A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Resonating Periodic Lattice System for Efficient Vibration Isolation
https://orcid.org/http://orcid.org/0000-0001-8603-9608
Protecting structures and critical components from vibrations is essential from both safety and serviceability perspectives. Conventional passive methods for isolating systems from vibration involve using elastomers with specific stiffness and damping properties. The stiffness and damping in such cases are usually realized via the shear strength and the inherent material damping of the elastomer material, respectively. Periodic structures with unit cells of specific elastic properties repeating in particular directions possess unique bandgap characteristics. As a result, such structures allow only waves of specific frequencies to pass through and thus act as vibration filters. This property can be used to design efficient isolation systems to protect structures and critical components from undesirable vibrations. This study proposes a resonating periodic structure-based system to achieve efficient vibration isolation. Such structures are normally characterized using dispersion relations. Floquet-Bloch theorem will be used to obtain these relations, which are subsequently verified through finite element models. Two periodic configurations are adopted for the same mass of the isolator unit, and a genetic algorithm-based multi-objective optimization is performed to tune its bandgap characteristics. The performance of the tuned periodic structure is assessed by comparing it with an equivalent conventional elastomer system. The authors believe the proposed control schemes and dispersion relations can be adopted to isolate various components and systems from excessive vibrations.
A Resonating Periodic Lattice System for Efficient Vibration Isolation
https://orcid.org/http://orcid.org/0000-0001-8603-9608
Protecting structures and critical components from vibrations is essential from both safety and serviceability perspectives. Conventional passive methods for isolating systems from vibration involve using elastomers with specific stiffness and damping properties. The stiffness and damping in such cases are usually realized via the shear strength and the inherent material damping of the elastomer material, respectively. Periodic structures with unit cells of specific elastic properties repeating in particular directions possess unique bandgap characteristics. As a result, such structures allow only waves of specific frequencies to pass through and thus act as vibration filters. This property can be used to design efficient isolation systems to protect structures and critical components from undesirable vibrations. This study proposes a resonating periodic structure-based system to achieve efficient vibration isolation. Such structures are normally characterized using dispersion relations. Floquet-Bloch theorem will be used to obtain these relations, which are subsequently verified through finite element models. Two periodic configurations are adopted for the same mass of the isolator unit, and a genetic algorithm-based multi-objective optimization is performed to tune its bandgap characteristics. The performance of the tuned periodic structure is assessed by comparing it with an equivalent conventional elastomer system. The authors believe the proposed control schemes and dispersion relations can be adopted to isolate various components and systems from excessive vibrations.
A Resonating Periodic Lattice System for Efficient Vibration Isolation
https://orcid.org/http://orcid.org/0000-0001-8603-9608
Protecting structures and critical components from vibrations is essential from both safety and serviceability perspectives. Conventional passive methods for isolating systems from vibration involve using elastomers with specific stiffness and damping properties. The stiffness and damping in such cases are usually realized via the shear strength and the inherent material damping of the elastomer material, respectively. Periodic structures with unit cells of specific elastic properties repeating in particular directions possess unique bandgap characteristics. As a result, such structures allow only waves of specific frequencies to pass through and thus act as vibration filters. This property can be used to design efficient isolation systems to protect structures and critical components from undesirable vibrations. This study proposes a resonating periodic structure-based system to achieve efficient vibration isolation. Such structures are normally characterized using dispersion relations. Floquet-Bloch theorem will be used to obtain these relations, which are subsequently verified through finite element models. Two periodic configurations are adopted for the same mass of the isolator unit, and a genetic algorithm-based multi-objective optimization is performed to tune its bandgap characteristics. The performance of the tuned periodic structure is assessed by comparing it with an equivalent conventional elastomer system. The authors believe the proposed control schemes and dispersion relations can be adopted to isolate various components and systems from excessive vibrations.
A Resonating Periodic Lattice System for Efficient Vibration Isolation
Lecture Notes in Civil Engineering
Goel, Manmohan Dass (editor) / Biswas, Rahul (editor) / Dhanvijay, Sonal (editor) / Mahesh, M. J. (author) / Bhattacharya, Kanishka (author) / Ramesh Kumar, V. (author) / Prakash, Amar (author) / Anandavalli, N. (author)
Structural Engineering Convention ; 2023 ; Nagpur, India
2024-11-13
12 pages
Article/Chapter (Book)
Electronic Resource
English
Vibration Filter Using Vector Channel Periodic Lattice
| British Library Online Contents | 2006
Honeycomb type periodic row pile vibration isolation device
| European Patent Office | 2020
Vibration Isolation of Machine Foundations by Periodic Trenches
| Online Contents | 1998
Periodic vibration isolation pile for low-frequency vibration waves and construction method
| European Patent Office | 2024