Assessment of semi-active friction dampers

Santos, Marcelo Braga dos; Coelho, Humberto Tronconi; Neto, Francisco Paulo Lépore; Mafhoud, Jarir

doi:10.1016/j.ymssp.2017.02.034

Cited by 23 publications

(15 citation statements)

References 15 publications

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“…The response motion of interest is the location of the electric power plant, x 3 (t), and the frequency response function between external force F and response motion x 3 (t) can be derived in the s-domain as shown in Equation (2). M p ..…”

Section: Electric Power Plant With Proposed Passive Mount Modulementioning

confidence: 99%

“…Semi-active-type mounts inherit technical advantages from both active-type and passive-type mounts so that the performance of vibration isolation is superior compared to the passive-type mounts owing to the adaptive capability of the suspension coefficient in certain environmental conditions. The installation cost can be saved and the control risks from accidents caused by malfunctions can be eliminated in the case of the full-active-type mount device [1][2][3][4]. The active-type mount is the best vibration isolator device to apply control theory to achieve optimal performance in every operational condition or excitation situation [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Design Criterion of Damper Component of Passive-Type Mount Module without Using Base Mass-Block

Kim

2018

Energies

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Passive-type mount modules have been used frequently to isolate excitation from the target mechanical system, and electric power plants use the mount devices to control the harmonic excitation source from a combustion engine. The mount structure is composed of a spring component, a stacked thin-panel, and a heavy base-mass block, and installation as well as maintenance of the structures are difficult. To tackle this problem associated with mount modules, I investigate in this work the feasibility of a simplified mount module with no base mass-block; the harmonic frequency of interest was selected from 30 (Hz) to 120 (Hz) owing to the constant rotating speed of the combustion engine at 1800 (rev/min). The design criterion of the damper components was formulated from the response index at the electric power plant, and the influence of the damper component at the proposed mount was calculated theoretically from the linearized system models. The theoretical result was compared with the measured response index at the electric power plant, and the comparison result revealed the superior capability of the proposed mount module in controlling the reaction motion at the electric power plant.

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Section: Electric Power Plant With Proposed Passive Mount Modulementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design Criterion of Damper Component of Passive-Type Mount Module without Using Base Mass-Block

Kim

2018

Energies

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“…Te use of friction dampers has been widely proposed for a variety of mechanical systems for which applying viscoelastic materials, fuid-based dampers, or other viscous dampers is impossible. An important example is the application of friction dampers in aircraft engines to reduce the blades' vibration amplitudes [34]. Recurrent impact protection devices usually need to dissipate large amounts of energy to prevent damage to the infrastructure they protect.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model of Structural Damping in Friction Module of Shell Shock Absorber Connected to Spring

Shatskyi

Velychkovych

2023

Shock and Vibration

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Vibration processes play a significant role in the modern industry. In most cases, vibration reduces strength, reliability, and durability of industrial machines, mechanisms, and structures, as well as adversely affects the health of support staff. This study presents a new dry friction shell shock absorber design. The shock absorber contains two spring sections and a friction module with an open shell and an elastic filler; at the same time, the spring sections and the friction module work in parallel. The proposed device demonstrates good damping characteristics, capable of operating under high operating loads, and at the same time has compact transverse dimensions. With a nonmonotonic loading of such a shock absorber, due to the contact interaction of the filler with an open shell, part of the energy that is supplied to the system will be dissipated. In other words, in response to the action of an external nonmonotonic loading, the phenomenon of structural hysteresis occurs in the friction module of the shock absorber. To describe the deformation of the shock absorber, a mechanical and mathematical model of a shell with a cut along the generatrix, which is the main bearing link, has been developed. By means of the technique of quasistatic analysis of structural damping in nonmobile nonconservative shell systems with a deformable filler, the hysteresis loops of the presented shock absorber are analytically described. Using them, according to the known loading history, it is possible to predict the behavior of the considered nonconservative system at any time after the start of the loading process. At each stage of the cyclic loading, the distribution of stresses and relationships between the external loading and the piston displacement was studied. Inequalities are obtained for permissible loads under which the operation of the shock absorber is safe. Such shell shock absorbers are projected to be used in the mining, oil and gas, and construction industries.

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“…On–off semiactive strategies used for vibration control can be modeled by piecewise linear systems if the incorporated damping devices have linear characteristics within the time intervals between the switching moments. This type of behavior could be achieved using either viscous dampers with adjustable valves (Funde et al, 2019; Goncalves and Ahmadian, 2003; Liu et al, 2005; Shen et al, 2012; Verros et al, 2005) or dampers with controllable dry friction (Dos Santos et al, 2017; Lu et al, 2018; Sireteanu and Stammers, 2003; Stammers and Sireteanu, 1998; Stein et al, 2008). The variation of dissipative forces developed by the semiactive damping devices is adjusted according to the used strategy.…”

Section: Introductionmentioning

confidence: 99%

Application of a novel linearization method to compare the on–off control strategies modeled by piecewise linear systems

Sireteanu

Solomon

Mitu

et al. 2020

Journal of Vibration and Control

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In this study, a novel approach for linearization of piecewise linear systems is applied to approximate the root mean square output of a quarter car model with semiactive control. The on–off control strategies, balance logic, skyhook, groundhook, and hybrid are modeled by piecewise linear systems with variable friction. By the proposed method, one can attach, for each output of practical interest, a linear system with the same transmissibility factor. The obtained transmissibility factors are used to approximate the root mean square output of considered semiactive systems using the power spectral density input–output relationships for constant parameter linear systems with stationary random inputs. The method is applied for optimization of hybrid control strategy with respect to a performance index defined in terms of sprung mass acceleration, suspension travel, and dynamic contact force.

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Assessment of semi-active friction dampers

Cited by 23 publications

References 15 publications

Design Criterion of Damper Component of Passive-Type Mount Module without Using Base Mass-Block

Design Criterion of Damper Component of Passive-Type Mount Module without Using Base Mass-Block

Analytical Model of Structural Damping in Friction Module of Shell Shock Absorber Connected to Spring

Application of a novel linearization method to compare the on–off control strategies modeled by piecewise linear systems

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