Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper
Shear Thickening Fluid (STF) is a specialized high-concentration particle suspension capable of rapidly and reversibly altering its viscosity when exposed to sudden impacts. Consequently, STF-based dampers deliver a self-adaptive damping force and demonstrate significant potential for applications i...
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MDPI AG
2024-11-01
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| author | Shiwei Chen Xiaojiao Fu Peiling Meng Lei Cheng Lifang Wang Jing Yuan |
| author_facet | Shiwei Chen Xiaojiao Fu Peiling Meng Lei Cheng Lifang Wang Jing Yuan |
| author_sort | Shiwei Chen |
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| description | Shear Thickening Fluid (STF) is a specialized high-concentration particle suspension capable of rapidly and reversibly altering its viscosity when exposed to sudden impacts. Consequently, STF-based dampers deliver a self-adaptive damping force and demonstrate significant potential for applications in structural vibration control. This study presents both a modeling and experimental investigation of a novel double-rod structured STF damper. Initially, a compound STF is formulated using silica particles as the dispersed phase and polyethylene glycol solution as the dispersing medium. The rheological properties of the STF are then experimentally evaluated. The STF’s constitutive rheological behavior is described using the G-R model. Following this, the flow behavior of the STF within the damper’s annular gap is explored, leading to the development of a two-dimensional axisymmetric fluid simulation model for the damper. Based on this model, the dynamic mechanism of the proposed STF damper is analyzed. Subsequently, the STF damper is optimally designed and subjected to experimental investigation using a dynamic testing platform under different working conditions. The experimental results reveal that the proposed STF damper, whose equivalent stiffness can achieve a nearly threefold change with excitation frequency and amplitude, exhibits good self-adaptive capabilities. By dividing the damper force into two parts: the frictional damping pressure drop, and the osmotic pressure drop generated by the “Jamming effect”. A fitting model is proposed, and it aligns closely with the nonlinear performance of the STF damper. |
| format | Article |
| id | doaj-art-006a503da817446aaa2aa387429648ea |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-006a503da817446aaa2aa387429648ea2024-11-26T17:56:04ZengMDPI AGBuildings2075-53092024-11-011411354810.3390/buildings14113548Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid DamperShiwei Chen0Xiaojiao Fu1Peiling Meng2Lei Cheng3Lifang Wang4Jing Yuan5School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaShear Thickening Fluid (STF) is a specialized high-concentration particle suspension capable of rapidly and reversibly altering its viscosity when exposed to sudden impacts. Consequently, STF-based dampers deliver a self-adaptive damping force and demonstrate significant potential for applications in structural vibration control. This study presents both a modeling and experimental investigation of a novel double-rod structured STF damper. Initially, a compound STF is formulated using silica particles as the dispersed phase and polyethylene glycol solution as the dispersing medium. The rheological properties of the STF are then experimentally evaluated. The STF’s constitutive rheological behavior is described using the G-R model. Following this, the flow behavior of the STF within the damper’s annular gap is explored, leading to the development of a two-dimensional axisymmetric fluid simulation model for the damper. Based on this model, the dynamic mechanism of the proposed STF damper is analyzed. Subsequently, the STF damper is optimally designed and subjected to experimental investigation using a dynamic testing platform under different working conditions. The experimental results reveal that the proposed STF damper, whose equivalent stiffness can achieve a nearly threefold change with excitation frequency and amplitude, exhibits good self-adaptive capabilities. By dividing the damper force into two parts: the frictional damping pressure drop, and the osmotic pressure drop generated by the “Jamming effect”. A fitting model is proposed, and it aligns closely with the nonlinear performance of the STF damper.https://www.mdpi.com/2075-5309/14/11/3548shear thickening fluidsmart dampershear thickening fluid-based damper |
| spellingShingle | Shiwei Chen Xiaojiao Fu Peiling Meng Lei Cheng Lifang Wang Jing Yuan Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper Buildings shear thickening fluid smart damper shear thickening fluid-based damper |
| title | Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper |
| title_full | Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper |
| title_fullStr | Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper |
| title_full_unstemmed | Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper |
| title_short | Fluid Flow Modeling and Experimental Investigation on a Shear Thickening Fluid Damper |
| title_sort | fluid flow modeling and experimental investigation on a shear thickening fluid damper |
| topic | shear thickening fluid smart damper shear thickening fluid-based damper |
| url | https://www.mdpi.com/2075-5309/14/11/3548 |
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