Abstract This paper investigates the steady-state response of a harmonically excited multi-degree-of-freedom (MDOF) system with Coulomb contact between: (1) mass and fixed wall; (2) two different masses; (3) an oscillating base. Although discrete MDOF models are commonly used at early design stages to analyse dynamic performances engineering structures, current understanding friction damping ef...

A new systematic iterative analytical procedure is presented to predict the dynamic response of composite sandwich plates subjected to low-velocity impact phenomenon with/without initial in-plane forces. In this method, the interaction between indenter and sandwich panel is modeled with considering the exponential equation similar to the Hertzian contact law and using the principle of minimum p...

The water tank is a typical nonlinear system representing several types of systems like barrels, reservoirs, tanks etc. for liquid. The simulation, similarly as in other cases, can help with the understanding of the system’s static and dynamic behavior and it is starting point for the controller design. The adaptive control in this work is based on the choice of the external linear model of the...

Abstract This paper proposes an approach for the determination of analytical boundaries continuous, stick-slip and no motion regimes steady-state response a multi-degree-of-freedom (MDOF) system with single Coulomb contact to harmonic excitation. While these have been previously investigated single-degree-of-freedom (SDOF) systems, they are mostly unexplored MDOF systems. Closed-form expression...

The paper presents a multifunctional joint sensor with measurement adaptability for biological engineering applications, such as gait analysis, gesture recognition, etc. The adaptability is embodied in both static and dynamic environment measurements, both of body pose and in motion capture. Its multifunctional capabilities lay in its ability of simultaneous measurement of multiple degrees of f...

An increasing number of MEMS devices use parametric excitation (PE) to outperform conventional designs. These systems are operated at parametric resonance. Different to standard cases of resonance, at parametric resonances the vibration’s amplitudes increase faster and within a smaller interval. The amplification is much larger and only limited by non-linearities. So far the focus has mostly be...

This paper investigated the organization of the postural control system in human upright stance. To this aim the shared variance between joint and 3D total body center of mass (COM) motions was analyzed using multivariate canonical correlation analysis (CCA). The CCA was performed as a function of established models of postural control that varied in their joint degrees of freedom (DOF), namely...