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Mathematical modeling of a transient vibration control strategy using a switchable mass stiffness compound system

Mathematical modeling of a transient vibration control strategy using a switchable mass stiffness compound system
Mathematical modeling of a transient vibration control strategy using a switchable mass stiffness compound system
A theoretical control strategy for residual vibration control resulting from a shock pulse is studied. The semiactive control strategy is applied in a piecewise linear compound model and involves an on-off logic to connect and disconnect a secondary mass stiffness system from the primary isolation device, with the aim of providing high energy dissipation for lightly damped systems. The compound model is characterized by an energy dissipation mechanism due to the inelastic collision between the two masses and then viscous damping is introduced and its effects are analyzed. The objective of the simulations is to evaluate the transient vibration response in comparison to the results for a passive viscously damped single degree-of-freedom system considered as the benchmark or reference case. Similarly the decay in the compound system is associated with an equivalent decay rate or logarithmic decrement for direct comparison. It is found how the compound system provides improved isolation compared to the passive system, and the damping mechanisms are explained
1070-9622
565181-[10pp]
Ledezma Ramirez, Diego Francisco
0a848233-63f3-46d1-a781-aad00f4fb097
Ferguson, Neil
8cb67e30-48e2-491c-9390-d444fa786ac8
Zamarripa, Adriana Salas
e372a94e-858f-4beb-8755-8a1e2b3f4a31
Ledezma Ramirez, Diego Francisco
0a848233-63f3-46d1-a781-aad00f4fb097
Ferguson, Neil
8cb67e30-48e2-491c-9390-d444fa786ac8
Zamarripa, Adriana Salas
e372a94e-858f-4beb-8755-8a1e2b3f4a31

Ledezma Ramirez, Diego Francisco, Ferguson, Neil and Zamarripa, Adriana Salas (2014) Mathematical modeling of a transient vibration control strategy using a switchable mass stiffness compound system. Shock and Vibration, 2014, 565181-[10pp]. (doi:10.1155/2014/565181).

Record type: Article

Abstract

A theoretical control strategy for residual vibration control resulting from a shock pulse is studied. The semiactive control strategy is applied in a piecewise linear compound model and involves an on-off logic to connect and disconnect a secondary mass stiffness system from the primary isolation device, with the aim of providing high energy dissipation for lightly damped systems. The compound model is characterized by an energy dissipation mechanism due to the inelastic collision between the two masses and then viscous damping is introduced and its effects are analyzed. The objective of the simulations is to evaluate the transient vibration response in comparison to the results for a passive viscously damped single degree-of-freedom system considered as the benchmark or reference case. Similarly the decay in the compound system is associated with an equivalent decay rate or logarithmic decrement for direct comparison. It is found how the compound system provides improved isolation compared to the passive system, and the damping mechanisms are explained

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Published date: 2014
Organisations: Dynamics Group

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Local EPrints ID: 363789
URI: https://eprints.soton.ac.uk/id/eprint/363789
ISSN: 1070-9622
PURE UUID: ec4400b0-6925-4b6e-9ce5-98f88a6f3b7b
ORCID for Neil Ferguson: ORCID iD orcid.org/0000-0001-5955-7477

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Date deposited: 04 Apr 2014 08:08
Last modified: 20 Jul 2019 01:29

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Contributors

Author: Diego Francisco Ledezma Ramirez
Author: Neil Ferguson ORCID iD
Author: Adriana Salas Zamarripa

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