An Experimental and Numerical Study on Impact and Compression after Impact of Stiffened Composite Panels

Wang, Peiyan; Chen, Yongshun; Yue, Chunxia; Zhao, Wei; Lian, Chenchen; Zhang, Ke; Jin, Zheng; Yue, Zhufeng

doi:10.3390/polym15010165

Cited by 9 publications

(1 citation statement)

References 31 publications

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“…In conclusion, summing up, it is necessary to pay attention to the practical significance and prospects for the development of the presented research. Since the energy criteria, including the differential energy criterion of destruction [45], used as the basis of this work, belong to fairly universal criteria, the methodology of the presented study can be adapted to the analysis of the mechanical behavior of not only wooden structures [45], but also composite materials [60][61][62], structures [63,64] and bone [65] under other types of loads in future research.…”

Section: Discussionmentioning

confidence: 99%

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

2023

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An experimental study and modeling of the behavior of wood during compression along the fibers was carried out. The nonlinear analytical dependence of the load on the strain was considered. Attention was focused on the post-peak stage of deformation in order to determine the load and displacement at which the transition to the stage of plastic deformation occurs. The work was aimed at substantiating the application of the energy criterion of brittle fracture as a criterion for the transition to the stage of plastic deformation. To achieve this goal, methods of mathematical modeling and analysis of test results were used. As an upshot, a simple and practical procedure was developed to predict the transition point to the above stage of plastic deformation. The simulation results were consistent with laboratory tests of samples and fragments of structures. The practical significance of this criterion lies in its possible use as an additional tool for analyzing the condition of some wooden structures. Energy criteria, including the one mentioned above, belong to fairly universal criteria. Accordingly, the research methodology can be adapted to analyze the behavior of, for example, composites under other types of loads in further studies.

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Section: Discussionmentioning

confidence: 99%

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

2023

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Effect of polymer crosslinking to the failure behavior of thermoplastic composite remelting interface: Molecular dynamics simulation and experimental verification

Dai,

Zhan,

Zhu

et al. 2024

Polymer Composites

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The forming interface is the weak link of thermoplastic composite complex structures. To explore the effect of polymer crosslinking on the failure behavior of thermoplastic composite remelting interface using “Preforming + Remelting bonding” process, the all‐atom models of different types of interfaces were established, and a molecular dynamics (MD) simulation was conducted on the uniaxial tensile failure process of the remelting interface. The failure behavior of the remelting interface with different preforming processes was tested to verify the correctness of MD simulation, and the influencing mechanism of polymer crosslinking reactions in the preforming stage to the remelting interface properties was clarified. The results showed that the yield stress of the uncrosslinked interface reaches 283.2 MPa and 16.0% and 50.6% higher than that of the unilateral and bilateral crosslinked interfaces respectively. The polymer crosslinking reaction during the preforming stage will reduce the interlaminar bonding performance. The interlaminar shear strength (ILSS) of the uncrosslinked interface is 87.46 MPa and 7.21% and 27.36% higher than that of the unilateral and bilateral crosslinked interface respectively, and only 3.95% lower than that of the non‐remelting sample formed by standard process. This research provides a new approach for predicting and analyzing the effect of polymer crosslinking on remelting interface properties of thermoplastic composite using “Preforming + Remelting bonding” process.Highlights The failure behavior of different thermoplastic composite remelting interfaces was studied. MD simulation was conducted on the uniaxial tensile failure process of the remelting interface. The influencing mechanism of polymer crosslinking reactions in the preforming stage to the remelting interface properties was clarified. It is effective to explore the failure mechanism of thermoplastic remelting interface by MD simulation.

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Experimental and numerical research on the calculation methods for buckling and post-buckling of aircraft tail inclined stiffened panel under compression load

Lian,

Wang,

Zhang

et al. 2024

Aerospace Science and Technology

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An Experimental and Numerical Study on Impact and Compression after Impact of Stiffened Composite Panels

Cited by 9 publications

References 31 publications

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

Effect of polymer crosslinking to the failure behavior of thermoplastic composite remelting interface: Molecular dynamics simulation and experimental verification

Experimental and numerical research on the calculation methods for buckling and post-buckling of aircraft tail inclined stiffened panel under compression load

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