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Application of a damage mechanics model for predicting the impact response of composite materials

Authors
Journal
Computers & Structures
0045-7949
Publisher
Elsevier
Publication Date
Volume
79
Issue
10
Identifiers
DOI: 10.1016/s0045-7949(00)00200-5
Keywords
  • Damage Mechanics
  • Strain Softening
  • Constitutive Model
  • Finite Element Analysis
  • Ls-Dyna
  • Impact
Disciplines
  • Physics

Abstract

Abstract A plane-stress continuum damage mechanics (CDM) based model for composite materials is implemented in the non-linear finite element code, LS-DYNA3D and its predictive capability is evaluated by carrying out a series of numerical simulations involving impact of laminated composite plates. The performance of the model relative to that of an existing model in LS-DYNA3D is assessed by comparing the computed results with instrumented impact test results. It is demonstrated that a CDM based approach offers a versatile tool for predicting damage progression in composite structures, however, the parameters used in such models are often non-physical and difficult to characterize.

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