Coupled thermal-mechanical damage model of laminated carbon fiber/resin composite subjected to lightning strike

Qi Dong, Guoshun Wan, Lu Ping, Yunli Guo, Xiaosu Yi, Yuxi Jia

Research output: Journal PublicationArticlepeer-review

19 Citations (Scopus)

Abstract

The degradation model of stiffness matrix containing thermal-mechanical coupling damage was constructed by the user-defined subroutine VUMAT on the basis of continuum damage mechanics (CDM) and phenomenological analysis method, then, it was introduced to the software ABAQUS/Explicit to simulate the damage caused by lightning induced effects of thermal ablation and expansion on carbon fiber reinforced polymer (CFRP) laminates. The results revealed the evolution of the coupling damage from the analysis of stress-strain state and damage variables involved. It can be concluded that the thermal-mechanical coupling model pushed the simulated in-plane damage much closer to the experimental results than thermal ablation model, and the good consistency of simulated in-depth damage and experimental results indicated that the lightning induced in-depth damage was mainly brought from the combined impacts of thermal ablation and expansion.

Original languageEnglish
Pages (from-to)185-193
Number of pages9
JournalComposite Structures
Volume206
DOIs
Publication statusPublished - 15 Dec 2018
Externally publishedYes

Keywords

  • Carbon fibers
  • Finite element analysis (FEA)
  • Laminate mechanics
  • Lightning strike damage
  • Thermal ablation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

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