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High-fidelity prediction and temperature-rise mechanism for low-velocity impact of triaxially braided composites
https://orcid.org/0009-0002-1080-5120
https://orcid.org/0000-0003-4377-8376
Highlights Low-velocity impact failure behavior of a two-dimensional triaxially braided composite is experimentally and numerically studied. An anisotropic elastoplastic thermomechanical constitutive model is implemented in a meso‑scale finite element model. Low-velocity impact-induced temperature rise behavior is modeled and systemically analyzed. Fracture transformed energy of fiber bundle is identified to be the major source of the temperature rise.
Abstract An elastoplastic mechanical-thermal constitutive model was integrated into the development of a mesoscale finite element model. This model aimed to analyze the temperature rise phenomenon and failure behavior of composites under impact loading conditions. Triaxially braided carbon/epoxy composite specimens were subjected to low-velocity impact using a drop weight tester, and the temperature variations within the specimens were monitored using an infrared camera. The numerical predictions successfully reproduced the observed failure modes and accurately captured the temperature distribution. A numerical study was performed to explore the main factors of temperature rise, indicating that plastic work of pure matrix and fracture transformed energy of fiber tow are the primary sources of temperature rise. The transverse specimen was found to exhibit superior energy absorption capacity under high-energy impacts.
Graphical abstract Display Omitted
High-fidelity prediction and temperature-rise mechanism for low-velocity impact of triaxially braided composites
https://orcid.org/0009-0002-1080-5120
https://orcid.org/0000-0003-4377-8376
Highlights Low-velocity impact failure behavior of a two-dimensional triaxially braided composite is experimentally and numerically studied. An anisotropic elastoplastic thermomechanical constitutive model is implemented in a meso‑scale finite element model. Low-velocity impact-induced temperature rise behavior is modeled and systemically analyzed. Fracture transformed energy of fiber bundle is identified to be the major source of the temperature rise.
Abstract An elastoplastic mechanical-thermal constitutive model was integrated into the development of a mesoscale finite element model. This model aimed to analyze the temperature rise phenomenon and failure behavior of composites under impact loading conditions. Triaxially braided carbon/epoxy composite specimens were subjected to low-velocity impact using a drop weight tester, and the temperature variations within the specimens were monitored using an infrared camera. The numerical predictions successfully reproduced the observed failure modes and accurately captured the temperature distribution. A numerical study was performed to explore the main factors of temperature rise, indicating that plastic work of pure matrix and fracture transformed energy of fiber tow are the primary sources of temperature rise. The transverse specimen was found to exhibit superior energy absorption capacity under high-energy impacts.
Graphical abstract Display Omitted
High-fidelity prediction and temperature-rise mechanism for low-velocity impact of triaxially braided composites
https://orcid.org/0009-0002-1080-5120
https://orcid.org/0000-0003-4377-8376
Highlights Low-velocity impact failure behavior of a two-dimensional triaxially braided composite is experimentally and numerically studied. An anisotropic elastoplastic thermomechanical constitutive model is implemented in a meso‑scale finite element model. Low-velocity impact-induced temperature rise behavior is modeled and systemically analyzed. Fracture transformed energy of fiber bundle is identified to be the major source of the temperature rise.
Abstract An elastoplastic mechanical-thermal constitutive model was integrated into the development of a mesoscale finite element model. This model aimed to analyze the temperature rise phenomenon and failure behavior of composites under impact loading conditions. Triaxially braided carbon/epoxy composite specimens were subjected to low-velocity impact using a drop weight tester, and the temperature variations within the specimens were monitored using an infrared camera. The numerical predictions successfully reproduced the observed failure modes and accurately captured the temperature distribution. A numerical study was performed to explore the main factors of temperature rise, indicating that plastic work of pure matrix and fracture transformed energy of fiber tow are the primary sources of temperature rise. The transverse specimen was found to exhibit superior energy absorption capacity under high-energy impacts.
Graphical abstract Display Omitted
High-fidelity prediction and temperature-rise mechanism for low-velocity impact of triaxially braided composites
Liu, Peng (author) / Cai, Yinglong (author) / Zhao, Zhenqiang (author) / Zhang, Chao (author)
Thin-Walled Structures ; 195
2023-11-07
Article (Journal)
Electronic Resource
English
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