In the hot compression test friction has a detrimental influence on the flow stress through the process and therefore, correcting the deformation curve for real behavior is very important for both researchers and engineers. In this study, a series of compression tests were simulated using Abaqus software. In this study, it has been employed the Taguchi method to design experiments by the factor...

In this paper, validation of a model for the speed dependency of friction is presented. Based on the shape of the friction – speed curve, the model assumes that calculation of friction at any speed would need an estimate of friction at very low speed, and the knowledge of its variation with speed described by the Stribeck curve. Two existing models developed at LCPC are then coupled to predict ...

This work focuses on friction and table mass identification using signal processing techniques. This report describes the system, data collection process and analysis of the data. Keywords—Friction Curve Identification, Table Mass Identification, Least Squares, Sampling Frequency, Butterworth Filter

(2) More seriously, the friction force depends on how you control the temperature in the simulation. Temperature is typically controlled in these simulations using a thermostat attached to the bottom of the system. As the green curve shows, by varying the thermostat parameter, one can basically get the friction to become arbitrarily small, even though the temperature of the heat bath is the sam...

We present a parameter estimation approach for LuGre friction model based on chain-code method. The approach employs shape characteristics of friction force-displacement curve to measure the similar degree, here it is Euclidean distance, between the original curve and simulated curve. Once the Euclidean distance is smaller than the given error, we can consider the final dynamic parameters are t...

The discovery that a substantial fraction of Kuiper Belt objects (KBOs) exists in binaries with wide separations and roughly equal masses, has motivated a variety of new theories explaining their formation. Goldreich et al. (2002) proposed two formation scenarios: In the first, a transient binary is formed, which becomes bound with the aid of dynamical friction from the sea of small bodies (Ls ...