Details
| Original language | English |
|---|---|
| Article number | 115730 |
| Journal | Composite structures |
| Volume | 293 |
| Early online date | 13 May 2022 |
| Publication status | Published - 18 May 2022 |
Abstract
Fiber reinforced composites have very excellent mechanical properties due to their sophistic microstructures. At the same time these microstructures can induce complex failure mechanisms including intralaminar damage, interlaminar damage and the interactions between them. Nevertheless, high fidelity simulations for these complex failure mechanisms are still challenging. In this paper, we develop a double-phase field model for complex failure in fiber reinforced composite. In the model, two different phase fields, i.e., fiber phase field and matrix phase field, are adopted for characterizing fiber damage and matrix damage, respectively. The failure mechanisms of fiber damage as well as the other modes in matrix damage are identified through a new strain energy density form that contains four different effective strain variables as well as a new effective constitutive tensor. Then by coupling with redefined degradation functions corresponding to different failure mechanisms, specified damage initiation and evolution criteria can be embedded into the proposed model automatically. Moreover, the new model is implemented in an explicit manner. The proposed model is verified and validated through the comparison between the predicted results and that of the experiments on the failure in unidirectional block and composite laminate.
Keywords
- Composite laminate, Effective strain variables, Explicit scheme, Phase field model, Progressive failure
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Engineering(all)
- Civil and Structural Engineering
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In: Composite structures, Vol. 293, 115730, 18.05.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A double-phase field model for multiple failures in composites
AU - Zhang, Peng
AU - Tan, Siyuan
AU - Hu, Xiaofei
AU - Yao, Weian
AU - Zhuang, Xiaoying
N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 12172079 ).
PY - 2022/5/18
Y1 - 2022/5/18
N2 - Fiber reinforced composites have very excellent mechanical properties due to their sophistic microstructures. At the same time these microstructures can induce complex failure mechanisms including intralaminar damage, interlaminar damage and the interactions between them. Nevertheless, high fidelity simulations for these complex failure mechanisms are still challenging. In this paper, we develop a double-phase field model for complex failure in fiber reinforced composite. In the model, two different phase fields, i.e., fiber phase field and matrix phase field, are adopted for characterizing fiber damage and matrix damage, respectively. The failure mechanisms of fiber damage as well as the other modes in matrix damage are identified through a new strain energy density form that contains four different effective strain variables as well as a new effective constitutive tensor. Then by coupling with redefined degradation functions corresponding to different failure mechanisms, specified damage initiation and evolution criteria can be embedded into the proposed model automatically. Moreover, the new model is implemented in an explicit manner. The proposed model is verified and validated through the comparison between the predicted results and that of the experiments on the failure in unidirectional block and composite laminate.
AB - Fiber reinforced composites have very excellent mechanical properties due to their sophistic microstructures. At the same time these microstructures can induce complex failure mechanisms including intralaminar damage, interlaminar damage and the interactions between them. Nevertheless, high fidelity simulations for these complex failure mechanisms are still challenging. In this paper, we develop a double-phase field model for complex failure in fiber reinforced composite. In the model, two different phase fields, i.e., fiber phase field and matrix phase field, are adopted for characterizing fiber damage and matrix damage, respectively. The failure mechanisms of fiber damage as well as the other modes in matrix damage are identified through a new strain energy density form that contains four different effective strain variables as well as a new effective constitutive tensor. Then by coupling with redefined degradation functions corresponding to different failure mechanisms, specified damage initiation and evolution criteria can be embedded into the proposed model automatically. Moreover, the new model is implemented in an explicit manner. The proposed model is verified and validated through the comparison between the predicted results and that of the experiments on the failure in unidirectional block and composite laminate.
KW - Composite laminate
KW - Effective strain variables
KW - Explicit scheme
KW - Phase field model
KW - Progressive failure
UR - http://www.scopus.com/inward/record.url?scp=85130870506&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2022.115730
DO - 10.1016/j.compstruct.2022.115730
M3 - Article
AN - SCOPUS:85130870506
VL - 293
JO - Composite structures
JF - Composite structures
SN - 0263-8223
M1 - 115730
ER -