Theoretical Design of a Novel Vibration Energy Absorbing Mechanism for Cables

Abstract

A novel design of a vibration energy absorbing mechanism (VEAM) that is based on multi-physics (magnetic spring, hydraulic system, structural dynamics, etc.) for cable vibration is proposed. The minimum working force of the hydraulic cylinder has been exploited in this design in order to combine a non-linear stiffness vibration isolation module that is composed of permanent magnetic springs with hydraulic viscous vibration damping modules. In response to different environmental vibration impacts, VEAM can automatically switch the vibration control modes without an electronic mechanism. Additionally, the non-contact design effectively reduces the wear that is induced by the reciprocating motion of the small amplitude of the hydraulic viscous dampers. The proposed mechanism is explained and a theoretical model is established. The transmissibility of the two modules at a single degree of freedom is derived using the harmonic balance method. After that, a series of variable control numerical simulations were performed for each important parameter. Empirical rules for designing the system were created by comparing the influence of each parameter on the vibration isolation performance of the entire system.

Mechanism Design and Experimental Verification of Novel Automatic Balance Equipment for a Rope-Type Elevator

“…Kinematic simulation is often used to verify the performance of a new mechanism [26]. In this study, the mechanism modeling and kinematic verification based on numerical simulation technology are carried out to confirm the rationality and effectiveness of the proposed NABE-RE design.…”

Advances in Mechanical Systems Dynamics 2020

“…The advantages of coupled simulations are highlighted. Finally, in [5] a novel vibration energy absorbing mechanism for cables is presented. Since it includes non-linear magnetic springs and hydraulic dampers, a coupled model is developed.…”

“…In [5], non-linear stiffness properties are exploited to dampen cable vibrations. Finally, in [8], non-linear effects are estimated to find chain transmission efficiency.…”

“…An interesting comparison between results obtained with un-coupled and coupled models is made. Finally, in [5], a novel vibration absorbing mechanism for cables is presented. It exploits multi-physical components (magnetic springs and hydraulic cylinders).…”

Empirical research on the friction behavior of O-rings in hydraulic cylinders

“…On the other hand, Qin et al proposed a novel design of a vibration energy absorbing mechanism. They proposed that the friction force occurring at the piston sealing unit in the hydraulic cylinder can be limited to a certain range by controlling the machining accuracy of metal components, so as to realize the automatic adjustment between their two vibration energy absorbing modules [ 24 ]. In order to make reasonable use of this friction force, a test bench for observing the sliding friction characteristics in the hydraulic cylinder system was built in this study, and the prototype tested was manufactured using five-axis precision machining and measurement.…”