Prediction of vibration characteristics in beam structure using sub-scale modeling with experimental validation

Zai, Behzad Ahmed; Sami, Saad; Khan, Muhammad Amir; Ahmad, Furqan; Park, Myung Kyun

doi:10.3901/cjme.2015.0612.080

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…The scale factor η was set to 10,000. However, since the focus of the study lied on the effect of structural patterns present in diatoms on eigenfrequencies and mode shapes, and studies show that eigenfrequencies scale with the factor 1/η [26,27], the difference in dimension is acceptable. In addition, the chosen model size permits a future manufacturing of the designed structures using 3D printing technologies for experimental studies.…”

Section: Constructionmentioning

confidence: 99%

See 1 more Smart Citation

Natural Frequencies of Diatom Shells: Alteration of Eigenfrequencies Using Structural Patterns Inspired by Diatoms

Andresen,

Linnemann,

Ahmad Basri

et al. 2024

Biomimetics

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Diatoms have delicate and complex shells showing different lightweight design principles that have already been applied to technical products improving the mechanical properties. In addition, diatom inspired structures are expected to significantly affect the vibration characteristics, i.e., the eigenfrequencies. Directed eigenfrequency shifts are of great interest for many technical applications to prevent undesired high vibration amplitudes. Therefore, numerous complex diatom inspired dome structures primarily based on combs, ribs, and bulging patterns were constructed and their eigenfrequencies were numerically studied. Different structural patterns were identified to significantly affect eigenfrequencies. The results were compared to dome structures equipped with rib patterns in combination with a common structural optimization tool. The study indicates that a combination of (1) selecting diatom inspired structural patterns that strongly affect eigenfrequencies, and (2) adapting them to the boundary conditions of the technical problem is an efficient method to design diatom inspired lightweight solutions with high eigenfrequencies.

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Section: Constructionmentioning

confidence: 99%

“…As already mentioned, the diatom-inspired models were scaled with a factor of η = 10,000. It has been proposed that eigenfrequencies scale with 1/η [26,27]. Thus, the here simulated eigenfrequencies were scaled to obtain the eigenfrequencies for models in the dimensions of real diatoms.…”

Section: Diatom-inspired Dome Structuresmentioning

confidence: 99%

Natural Frequencies of Diatom Shells: Alteration of Eigenfrequencies Using Structural Patterns Inspired by Diatoms

Andresen,

Linnemann,

Ahmad Basri

et al. 2024

Biomimetics

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show abstract

“…PZT piezoelectric ceramics mainly include the following series: PZT-4, PZT-5A, PZT-5H, PZT-8, etc. With large relative dielectric constant and fast charge and discharge, PZT-5 is suitable for high-frequency converter material, while PZT-5 has large dielectric constant and slow charge and discharge speed [19][20].…”

Section: Selection Of Piezoelectric Ceramicsmentioning

confidence: 99%

Vibration Characteristics of Piezoelectric Ceramic Elements with Large Anisotropy and Its Application in Ultrasonic Probe

2021

IJSSEM

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With the development of ultrasonic machining technology, meeting the needs of modern industrial production, improving product quality and efficiency and reducing cost have become one of the urgent problems to be solved. Using piezoelectric ceramics to study the vibration characteristics of materials has become the most important and effective means. Piezoelectric ceramics is a new type of composite material. It has high power density, low loss, dielectric constant and good mechanical properties. It can obtain good machining effect in ultrasonic machining. Therefore, in this paper, the application of piezoelectric ceramic materials in ultrasonic probe is studied according to the vibration characteristics of piezoelectric ceramic materials. Firstly, this paper introduces the research status of piezoelectric ceramic materials, summarizes the characteristics of different piezoelectric ceramic materials, analyzes and summarizes their characteristics under different parameters, and then compares various parameters. Finally, the experimental results are as follows: PMN-PT raw materials have very good properties and have been commercialized in recent years. If it can be used in this field, it will have superior properties that other raw materials can't compare. Under the same structure and voltage, the maximum output displacement of piezoelectric laminate is larger than pzt5a, which also verifies that pzt4 is a transmitting piezoelectric ceramic and pzt5a is a receiving piezoelectric ceramic. When the stress is applied at the centroid of the fractal piezoelectric ceramic vibrator, the strain degree of the whole structure will increase with the increase of the distance from the centroid. According to the forward piezoelectric effect of piezoelectric materials, the greater the degree of deformation, the greater the voltage generated on the surface of piezoelectric materials.

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Vibration Characteristics of Piezoelectric Ceramic Elements with Large Anisotropy and Their Application in Ultrasonic Probes

Niu,

Li,

Zhao

et al. 2023

Strength Mater

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Prediction of vibration characteristics in beam structure using sub-scale modeling with experimental validation

Cited by 6 publications

References 6 publications

Natural Frequencies of Diatom Shells: Alteration of Eigenfrequencies Using Structural Patterns Inspired by Diatoms

Natural Frequencies of Diatom Shells: Alteration of Eigenfrequencies Using Structural Patterns Inspired by Diatoms

Vibration Characteristics of Piezoelectric Ceramic Elements with Large Anisotropy and Its Application in Ultrasonic Probe

Vibration Characteristics of Piezoelectric Ceramic Elements with Large Anisotropy and Their Application in Ultrasonic Probes

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