Strength-based collaborative topology optimization for continuous fiber reinforced composites

Li, Guixing1,2; Chen, Yuan1,2; Li, Qing3

2024-10-01

10.1016/j.cma.2024.117206

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING   影响因子和分区

0045-7825

1879-2138

The diverse and complex failure modes of carbon fiber reinforced plastic (CFRP) composites impose a significant challenge on optimization of both structural topology and fiber path. This study aims to develop a novel strength-based collaborative optimization of topological layout and fiber path (namely SCOTF) for continuous fiber reinforced composite structures through a level set algorithm with a parameterized stream function. The level set function for characterizing structural topology and the stream function for portraying fiber path are decomposed into a sum of weights associated with a series of radial basis functions. In this approach, the weights are treated as design variables to update the topological layout and fiber path of CFRP structure. To enhance mechanical strength, the design objective is established in terms of the Tsai-Wu strength criterion with mathematical derivation of analytical sensitivity. The effectiveness and reliability of SCOTF are demonstrated by three illustrative examples to compare with other two conventional methods, namely a maximum principal stress-based fiber placement and a stiffness-based design. In comparison, the structural strength optimized by SCOTF increase by 28.9 % and 42.8 %, respectively, proving that SCOTF can generate more effective topological layouts with smooth and continuous fiber paths, appreciably alleviating the concentration of failure index and lowering damage and failure of CFRP composite structures. The proposed approach is anticipated to provide a new tool for the strength-based design of fiber reinforced plastic composite structures.

Strength Topology optimization Fiber path Collaborative optimization Stream function Additive manufacturing

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology Program, China[JCYJ20230807093602005] ; National Natural Science Foundation of China[12302177] ; Guangdong Basic and Applied Basic Research Foundation, China[2024A1515010203] ; Shenzhen Key Laboratory of Intelligent Manufacturing for Continuous Carbon Fibre Reinforced Composites[ZDSYS20220527171404011] ; Guangdong University Key-Area Special Program[2023ZDZX2025]

Engineering ; Mathematics ; Mechanics

Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics

WOS:001271043700001

ELSEVIER SCIENCE SA

20242916712034

3D printing ; Carbon fiber reinforced plastics ; Ductile fracture ; Fibers ; Radial basis function networks ; Structural optimization ; Structure (composition) ; Topology

Printing Equipment:745.1.1 ; Polymer Products:817.1 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Optimization Techniques:921.5 ; Materials Science:951

COMPUTER SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Key Lab Intelligent Mfg Continuous Carbon, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Sch Syst Design & Intelligent Mfg SDIM, Shenzhen 518055, Peoples R China
3.Univ Sydney, Ctr Adv Mat Technol CAMT, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

Li, Guixing,Chen, Yuan,Li, Qing. Strength-based collaborative topology optimization for continuous fiber reinforced composites[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2024,430.

Li, Guixing,Chen, Yuan,&Li, Qing.(2024).Strength-based collaborative topology optimization for continuous fiber reinforced composites.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,430.

Li, Guixing,et al."Strength-based collaborative topology optimization for continuous fiber reinforced composites".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 430(2024).