Increasing Damping of Thin-Walled Structures Using Additively Manufactured Vibration Eliminators

Dunaj, Paweł; Berczyński, Stefan; Miądlicki, Karol; Irska, Izabela; Niesterowicz, Beata

doi:10.3390/ma13092125

Cited by 17 publications

(14 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The final design is shown in Figure 6 (iv.5) to accommodate 1 mm thick metal plates made from aluminium or stainless steel added as a spacer between the comb and the base. This modification aims to improve the sound quality by restricting the comb to touch the base directly and damping its vibration due to PLA properties [ 32 , 33 ].…”

Section: Resultsmentioning

confidence: 99%

Model optimization and performance evaluation of hand cranked music box base structure manufactured via 3D printing

Alfarisi

Santos

Norcahyo

et al. 2021

Heliyon

View full text Add to dashboard Cite

A sound produced from the music box could mesmerize music lovers. The complex mechanism that combined manual with semi-automatics movement creates the music box as a challenge for the manufacturer to innovate and optimize. This study focused on redesigning a hand-cranked music box's base structure using 3D printing and comparing the sound produced with the original model. It is shown that 3D printing can create a complex model with minimum material waste and good repeatability. After remodeling the music box's in a 3D CAD model, the prototype was built, and the tune played by each model was recorded and compared. The results showed that four improvements were made in the barrel mounting, crankshaft holder, crankshaft locker, and comb locker from the built four models. The sound analysis shows that the quality of sound can be improved by using the system's spacer. Furthermore, the finite element method and exact experiment results show that the loudest and best sound quality can be achieved using a 60° angle slope for the music box base structure.

show abstract

Section: Resultsmentioning

confidence: 99%

Model optimization and performance evaluation of hand cranked music box base structure manufactured via 3D printing

Alfarisi

Santos

Norcahyo

et al. 2021

Heliyon

View full text Add to dashboard Cite

show abstract

“…Furthermore, a new method was presented by Dunaj et al 60 to increase the damping efficiency of thin-walled structures by using covering components made of 3D-printd light materials. These components are simple in design and could be pressed directly on the target structures to make the right connection without the need for special kits.…”

Section: Metamaterialsmentioning

confidence: 99%

Advances in mechanical metamaterials for vibration isolation: A review

Rifaie

Abdulhadi

Mian

2022

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The adverse effect of mechanical vibration is inevitable and can be observed in machine components either on the long- or short-term of machine life-span based on the severity of oscillation. This in turn motivates researchers to find solutions to the vibration and its harmful influences through developing and creating isolation structures. The isolation is of high importance in reducing and controlling the high-amplitude vibration. Over the years, porous materials have been explored for vibration damping and isolation. Due to the closed feature and the non-uniformity in the structure, the porous materials fail to predict the vibration energy absorption and the associated oscillation behavior, as well as other the mechanical properties. However, the advent of additive manufacturing technology opens more avenues for developing structures with a unique combination of open, uniform, and periodically distributed unit cells. These structures are called metamaterials, which are very useful in the real-life applications since they exhibit good competence for attenuating the oscillation waves and controlling the vibration behavior, along with offering good mechanical properties. This study provides a review of the fundamentals of vibration with an emphasis on the isolation structures, like the porous materials (PM) and mechanical metamaterials, specifically periodic cellular structures (PCS) or lattice cellular structure (LCS). An overview, modeling, mechanical properties, and vibration methods of each material are discussed. In this regard, thorough explanation for damping enhancement using metamaterials is provided. Besides, the paper presents separate sections to shed the light on single and 3D bandgap structures. This study also highlights the advantage of metamaterials over the porous ones, thereby showing the future of using the metamaterials as isolators. In addition, theoretical works and other aspects of metamaterials are illustrated. To this end, remarks are explained and farther studies are proposed for researchers as future investigations in the vibration field to cover the weaknesses and gaps left in the literature.

show abstract

“…Currently, NDT based on ultrasound are one of the most popular methods of various material investigations, and they are used both in scientific research and in various industry branches [ 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. The possibility of qualitative (strength) classification of wood based on the propagation speed of ultrasonic and elasticity vibration waves results from the fact that the investigated values depend on the moisture content (MC), the occurrence of defects, species, and the direction of propagation that define its mechanical properties [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. The use of these methods is associated with the determination of the sonic modulus of elasticity (correlated with the static modulus), which allows for the complete assessment of wood quality [ 49 , 50 , 51 ].…”

Section: Introductionmentioning

confidence: 99%

The Strength of Pine (Pinus sylvestris L.) Sawn Timber in Correlation with Selected Wood Defects

et al. 2022

View full text Add to dashboard Cite

Pine timber of Polish origin intended for structural purposes is characterized by significant variability in the quality parameters. Technological suitability determined on the basis of relevant international classifications is based on the assessment of both selected mechanical and physical properties of wood. Moreover, the description of visual properties is also a valuable indicator regarding defect distribution. In the group of quality features playing a crucial role in the classification of sawn timber, there are knots, disruptions of grains, cracks, etc. Thus, the aim of the research was to determine the correlation between the presence of selected defects and the strength properties of individual timber pieces. This type of study is based on a nondestructive test method that allows for high optimization of sawn materials processing. In the case of sawn timber of Polish origin, the modulus of elasticity (MOE) determined using the sonic test is commonly used as a criterion. The research material was harvested from southern Poland. The results of the conducted studies confirmed a correlation between an increasing occurrence of particular types of defects and the results of MOE. Furthermore, as a result of the performed investigations, no significant effect of narrow surface cracks on strength properties was observed.

show abstract

Increasing Damping of Thin-Walled Structures Using Additively Manufactured Vibration Eliminators

Cited by 17 publications

References 31 publications

Model optimization and performance evaluation of hand cranked music box base structure manufactured via 3D printing

Model optimization and performance evaluation of hand cranked music box base structure manufactured via 3D printing

Advances in mechanical metamaterials for vibration isolation: A review

The Strength of Pine (Pinus sylvestris L.) Sawn Timber in Correlation with Selected Wood Defects

Contact Info

Product

Resources

About