Quasi-static cyclic behavior of wire rope isolators: comprehensive experimental study and improved mathematical modeling

Leblouba, Moussa; Balaji, P. S.; Muhammad, E.R.

doi:10.1016/j.heliyon.2022.e10944

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…The displacement-controlled load was applied only up to 2 mm displacement. The work of Moussa et al [25] showed that the WRI exhibits independent rate behavior, for which they studied the effect of displacement rates from 2 mm/min to 128 mm/min. Hence, in this work, the lower displacement rate was chosen for the study.…”

Section: Vertical and Lateral Static Stiffness Of Conventional Wrismentioning

confidence: 99%

Wire Rope Isolators for the Vibration Protection of Heavy Equipment: Exploratory Research

2022

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Wire rope isolators (WRI) are devices that dissipate vibrational energy. They are used in various industrial applications to protect equipment and machinery. Heavy machinery and limited space are still some of the constraints engineers face when designing the WRI system. Heavy equipment requires increased vertical stiffness; however, using larger WRIs decreases their lateral flexibility, which is the target property in the first place. Using several small-sized WRIs is not possible in the case of limited space. Therefore, the present study proposes two improvements to WRIs to overcome the challenges caused by heavy-weight equipment and a lack of the space required to insert the appropriate number and size of WRIs. Two new configurations for WRIs are proposed, Spring-WRI (S-WRI) and Double-WRI (D-WRI), to improve the stiffness and damping properties in order to expand their applications. Monotonic and quasi-static cyclic loading tests were performed on the conventional and proposed WRI variants. Exploratory tests showed that the WRI’s stiffness greatly depends on the wire rope diameter. Adding springs inside a conventional WRI (S-WRI) can improve vertical stiffness while maintaining the required lateral flexibility. The D-WRI was found to preserve the necessary flexibility and to be capable of solving the problem of limited space. The hysteresis behavior of the D-WRI can be expressed as the sum of the hysteresis of each WRI. The proposed configurations effectively improve the stiffness and damping properties of WRIs and expand their applicability for the vibration isolation of heavy equipment and in limited space.

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Section: Vertical and Lateral Static Stiffness Of Conventional Wrismentioning

confidence: 99%

Wire Rope Isolators for the Vibration Protection of Heavy Equipment: Exploratory Research

2022

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Non-linear Wire Rope Isolator Model to Enhance Transportation Simulation of Fragile Equipment

Barnaba

Neri

Bucchi

et al. 2023

J. Vib. Eng. Technol.

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Introduction Wire rope isolators are often used as means of vibration isolation for the transportation of fragile machine equipment. When deployed as suspension systems in a transportation scenario, a simple spring–damper model is often used to predict the dynamic loads that act on the structure being transported. However, this simple model has proved to be too simplistic to be used in the development of an accurate numerical model that can predict the vibration levels experienced by the inner components of fragile equipment during its transportation. This paper describes the experimental tests conducted on a wire rope isolator used for the transportation of the prototype SSR1 cryomodule. Materials and methods A hysteretic Bouc–Wen model has been used to analytically describe the force–deformation relationship of the wire rope isolators. The developed model of the isolator has been implemented in a larger model to simulate the actual transportation of the prototype SSR1 cryomodule, a section of the new PIP-II linear accelerator under construction at Fermilab. A series of multibody dynamic simulations with rigid and flexible components was used to numerically determine the acceleration of some critical components. Results and conclusions An actual experimental transportation was simulated using two numerical models: the developed Bouc–Wen model and a conventional spring–damper model. It is shown how the Bouc–Wen formulation of the isolator characteristics drastically improves the correspondence between experimental and simulated results if compared to a spring–damper model, especially in the range of 0–30 Hz which is the most critical for transportation problems.

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Nonlinear analysis of vibration attenuation of ring-spring-resonator based meta-isolation system

Shi

Chen

et al. 2023

Engineering Structures

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Quasi-static cyclic behavior of wire rope isolators: comprehensive experimental study and improved mathematical modeling

Cited by 4 publications

References 23 publications

Wire Rope Isolators for the Vibration Protection of Heavy Equipment: Exploratory Research

Wire Rope Isolators for the Vibration Protection of Heavy Equipment: Exploratory Research

Non-linear Wire Rope Isolator Model to Enhance Transportation Simulation of Fragile Equipment

Nonlinear analysis of vibration attenuation of ring-spring-resonator based meta-isolation system

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