Particle Damping for Launch Vibration Mitigation: Design and Test Validation

Pendleton, Scott C.; Basile, John; Guerra, J.E. Castillo; Tran, Bae; Ogomori, Howard; Lee, Sung

doi:10.2514/6.2008-2027

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…Despite the increasing uptake of particle damping technology [4,5,6], the modelling of a particle damper is still complicated by a number of issues. One of the principal challenges in using particle dampers is that they display dramatic amplitude non-linearity -a typical example is presented in Fig.…”

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confidence: 99%

Energy dissipation prediction of particle dampers

Wong

Daniel

Rongong

2009

Journal of Sound and Vibration

186

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This paper presents initial work on developing models for predicting particle dampers behaviour using the Discrete Element Method (DEM). In the DEM approach, individual particles are typically represented as elements with mass and rotational inertia. Contacts between particles and with walls are represented using springs, dampers and sliding friction interfaces. In order to use DEM to predict damper behaviour adequately, it is important to identify representative models of the contact conditions. It is particularly important to get the appropriate trade-off between accuracy and computational efficiency as particle dampers ave so many individual elements. In order to understand appropriate models, experimental work w s carri d out to understand interactions between the typically small (~ 1.5-3 mm diameter) particles used. Measurements were made of coefficient of restitution and interface friction. These were used to give an indication of the level of uncertainty that the simplest (linear) models might assume.These data were used to predict energy dissipation in a particle damper via a DEM simulation. The results were compared with that of an experiment. Keywords: particle damping, energy dissipationThis paper presents initial work on developing models for predicting particle dampers behaviour using the Discrete Element Method (DEM). In the DEM approach, individual particles are typically represented as elements with mass and rotational inertia. Contacts between particles and with walls are represented using springs, dampers and sliding friction interfaces. In order to use DEM to predict damper behaviour adequately, it is important to identify representative models of the contact conditions. It is particularly important to get the appropriate trade-off between accuracy and computational efficiency as particle dampers have so many individual elements. In order to understand appropriate models, experimental work was carried out to understand interactions between the typically small (~ 1.5-3 mm diameter) particles used. Measurements were made of coefficient of restitution and interface friction. These were used to give an indication of the level of uncertainty that the simplest (linear) models might assume. These data were used to predict energy dissipation in a particle damper via a DEM simulation. The results were compared with that of an experiment.

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mentioning

confidence: 99%

Energy dissipation prediction of particle dampers

Wong

Daniel

Rongong

2009

Journal of Sound and Vibration

186

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“…Saeki [17] studied the parameter influence law on the damping effect of M-PDs under horizontal harmonic excitation through a test and discrete element method; they pointed out that the damping effect of M-PD is significantly affected by the particle mass and size. Further, Pendleton [18] reported that the M-PD has a good damping effect over a wide frequency range (1-500 Hz). Wang [19] verified the damping effect of M-PDs at different frequencies (20-2000 Hz).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Model and Damping Effect of a Particle-Inertial Damper

Xie,

Xu,

Wang

et al. 2023

Buildings

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Particle dampers (PD) are safe, economical, and effective energy-dissipation devices for structures. However, the additional mass of PD must be sufficiently large to provide a better damping effect, and the initial movement condition of particles has a significant impact on the damping effect of PD. In this study, a particle-inertial damper (PID) is proposed to overcome these problems, and its mechanical model is established with and without considering particle collision. Subsequently, the influence of particle rolling friction and particle collision on the inertial amplification capacity as well as the dynamic response of a single degree of freedom (SDOF) structure with non-collision and collision PID (SDOF-PID) are systematically analysed. Finally, the control effects of a PID and a tuned mass damper (TMD) are compared based on two typical optimisation methods. The results indicate that particle rolling friction has little influence on the inertia amplification effect of a PID and the displacement response of a SDOF-PID. Under harmonic excitation, particle collision significantly affects the damping mechanism of a PID by its equivalent inertia coefficient, equivalent damping coefficient, and equivalent stiffness coefficient. The fixed-point theory and ‘performance-cost’ theory can be used to optimise the PID to a certain extent. The damping effect of a PID on the SDOF under the most severe seismic excitation is better than that of the PID under white noise excitation. With respect to the decreasing ratio of 40~50%, the additional mass of the PID is only one thousandth that of the TMD under the same damping capacity demand.

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“…The energy-dissipation mechanism is based on impact damping, where energy is lost due to the kinetic energy of the particles from collisions between them and the cavity walls. The damper has been proved to provide vibration attenuation during launch (Pendleton, et al, 2008). Conversely, the behavior of particles on orbit differs from that during launch because the particles float in the cavity under zero gravity on orbit.…”

Section: -1) Installation Of Damping Materialsmentioning

confidence: 99%

Microvibration in spacecraft

Komatsu

Uchida

2014

Mechanical Engineering Reviews

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The limitation of technology to estimate the on-orbit microvibration of a spacecraft is shown in this review paper. At present, the mechanical engineering ability cannot meet the mission requirements and the configuration of the pre-flight ground tests is far from the on-orbit configuration from the microvibration point of view. It is also extremely difficult to correlate the mathematical dynamical model (Finite Element Model (FEM)) exactly to test data up to the mid-frequency range where microvibration can be problematic even if considerable manpower is committed to analyze the correlation. Accordingly, a safety factor of at least single digit range must be introduced as part of disturbance control management.

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Particle Damping for Launch Vibration Mitigation: Design and Test Validation

Cited by 3 publications

References 3 publications

Energy dissipation prediction of particle dampers

Energy dissipation prediction of particle dampers

Mechanical Model and Damping Effect of a Particle-Inertial Damper

Microvibration in spacecraft

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