Numerical and experimental investigation on topology optimization of an elongated dynamic system

被引：9

作者：

Lopes, Heitor Nigro ^{[1
]}

Cunha, Daniel Candeloro ^{[1
]}

Pavanello, Renato ^{[1
]}

Mahfoud, Jarir ^{[2
]}

机构：

[1] Univ Estadual Campinas, Sch Mech Engn, Dept Computat Mech, Rua Mendeleyev 200, BR-13083860 Campinas, Brazil

[2] Univ Lyon, INSA Lyon, CNRS, UMR5259,LaMCoS, F-69621 Villeurbanne, France

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2022年 / 165卷

基金：

巴西圣保罗研究基金会;

关键词：

Vibration; Topology optimization; Modal analysis; Manufacturing constraint; Experiment; VIBRATING CONTINUUM STRUCTURES; SHAPE OPTIMIZATION; STRUCTURAL DESIGN; FREQUENCY; MAXIMIZATION; EIGENFREQUENCIES; SEPARATION; ALGORITHM;

D O I：

10.1016/j.ymssp.2021.108356

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Minimizing vibration levels of dynamic components at their operating frequency range has been a widely studied topic in engineering. However, the design of structures that satisfy geometric constraints and technical performances is an ongoing challenge. In this work, a topology optimization procedure based on the Bi-directional Evolutionary Structural Optimization (BESO) algorithm is performed to maximize the natural frequency separation interval of an elongated structure. The issues of disconnected and trivial solutions are solved using a connectivity constraint. It is imposed by a proposed procedure based on the heat flux solution of an auxiliary system. An assessment of the feasibility of the structure is done by verifying its accordance with manufacturing and design constraints. The optimized structure was manufactured and validated experimentally. The implemented process produces topologies that maximize the natural frequency separation and reduce the mass of the structure. The obtained results demonstrate the effectiveness of the proposed procedure at satisfying geometric design constraints and technical performances.

引用

页数：15

共 37 条

[1] Damping modelling using generalized proportional damping [J].

Adhikari, S .

JOURNAL OF SOUND AND VIBRATION, 2006, 293 (1-2) :156-170

[2] GENERATING OPTIMAL TOPOLOGIES IN STRUCTURAL DESIGN USING A HOMOGENIZATION METHOD [J].

BENDSOE, MP ;

KIKUCHI, N .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 1988, 71 (02) :197-224

[3]

Bendsoe MP., 1989, STRUCTURAL OPTIMIZAT, V1, P193, DOI [DOI 10.1007/BF01650949, 10.1007/BF01650949]

[4] Microstructural topology optimization for minimizing the sound pressure level of structural-acoustic systems with multi-scale bounded hybrid uncertain parameters [J].

Chen, Ning ;

Xia, Siyuan ;

Liu, Jian ;

Ma, Zhengdong .

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2019, 134

[5] Creating acoustic topological insulators through topology optimization [J].

Chen, Yafeng ;

Meng, Fei ;

Huang, Xiaodong .

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2021, 146

[6] Topology optimization of bimorph piezoelectric energy harvesters considering variable electrode location [J].

de Almeida, Breno, V ;

Cunha, Daniel C. ;

Pavanello, Renato .

SMART MATERIALS AND STRUCTURES, 2019, 28 (08)

[7] CHECKERBOARD PATTERNS IN LAYOUT OPTIMIZATION [J].

Diaz, A ;

Sigmund, O .

STRUCTURAL OPTIMIZATION, 1995, 10 (01) :40-45

[8] Topological design of freely vibrating continuum structures for maximum values of simple and multiple eigenfrequencies and frequency gaps [J].

Du, Jianbin ;

Olhoff, Niels .

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 2007, 34 (02) :91-110

[9] A VARIATIONAL APPROACH TO THE THEORY OF THE ELASTIC BEHAVIOUR OF MULTIPHASE MATERIALS [J].

HASHIN, Z ;

SHTRIKMAN, S .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1963, 11 (02) :127-140

[10] Convergent and mesh-independent solutions for the bi-directional evolutionary structural optimization method [J].

Huang, X. ;

Xie, Y. M. .

FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2007, 43 (14) :1039-1049

← 1 2 3 4 →