... on the contact load, and the contact stiffness will be an integral whose integrand is an implicit expression. The fractal dimension and the fractal roughness are obtained by the measurement of the surface profile to calculate the theoretical contact stiffness. The measurement of deformation is conducted...

... that are too stiff for the picoindenter transducer. To exemplify, we assume a representative shear modulus of 100 GPa for a metallic alloy to be tested and a sufficiently large contact radius, say 1 µ m to resolve under SEM. Those values yield tangential contact stiffnesses of about K t = 8 G...

... 2019 elastohydrodynamic lubrication contact stiffness lubricant properties steady-state response Lubrication is often employed in machinery as a means of separating contacting surfaces, using an intermediate medium, the lubricant. The main purpose is to prevent direct contact between...

... contact of rough surfaces based on ubiquitiform theory. The results show that the normal contact stiffness of a rough surface increases as the normal load rises. If the ubiquitiformal complexity of a rough surface increases or the lower bound to scale invariance of a rough surface decreases, the normal...

... 11 2013 18 02 2014 21 02 2014 We have used an ultrasonic method to determine the normal and shear stiffness for three different surfaces. The degree of hysteresis for the loading/unloading and stiffness ratio is a function of roughness. Nonlinear contact stiffness characteristics...

... the number of asperities on 2D surfaces. The contact stiffness on a unit length of a 1D outline and that on a unit area of 2D surfaces are presented based on a formula for determining the number of asperities. The relationship between macro parameters, such as contact stiffness and micro parameters...

... for this observation and the scatter that may occur for surfaces of nominally similar roughness. The suitability of these parameters for predicting the contact behavior of rough surfaces is also considered. contact mechanics surface roughness energy dissipation friction contact stiffness The importance...

... high pressure. Solid contact stiffness was predicted using a statistical rough surface contact model. Under all operating conditions, the prediction of fluid stiffness was found to be much greater than the solid contact stiffness. The total stiffness predicted by the model showed good agreement...

... models are typically used. A critical element of these models is the contact stiffness and damping arising from the interfacial interaction between the slider and the disk. In this paper, we review different models for predicting contact stiffness based on roughness and layered media and then we report...