Volume 35 Issue 11
Nov.  2020
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ZHANG Long, CHENG Jun, QIU Rongkai. Multiscale damage simulation of plain weave composites ,based on 3D general method of cells[J]. Journal of Aerospace Power, 2020, 35(11): 2275-2283. doi: 10.13224/j.cnki.jasp.2020.11.004
Citation: ZHANG Long, CHENG Jun, QIU Rongkai. Multiscale damage simulation of plain weave composites ,based on 3D general method of cells[J]. Journal of Aerospace Power, 2020, 35(11): 2275-2283. doi: 10.13224/j.cnki.jasp.2020.11.004
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Multiscale damage simulation of plain weave composites ,based on 3D general method of cells

doi: 10.13224/j.cnki.jasp.2020.11.004

  • Facility Design and Instrumentation Institute,China Aerodynamics Research and Development Center,Mianynag Sichuan 621000,China

  • Received Date: 2020-04-17
  • Publish Date: 2020-11-28
    Abstract
  • In order to solve the technical difficulty of operating multiscale simulation on the braided composites of highly complicated mesoscopic structure, a multiscale damage simulation method based on 3D general method of cells(GMC) model was developed. Based on the basic theory of the GMC method, the conversion formula of macroscopic and mesoscopic parameters was derived, and the iterative process of macroscopic and mesoscopic damage increment steps was developed. Taking the 2D plain weave ceramic matrix composite as an example, the mesoscopic damage simulation on the unit cell was examined and the multi-scale damage simulation on the flat test piece of the 2D plain weave composites was performed. The mesoscopic damage contours and macroscopic stress-strain curve were obtained. The research revealed that the unit cell mesoscopic damage process simulated by the method agreed with the damage mechanism described in the related literatures. The predicted stress-strain curve during the damage process of the flat test specimen was consistent with the test results, and the relative error of the predicted intensity value was less than 5%.

     

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