☆ 4.7 Article

Camouflaging the location of a sound source via topology-optimized source-shifter

JOURNAL OF SOUND AND VIBRATION (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Materials Science, Multidisciplinary

Labyrinthine Acoustic Metamaterials with a Subwavelength Bandgap Inspired by Topology-Optimized Structural Design

Yuki Noguchi et al.

Summary: In this study, a structural design for labyrinthine acoustic metamaterial is proposed using a topology optimization method to realize a subwavelength bandgap preventing the transmission of low-frequency sounds. The optimized design consists of air-filled channels of different widths, which exhibit the subwavelength bandgap based on the monopole resonance induced in the meta-atom. Numerical analysis based on the finite-element method demonstrates the low transmission coefficients of the obtained designs for a wide- and low-frequency range. Experimental results show the functionality of the optimized and simplified meta-atoms constructed using 3D printing.

ADVANCED ENGINEERING MATERIALS (2023)

添加到收藏夹

Article Optics

Electromagnetic-acoustic biphysical cloak designed through topology optimization

Garuda Fujii et al.

Summary: This study presents a multidisciplinary attempt for designing biphysical cloaks with triple-wave cloaking capabilities by developing topology optimization for controlling both electromagnetic and acoustic waves. The topology-optimized biphysical cloak cancels the scattering of the three waves and reproduces the original propagating waves, achieving the desired cloaking capability. Additionally, cloaking structures for multiple incident directions and different wavelengths are described.

OPTICS EXPRESS (2022)

添加到收藏夹

Article Physics, Applied

Conformal metamaterial coats for underwater magnetic-acoustic bi-invisibility

Junjie Zhan et al.

Summary: In this work, a bi-physical metamaterial invisible coating technique is proposed, which can effectively hide underwater objects from being detected via both magnetic fields and acoustic waves. This technique has the potential for important applications in military and civilian fields.

APPLIED PHYSICS LETTERS (2022)

添加到收藏夹

Article Materials Science, Multidisciplinary

Level set-based topology optimization for the design of labyrinthine acoustic metamaterials

Yuki Noguchi et al.

Summary: In this paper, a topology optimization method for the design of labyrinthine metamaterials with a large path length for acoustic wave propagation is presented. The optimal design of the labyrinthine structure is achieved by maximizing the pressure gradient in an air-filled region at a low frequency, using a level set-based optimization method and the concept of topological derivative. Numerical examples demonstrate the effectiveness of the proposed method.

MATERIALS & DESIGN (2022)

添加到收藏夹

Article Thermodynamics

Experimental demonstration of thermal cloaking metastructures designed by topology optimization

Kazuma Hirasawa et al.

Summary: Recent developments in information science have led to innovative advances in thermal flow manipulation. Topology optimization plays a crucial role in designing thermal metastructures, and the experimental results have shown comparable performance to numerical simulations.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2022)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

A topology optimisation of composite elastic metamaterial slabs based on the manipulation of far-field behaviours

Kei Matsushima et al.

Summary: The proposed numerical method focuses on topology optimisation of composite elastic metamaterial slabs, aiming to achieve anomalous functionalities such as perfect absorption, wave-mode conversion, and negative refraction. By utilizing the far-field characteristics of scattered waves instead of manipulating effective material constants, novel functionalities for waves in both low- and high-frequency ranges are achieved. The design sensitivity is rigorously derived and computed using a specific method, demonstrating the effectiveness of the proposed approach through numerical examples.

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION (2021)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

Optimal design of acoustic metamaterial cloaks under uncertainty

Peng Chen et al.

Summary: This study focuses on the optimal design of an acoustic cloak under uncertainty and develops scalable approximation and optimization methods to solve this problem. Numerical experiments demonstrate the scalability of the method with respect to the dimensions of design variables and uncertain parameters.

JOURNAL OF COMPUTATIONAL PHYSICS (2021)

添加到收藏夹

Article Physics, Applied

Acoustic cloak designed by topology optimization for acoustic-elastic coupled systems

Garuda Fujii et al.

Summary: This study focuses on developing optimal acoustic cloaks through topology optimization and acoustic-elastic interactions, in order to render objects unobservable to airborne and water-borne sounds. The designed cloaks are expressed as iso-surfaces representing sharp structural boundaries between acoustic and elastic media, ensuring that scatterers remain invisible to sound waves of multiple frequencies from various angles.

APPLIED PHYSICS LETTERS (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Magnetic-acoustic biphysical invisible coats for underwater objects

Yi Zhou et al.

NPG ASIA MATERIALS (2020)

添加到收藏夹

Article Multidisciplinary Sciences

Illusion for Airborne Sound Source by a Closed Layer with Subwavelength Thickness

Xu-Dong Fan et al.

SCIENTIFIC REPORTS (2019)

添加到收藏夹

Article Engineering, Mechanical

Design method for an acoustic cloak in flows by topology optimization

Zhengyu Ma et al.

ACTA MECHANICA SINICA (2019)

添加到收藏夹

Article Physics, Applied

Optimizing the structural topology of bifunctional invisible cloak manipulating heat flux and direct current

Garuda Fujii et al.

APPLIED PHYSICS LETTERS (2019)

添加到收藏夹

Article Engineering, Multidisciplinary

Optimum design of an acoustic metamaterial with negative bulk modulus in an acoustic-elastic coupled system using a level set-based topology optimization method

Yuki Noguchi et al.

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING (2018)

添加到收藏夹

Article Engineering, Multidisciplinary

CMA-ES-based structural topology optimization using a level set boundary expression-Application to optical and carpet cloaks

Garuda Fujii et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2018)

添加到收藏夹

Article Engineering, Multidisciplinary

Topology optimization for hyperbolic acoustic metamaterials using a high-frequency homogenization method

Yuki Noguchi et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2018)

添加到收藏夹

Article Engineering, Multidisciplinary

Optimum design of a multi-functional acoustic metasurface using topology optimization based on Zwicker's loudness model

Kohei Miyata et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2018)

添加到收藏夹

Article Engineering, Multidisciplinary

Computational material design for acoustic cloaking

Carlos Gustavo Mendez et al.

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING (2017)

添加到收藏夹

Article Acoustics

Translational illusion of acoustic sources by transformation acoustics

Fei Sun et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2017)

添加到收藏夹

Article Optics

Illusion optics via one-dimensional ultratransparent photonic crystals with shifted spatial dispersions

Zhongqi Yao et al.

OPTICS EXPRESS (2017)

添加到收藏夹

Review Nanoscience & Nanotechnology

Controlling sound with acoustic metamaterials

Steven A. Cummer et al.

NATURE REVIEWS MATERIALS (2016)

添加到收藏夹

Article Chemistry, Multidisciplinary

Invisible Sensors: Simultaneous Sensing and Camouflaging in Multiphysical Fields

Tianzhi Yang et al.

ADVANCED MATERIALS (2015)

添加到收藏夹

Article Physics, Applied

An acoustic metasurface design for wave motion conversion of longitudinal waves to transverse waves using topology optimization

Y. Noguchi et al.

APPLIED PHYSICS LETTERS (2015)

添加到收藏夹

Article Physics, Applied

Illusion optics: Optically transforming the nature and the location of electromagnetic emissions

Jianjia Yi et al.

JOURNAL OF APPLIED PHYSICS (2015)

添加到收藏夹

Article Engineering, Multidisciplinary

Camouflage devices with simplified material parameters based on conformal transformation acoustics

Chunyu Ren et al.

APPLIED MATHEMATICAL MODELLING (2014)

添加到收藏夹

Article Physics, Multidisciplinary

Experimental Demonstration of a Multiphysics Cloak: Manipulating Heat Flux and Electric Current Simultaneously

Yungui Ma et al.

PHYSICAL REVIEW LETTERS (2014)

添加到收藏夹

Article Physics, Applied

Experimentally demonstrated a unidirectional electromagnetic cloak designed by topology optimization

Lu Lan et al.

APPLIED PHYSICS LETTERS (2013)

添加到收藏夹

Article Mathematics, Applied

Topology optimization of an acoustic metamaterial with negative bulk modulus using local resonance

Lirong Lu et al.

FINITE ELEMENTS IN ANALYSIS AND DESIGN (2013)

添加到收藏夹

Article Operations Research & Management Science

Derivative-free optimization: a review of algorithms and comparison of software implementations

Luis Miguel Rios et al.

JOURNAL OF GLOBAL OPTIMIZATION (2013)

添加到收藏夹

Article Physics, Multidisciplinary

Playing the tricks of numbers of light sources

Huanyang Chen et al.

NEW JOURNAL OF PHYSICS (2013)

添加到收藏夹

Article Computer Science, Artificial Intelligence

A Method for Handling Uncertainty in Evolutionary Optimization With an Application to Feedback Control of Combustion

Nikolaus Hansen et al.

IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION (2009)

添加到收藏夹

Article Physics, Multidisciplinary

Scattering theory derivation of a 3D acoustic cloaking shell

Steven A. Cummer et al.

PHYSICAL REVIEW LETTERS (2008)

添加到收藏夹

Article Physics, Multidisciplinary

One path to acoustic cloaking

Steven A. Cummer et al.

NEW JOURNAL OF PHYSICS (2007)

添加到收藏夹

Article Multidisciplinary Sciences

Optical conformal mapping

Ulf Leonhardt

SCIENCE (2006)

添加到收藏夹

Article Multidisciplinary Sciences

Controlling electromagnetic fields

J. B. Pendry et al.

SCIENCE (2006)

添加到收藏夹

Article Chemistry, Physical

Ultrasonic metamaterials with negative modulus

Nicholas Fang et al.

NATURE MATERIALS (2006)

添加到收藏夹

Article Physics, Fluids & Plasmas

Double-negative acoustic metamaterial

J Li et al.

PHYSICAL REVIEW E (2004)

添加到收藏夹

Article Computer Science, Artificial Intelligence

Completely derandomized self-adaptation in evolution strategies

N Hansen et al.

EVOLUTIONARY COMPUTATION (2001)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.