Design of periodic arched structures integrating the structural nonlinearity and band gap effect for vibration isolation

On, Seung Yoon; Moon, Hyemi; Park, Seong Yeon; Ohm, Tae Woong; Kim, Wonvin; Hong, Helen; Kim, Seong Su

doi:10.1016/j.matdes.2022.111397

Cited by 5 publications

(4 citation statements)

References 62 publications

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“…These include rubber coil springs [43], hydraulic engine mounts [1], [2], laminated rubber-metal springs [124], silicone oil-filled rubber isolators for earthmoving machinery cab isolation [125], vibration isolation mounts with wide quasizero-stiffness range [123], [126] and other novel vibration isolators, e.g. [127]. These isolators are liable to present more advantageous nonlinear behaviour.…”

Section: Measurements For Nonlinear Dynamic Propertiesmentioning

confidence: 99%

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Sun,

Thompson

2023

Journal of Vibration and Acoustics

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Resilient elements are widely applied for vibration and noise control in many areas of engineering. Their complex dynamic stiffness gives fundamental information to describe their dynamic performance and is required for predicting structure-borne sound and vibration using dynamic modelling. Many laboratory measurement methods have been developed to determine the dynamic properties of resilient elements. This paper presents a review of recent developments of the measurement methods from the perspective of force-displacement relations of the resilient element assembly rather than of their material properties. To provide context, the review begins with an introduction to modelling methods for resilient elements, especially for rubber and rubber-like isolators, and three standardized measurement methods are introduced. Recent developments are then discussed including methods to extend the frequency range, which are mainly developments of the indirect method. Mobility methods, modal-based methods, recent active frequency-based substructuring (FBS) and inverse substructuring (IS) methods to study the dynamic properties of resilient elements are also described. Laboratory test rigs and the corresponding identification methods are outlined. Methods to evaluate nonlinear dynamic properties of resilient elements by laboratory measurements are also discussed. Finally, the review is concluded by discussing advantages and limitations of the existing methods and giving suggestions for future research.

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Section: Measurements For Nonlinear Dynamic Propertiesmentioning

confidence: 99%

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Sun,

Thompson

2023

Journal of Vibration and Acoustics

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“…Linear vibration isolators such as metal springs and antivibration rubbers are typically employed as vibration reduction mounts in various engineering applications. − However, they cannot effectively attenuate low-frequency vibrations. Therefore, the isolation of low-frequency vibrations remains a challenging issue to be resolved.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning-Driven Design Optimization of Buckling-Induced Quasi-Zero Stiffness Metastructures for Low-Frequency Vibration Isolation

Hong,

Kim,

Kim

et al. 2024

ACS Appl. Mater. Interfaces

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Metastructures, artificial arrangements of micro/ macrostructures, possess unique properties and are of significant interest in aerospace, stealth technology, and various other applications. Recent studies have focused on quasi-zero stiffness metastructures, providing an outstanding vibration isolation capability. However, existing methods are constrained to low preloads and lack the consideration of structural analysis, despite their intended use in practical structures. This study introduces metastructures with quasi-zero stiffness characteristics under high preloads by inducing local buckling. An optimization framework combining deep reinforcement learning and finite-element analysis is employed to derive an optimal model that considers both structural safety and quasi-zero stiffness characteristics. To validate the optimization results, quasi-zero stiffness metastructures are fabricated via 3D printing, and compression and vibration experiments are conducted. The fabricated metastructures exhibit quasizero stiffness characteristics under a high target preload along with outstanding vibration reduction performance, even in the lowfrequency range.

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“…Nevertheless, upon reaching a critical load, the arch experiences a disturbance in its equilibrium state, leading to the emergence of nonlinear elastic force akin to those encountered in pre-buckled Euler beams. [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

Feng,

Guo,

Feng

et al. 2023

Preprint

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This paper proposes a dual-arched nonlinear anti-vibration structure (D-ANAVS) and systematically investigates its nonlinear characteristics to assess its vibration suppression performance. The D-ANAVS consists of a dual arrangement of arch-shaped arcs, which demonstrates a distinctive characteristic characterized by the combination of linear and geometric nonlinear stiffness during the compression. This distinctive attribute distinguishes the D-ANAVS from other structures, endowing it with an extended quasi-zero stiffness range in displacement and greatly enhancing its performance in effectively suppressing vibrations. A lumped parameter model of the D-ANAVS is introduced to comprehensively analyze its static and dynamic behaviors. The investigation specifically focuses on examining the influence of various structural parameters on the observed nonlinearities. A prototype is meticulously designed and fabricated using thermoplastic polyurethane (TPU) material. Experimental tests are conducted to assess its efficacy in suppressing vibrations. The obtained results unequivocally demonstrate the remarkable capability of the D-ANAVS to significantly attenuate vibrations within the low-frequency range. The results obtained from this study offer compelling empirical evidence that substantiates the effectiveness of the D-ANAVS as a robust vibration suppression solution applicable to a wide range of engineering applications.

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Design of periodic arched structures integrating the structural nonlinearity and band gap effect for vibration isolation

Cited by 5 publications

References 62 publications

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Machine Learning-Driven Design Optimization of Buckling-Induced Quasi-Zero Stiffness Metastructures for Low-Frequency Vibration Isolation

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

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