This article intends a hybrid energy-harvesting shock absorber design which comprehends energy harvesting of automobile suspension vibration dissipation. A mathematical model the prototype is established, and simulation results show that dissipation can be recovered by varying feed module, thereby got damping forces (DF) ratio at different compression extension stroke. The conversion from hydra...

In high production gas wells, premium connections are subject to alternating loads and vibration excitation due the change of fluid pressure exerted on tubing string. The energy dissipation sealing surface affects performance connections. present study proposes a new analysis method for using microslip shear layer mode, novel technique overcome improve limitations existing this paper, based mod...

Afterbody—the portion of the body downstream shear layer separation points—was believed to be essential for vortex-induced vibration (VIV) a bluff body. A recent study by Zhao et al. [“Flow-induced D-section cylinders: An afterbody is not vibration,” J. Fluid Mech. 851, 317–343 (2018)] made an important forward demonstrate “an required VIV” through water tunnel experiments reversed prism. Howev...

vibration generated by vehicles during road transport has an important impact on agricultural products' damage process, particularly in the case of fruits and vegetables. modulus of elasticity is one of the most conspicuous mechanical properties of fruits, the variation in which can be described as one of the most affecting damage criteria during transportation. this research was conducted...

We investigate the multiphoton resonance and multi-ion excitation in a single-mode cavity with identical vibrating ionqubits, which enables tripartite interaction among internal states of ions, mode ions' vibrational motion. Under particular resonant conditions, we derive effective Hamiltonians for three-photon three-excitation cases, respectively, find that magnitude coupling energy can be tun...

We provide a direct experimental test of the fluctuation-dissipation theorem (FDT) in an aging colloidal glass. The use of combined active and passive microrheology allows us to independently measure both the correlation and response functions in this nonequilibrium situation. Contrary to previous reports, we find no deviations from the FDT over several decades in frequency (1 Hz-10 kHz) and fo...

The use of cylindrical rotor in synchronous machines offers excellent conditions for the heat dissipation from the stator and rotor windings. This paper describes the main ventilation arrangements for this type of construction as well as specifies the main factors that determine the choice of the most appropriate ventilation method for each application.

Abstract Vibration energy harvesting is an emerging technology that enables electric power generation using piezoelectric devices. The prevailing approach for characterization of the energy-harvesting capacity in these devices to consider a finite structure operating under forced vibration conditions. Here, we present alternative framework whereby intrinsic characteristics are formally quantifi...

The nonlinear energy sink (NES) is defined as a single-degree-of-freedom structural element with relatively small mass and weak dissipation, attached to primary structure via essentially coupling. It passive dissipation device designed rapidly absorb vibration (due shock, blast, earthquakes, etc.) from locally dissipate it. article contains mini-review of the works on NESs. Design schemes for s...

In order to reduce the impact of noise on environment and dissipation useless energy traction motors, this study analyzed a motor by detecting vibration acceleration suspension frame. Field tests were conducted measure frame in commercially operational medium- low-speed maglev train. The showed that as train accelerates, sound pressure grows overall, but increase becomes smaller at each test sp...