The objective of this study is to develop a portable device for quantifying the velocity-dependent properties of spastic elbow muscles. Based on a motor-driven system, validation tests of the portable system such as accuracy and response of sensors were first examined. Furthermore, simulated modules (inertia, damper and spring) as well as elbow joints (15 control and 15 hemiplegic subjects) wer...

In this paper, the mechanical model of grotto–eave system with cable inerter viscous damper (CIVD) is established, and vibration control equations are established. Firstly, stochastic response carried out, optimization design parameters CIVD out for systems different connection types. Finally, mitigation performance under seismic inputs analyzed. The research shows that in optimal CIVD, inerter...

The visco-damper is a crucial engine accessory from an operation- as well vehicle-safety point of view. service life this damping product determined by the degradation silicone oil applied to it. thermal and mechanical starts not at first operation damper, but manufacturing stage when filled into damper’s gap high pressure. Finite volume method-based computational fluid dynamic calculations pro...

Mathematical modeling and experimental research represented in this paper is aimed at dynamic force analysis of circuit cards order to eliminate or reduce stress deflection an acceptable level provide strength reliability design card assemblies subjected vibration. In conditions when viscous friction forces are negligible dampers, such as liquid cannot be used reduction oscillation amplitude cr...

This study introduces an online reconfigurable road-adaptive semi-active suspension controller that reaches the performance objectives with satisfying dissipativity constraint. The concept of model is based on a nonlinear static Magnetorheological (MR) damper considering bi-viscous and hysteretic behaviors damper. input saturation problem has been solved by using proposed method in literature a...

Abstract Quasi-zero-stiffness (QZS) vibration isolators have been widely studied, because they show excellent high static and low dynamic stiffnesses can effectively solve low-frequency ultralow-frequency vibration. However, traditional QZS (T-QZS) usually adopt linear damping, owing to which achieving good isolation performance at both frequencies is difficult. T-QZS exhibit hardening stiffnes...