Experimental and numerical investigations of dissipation mechanisms in particle dampers
Particle dampers are passive devices allowing strong dam** of structures vibrating in
harsh environment. We investigate the energy dissipation in a rigid enclosure attached to a …
harsh environment. We investigate the energy dissipation in a rigid enclosure attached to a …
Granular dampers: does particle shape matter?
By means of particle-based numerical simulations using the discrete element method, we
address the question of how the performance of granular dampers is affected by the shape …
address the question of how the performance of granular dampers is affected by the shape …
Granular dampers in microgravity: sharp transition between modes of operation
When a container filled with granular material is subjected to sinusoidal vibration in
microgravity, dependent on the amplitude of the oscillation, the granulate may exhibit one of …
microgravity, dependent on the amplitude of the oscillation, the granulate may exhibit one of …
[HTML][HTML] Influence of cavity partition on the dam** performance of additively manufactured particle dampers
Additively manufactured particle dampers (AMPDs) are innovative particle dampers created
by intentionally preserving unfused powder within a structure during laser powder bed …
by intentionally preserving unfused powder within a structure during laser powder bed …
Granular binary mixtures improve energy dissipation efficiency of granular dampers
Granular dampers are systems used to attenuate undesired vibrations produced by
mechanical devices. They consist of cavities filled by granular particles. In this work, we …
mechanical devices. They consist of cavities filled by granular particles. In this work, we …
Systematic design of particle dampers for transient vertical vibrations
A multilevel design toolchain is used for the development of particle dampers for vertical
transient vibrating structures. Thereby various experimental tests and numerical models are …
transient vibrating structures. Thereby various experimental tests and numerical models are …
Sound reduction at a target point inside an enclosed cavity using particle dampers
L Hu, Y Shi, Q Yang, G Song - Journal of Sound and Vibration, 2016 - Elsevier
The purpose of this paper is to develop a novel structural dam** approach to reduce the
sound pressure at a target point inside an enclosed cavity. In this approach, particle …
sound pressure at a target point inside an enclosed cavity. In this approach, particle …
Gravity governs shear localization in confined dense granular flows
The prediction of flow profiles of slowly sheared granular materials is a major geophysical
and industrial challenge. Understanding the role of gravity is particularly important for future …
and industrial challenge. Understanding the role of gravity is particularly important for future …
Granular Leidenfrost effect in microgravity
When a container filled with granular material is subjected to vertical vibration in the
presence of gravity, under certain conditions a non-monotonous density profile can be …
presence of gravity, under certain conditions a non-monotonous density profile can be …
Absence of subharmonic response in vibrated granular systems under microgravity conditions
By means of experiments in microgravity conditions, we show that granular systems
subjected to sinusoidal vibrations respond either by harmonic or gaslike dynamics …
subjected to sinusoidal vibrations respond either by harmonic or gaslike dynamics …