Damage characteristics and constitutive modeling of the 2D C/SiC composite: Part I – Experiment and analysis

Li, Jun; Jiao, Gangcheng; Wang, Bo; Yang, Chengpeng; Wang, Gang

doi:10.1016/j.cja.2014.10.026

Cited by 35 publications

(19 citation statements)

References 29 publications

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“…The off-axis tension tests conducted in Ref. 3 do create combined stress states; however, the results can be merely referred because the stress fields are non-uniform near the ends of specimens due to the constraint effects. So we assume different values of F 12 in the generalized tension and compression stress states:…”

Section: Failure Criterionmentioning

confidence: 98%

“…20 Based on these hypotheses, we introduced a set of in-plane scalar damage variables: d 1 , d 2 , d 6 (0 6 d i=1,2,6 6 1) in the material coordinate system with similar definitions in Ref. 3 :…”

Section: Stress/strain Relationshipsmentioning

confidence: 99%

“…3 Table 1 listed the elastic constants and some strength parameters obtained through the on-axis tension, compression and pure shear tests, and the other strength parameters F t 12 and F c 12 in Eq. (36) determined by means of inverse identification.…”

Section: Model Parametersmentioning

confidence: 99%

“…Firstly, let us briefly summarize the damage characteristics of the material under in-plane static mechanical loadings as observed in the experiment, 3 which include (1) The material shows remarkable non-linear stress/strain relationships due to the initiation and development of damage and inelastic strain when subjected to tension and/or shear loading condition. (2) Compared with the uniaxial tension and pure shear loading conditions, the combined tension and shear loads accelerate the growth rates of damage variables on the material's principle axes, and contrarily the compression stress partially impedes the shear damage evolution under combined compression and shear loadings.…”

Section: Materials Modelmentioning

confidence: 99%

“…1 However, it is not an easy task to achieve this goal 2 due to the complex damage mechanisms and the resultant non-linear mechanical behavior of this material. 3 Phenomenological continuum damage mechanics (CDM) models are generally based on the thermodynamics of irreversible processes, 4 in which the material damage is represented by internal variables. Although they cannot explicitly account for microscopic features like the microstructural evolution, 5 the CDM models are suitable for structural analysis and the model parameters can be determined by macroscopic experiments.…”

Section: Introductionmentioning

confidence: 99%

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Damage characteristics and constitutive modeling of the 2D C/SiC composite: Part II – Material model and numerical implementation

Jiao

Wang

et al. 2015

Chinese Journal of Aeronautics

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In this work, a macroscopic non-linear constitutive model accounting for damage, inelastic strain and unilateral behavior is proposed for the 2D plain-woven C/SiC composite. A set of scalar damage variables and a new thermodynamic potential expression are introduced in the framework of continuum damage mechanics. In the deduced constitutive equations, the material's progressive damage deactivation behavior during the compression loading is described by a continuous function, and different deactivation rates under uniaxial and biaxial compression loadings are also considered. In damage evolution laws, the coupling effect among the damage modes and impediment effect of compression stress on the development of shear damage in different plane stress states are taken into account. Besides, the general plasticity theory is applied to describing the evolution of inelastic strain in tension and/or shear stress state. The Tsai-Wu failure criterion is adopted for strength analysis. Additionally, the material model is implemented as a user-defined material subroutine (UMAT) and linked to the ABAQUS finite element software, and its performance is demonstrated through several numerical examples. ª 2015 Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA.

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Section: Failure Criterionmentioning

confidence: 98%

Section: Stress/strain Relationshipsmentioning

confidence: 99%

Section: Model Parametersmentioning

confidence: 99%

Section: Materials Modelmentioning

confidence: 99%