Predicting the damping characteristics of vibration dampers employing generalized shear thickening fluids

Nagy-György, Péter; Hős, Csaba

doi:10.1016/j.jsv.2021.116116

Cited by 14 publications

(9 citation statements)

References 38 publications

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“…There was a more than 90% reduction in the vibration amplitude of the system at 1580 Hz after using pads based on Z-ABS (decrease in the amplitude from 0.0225 mm/N to 0.0016 mm/N). Such excellent damping properties at high frequencies probably benefit from the fact that ABS is essentially amorphous [ 19 ]. At the same frequency, the application of polymeric pads from Z-PLA, Z-NYLON, and Z-SEMIFLEX improved the damping ability of a steel frame in a comparable manner (~70% decrease in amplitude of the receptance function).…”

Section: Resultsmentioning

confidence: 99%

“…The parameters are changed to increase the ability of the entire system to dissipate vibration energy [ 16 ]. Passive vibration suppression systems typically use a viscoelastic damping layer [ 17 ], fluids [ 18 ], non-Newtonian fluids [ 19 ], or materials such as metal foams [ 20 ]. However, at a time of rapid development of polymeric materials and composites, recent studies have shown that the mentioned materials give promising results in terms of vibration energy dissipation [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Towards Highly Efficient, Additively Manufactured Passive Vibration Eliminators for Mechanical Systems

et al. 2023

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Structural damping largely determines the dynamic properties of mechanical structures, especially those whose functioning is accompanied by time-varying loads. These loads may cause vibrations of a different nature, which adversely affects the functionality of the structure. Therefore, many studies have been carried out on vibration reduction methods over the last few years. Among them, the passive vibration damping method, wherein a suitable polymer system with appropriate viscoelastic properties is used, emerges as one of the simplest and most effective methods. In this view, a novel approach to conduct passive elimination of vibrations, consisting of covering elements of structures with low dynamic stiffness with polymeric pads, was developed. Herein, polymer covers were manufactured via fused filament fabrication technology (3D printing) and were joined to the structure by means of a press connection. Current work was focused on determining the damping properties of chosen polymeric materials, including thermoplastic elastomers (TPE). All investigated materials were characterized by means of differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), and mechanical properties (tensile test and Shore hardness). Lastly, the damping ability of pads made from different types of polymers were evaluated by means of dynamic tests.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Towards Highly Efficient, Additively Manufactured Passive Vibration Eliminators for Mechanical Systems

et al. 2023

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“…A recent noteworthy development involves a substantial increase in the viscosity of shear thickening fluid (STF), which presents significant potential in areas such as human protection, [17][18][19][20] impact resistance, [21][22][23][24][25] and vibration control. [26][27][28][29] This potential stems from the ability of STF to absorb impact energy through its shear thickening mechanism. As a result, the integration of STF is expected to enhance the impact mechanical properties of FRP when exposed to high-velocity impact loads.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement effect of shear thickening fluid on impact properties of aramid, basalt, and carbon fiber reinforced polymer using a split Hopkinson pressure bar

Huang,

Chen,

Zhu

et al. 2023

Journal of Industrial Textiles

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This study focuses on investigating the impact properties of fiber-reinforced polymer (FRP) materials impregnated with shear thickening fluid (STF) under high strain rates using a split Hopkinson pressure bar (SHPB) test. The study involves the preparation of three types of FRP materials, namely aramid FRP (AFRP), basalt FRP (BFRP), and carbon FRP (CFRP), which are subsequently impregnated with STF to develop FRP composite materials (referred to as FRP-STF). The STF used in the experiment is synthesized by dispersing 15.0 wt.% and 20.0 wt.% of 12 nm silica in Polyethylene glycol. The results of rheological tests show a significant shear thickening effect on viscosity for both STFs. Furthermore, the SHPB tests demonstrate a noteworthy improvement in the impact performance of AFRP, BFRP, and CFRP under high strain rates when impregnated with STF. However, the extent of this improvement varies among the different types of FRP materials. For instance, BFRP exhibits the highest increase in stress peak, reaching 58.9% under a strain rate of 3800 s⁻1 and an STF mass fraction of 20%. AFRP demonstrates the most significant increase in energy absorption, reaching 226.8%. When subjected to a strain rate of 6100 s⁻1, the AFRP-20% STF composite exhibits a highly favorable stress response, while the CFRP-20% STF composite shows an energy absorption of 710.5 J, approximately 3.3 times higher than that of pure CFRP. These trends are also evident in the energy absorption per unit density curve.

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“…In addition, based on the idea of phenomenological representation, the nite difference method and Poiseuille's laminar ow hypothesis were used to solve the differential equation for arbitrary rheology. 6,7 The above-mentioned study of uid constitutive characterization provides a theoretical basis for the performance simulation and prediction of damping characteristics, velocity characteristics and system design optimization. 8 In the eld of bulletproof materials, the nano/micro-scaled suspension can be used for the preparation of bulletproof composite materials.…”

Section: Introductionmentioning

confidence: 99%

Field-induced rheological characterization of nano/micro-scaled suspensions based on a multi-peak fitting method

et al. 2022

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Predicting the damping characteristics of vibration dampers employing generalized shear thickening fluids

Cited by 14 publications

References 38 publications

Towards Highly Efficient, Additively Manufactured Passive Vibration Eliminators for Mechanical Systems

Towards Highly Efficient, Additively Manufactured Passive Vibration Eliminators for Mechanical Systems

Reinforcement effect of shear thickening fluid on impact properties of aramid, basalt, and carbon fiber reinforced polymer using a split Hopkinson pressure bar

Field-induced rheological characterization of nano/micro-scaled suspensions based on a multi-peak fitting method

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