Load path-guided fiber trajectory in composite panels: A comparative study and a novel combined method

Zhao，Shengjie1; Wu，Nan1; Wang，Quan2,3

2021-05-01

10.1016/j.compstruct.2021.113689

COMPOSITE STRUCTURES   影响因子和分区

0263-8223

1879-1085

Load path analysis enables researchers and engineers to investigate the load transfer inside a structure. To maximize the potential of composite structures, it is preferable to align reinforced fibers with physically determined load paths. In this paper, a series of load path-guided methods for fiber trajectory optimization is developed based on different load path definitions. A comprehensive comparison of the presented methods is conducted by numerical simulations on composite panels. The rationality of these methods is first verified by the load cases of unidirectional tension and compression. Next, four optimization examples with various loading conditions are provided to demonstrate their potential. The maximum displacement and Tsai-Wu failure index are employed to evaluate the global and local structural performance, respectively, of the optimized composite panels. According to the simulation results, the stress-based methods appear to be more robust and effective in enhancing the structural stiffness and/or failure resistance. A novel combined method is thereby proposed by merging both pointing stress vectors derived from the concept of load flow, which achieves the least deformation in all optimization examples. Further simulations of the combined load flow method reveal that minor fiber misalignment has little influence on the structural rigidity.

Composites Fiber trajectory Load path analysis Optimization

SCI ; EI

英语

其他

Natural Sciences and Engineering Research Council of Canada (NSERC)[05013-15]

Mechanics ; Materials Science

Mechanics ; Materials Science, Composites

WOS:000632435700005

ELSEVIER SCI LTD

20211010021663

Electric load flow ; Fibers ; Numerical methods ; Regression analysis ; Reinforced plastics

Structural Members and Shapes:408.2 ; Electric Power Systems:706.1 ; Polymer Products:817.1 ; Numerical Methods:921.6 ; Mathematical Statistics:922.2

MATERIALS SCIENCE

2-s2.0-85101821127

Scopus

1.Department of Mechanical Engineering,University of Manitoba,Winnipeg,R3T 5V6,Canada
2.Department of Civil and Environmental Engineering,Shantou University,Shantou,515063,China
3.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhao，Shengjie,Wu，Nan,Wang，Quan. Load path-guided fiber trajectory in composite panels: A comparative study and a novel combined method[J]. COMPOSITE STRUCTURES,2021,263.

Zhao，Shengjie,Wu，Nan,&Wang，Quan.(2021).Load path-guided fiber trajectory in composite panels: A comparative study and a novel combined method.COMPOSITE STRUCTURES,263.

Zhao，Shengjie,et al."Load path-guided fiber trajectory in composite panels: A comparative study and a novel combined method".COMPOSITE STRUCTURES 263(2021).