Topology optimization of magnetorheological smart materials included PnCs for tunable wide bandgap design

作     者：Kuan Liang Jingjie He Zhiyuan Jia Xiaopeng Zhang 梁宽;何经杰;贾智源;张晓鹏

作者机构：State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalian 116024China 

基　　金：supported by the National Natural Science Foundation of China(Grant No.12102079) 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2022年第38卷第3期

页      码：94-106,I0003页

摘      要：Design and application of tunable phononic crystals(PnCs)are attracting increasing interest due to their promising capabilities to manipulate acoustic and elastic waves *** paper investigates topology optimization of the magnetorheological(MR)materials including PnCs for opening the tunable and wide ***,the bandgap tunability of the PnCs is achieved by shear modulus variation of MR materials under a continuously changing applied magnetic *** pseudo elemental densities representing the bi-material distribution inside the PnC unit cell are taken as design variables and interpolated with an artificial MR penalization *** aggregated bandgap index for enveloping the extreme values ofbandgap width and tunable range of the MR included smart PnCs is proposed as the objective *** this context,the sensitivity analysis scheme is derived,and the optimization problem is solved with the gradient-based mathematical programming *** effectiveness of the proposed optimization method is demonstrated by numerical examples,where the optimized solutions present tunable and stably wide bandgap characteristics under different magnetic *** tunable optimized PnCs based device that can provide a wider tunable bandgap range is also explored.

主 题 词：Topology optimization Tunable bandgap Phononic crystals Magnetorheological material 

学科分类：12[管理学] 1201[管理学-管理科学与工程类] 07[理学] 070105[070105] 0701[理学-数学类] 

核心收录：

D　O　I：10.1007/s10409-021-09076-5

馆 藏 号：203111646...