Abstract
The layer nesting phenomenon of multilayer fabric has a great influence on the through-thickness permeability, which is a key parameter for the simulation of the through-thickness LCM (Liquid Composite Moldling) processes. In this paper, based on the analyses of the formation reason and characterization parameters of layer nesting, the geometry models of fabric unit-cells with nesting are established. The through-thickness flow in the unit-cell is analyzed to built the governing equations of the resin flow. The inter-yarn and intra-yarn regions of the unit-cell model are discretized uniformly, then the governing equations of the through-thickness flow are numerically solved based on Adams-Bashforth scheme and Chorin projection method, so the through-thickness flow parameters is obtained and the through-thickness permeability of the fabric with nesting can be predicted. The verification of the above method is implemented by comparisons with the available experimental results. A series of simulation experiments are carried out to investigate the nesting behaviors under different layer shifts, and the effects of nesting on the total thickness and through-thickness permeability of woven fabric are researched in detail.
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Acknowledgements
The presented work was supported by the National Natural Science Foundation of China (grant number 51605057); the Fundamental and Frontier Research Project of Chongqing (grant number cstc2016jcyjA0456); the China Postdoctoral Science Foundation (grant number 2016 M600721); and the Self-Planned Task of State Key Laboratory of Mechanical Transmission (grant number SKLMT-ZZKT-2016Z04), the Fundamental Research Funds for the Central Universities (grant number 106112017CDJXY110001).
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Yang, B., Wang, S. & Wang, Y. Effect of Nesting in Laminates on the Through-Thickness Permeability of Woven Fabrics. Appl Compos Mater 25, 1237–1253 (2018). https://doi.org/10.1007/s10443-018-9699-8
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DOI: https://doi.org/10.1007/s10443-018-9699-8