hybrid finite-element/finite volume numerical scheme. Solutions are discussed for first...
2 and substituted in equation (3) to obtain shear stress. Using these data, we have developed a disturbed flow model as shown in Fig. 2A–E. The steps involved in fabrication of the apparatus were shown in Supplementary Fig. 3A–L. Figure 1 Results of CFD analysis. (A) Color contours...
The fitted parameters are μ0= 1.71 mPa∙s, α0= 11.73 GPa−1, and q= 2.807, and the average absolute relative deviation is 2%. Both provide a more accurate fit than the usual Roelands equation for which α0=9.52GPa−1 and the average absolute relative deviation is 6%. For...