Experimental and Numerical Study on the Behavior of Dyneema� HB26 Composite in Compression

Bucur, Florina; Rotariu, Adrian; Matache, Liviu; Baciu, Florin; Jiga, Gabriel; Trana, Eugen

doi:10.37358/mp.20.2.5357

Cited by 4 publications

(5 citation statements)

References 22 publications

(28 reference statements)

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“…In this regard, for a better understanding of materials behavior, during the experimental tests (mechanical testing, ultrasonic testing), different types and configurations of samples and measurement tools have been tested (simple/bilayer/multilayer configurations, force or pressure transducers, videospeed cameras, scanning electron microscopy, computed tomography etc. ), in static, dynamic or impulsive regime, corroborated with numerical simulation, in order to obtain valid outcomes and results that can be extrapolated to large-scale experiments and applications [13,[20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Multilayered Plates with Hyperelastic Coatings Subjected to Dynamic Loadings by Impact at Low Velocities

Bucur,

Matache

2024

Mater. Plast.

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This paper describes the use of video and digital image processing in investigation of the impact between a rigid hemispherical shape impactor and Hybrid Polyurea-Polyurethane-MWCNTs Nanocomposite Coatings. An experimental study was performed for six sample configurations: single aluminum plates (reference test), multilayer plates with 4 types of coatings and double aluminum plates. The impact phenomenon was recorded with a high-speed video camera and the variation of the projectile s velocity during the impact was obtained through digital analysis. Additionally, the test was instrumented using a force sensor specially designed and mounted on the impactor. The video processing was used to draw the velocity curves and to estimate the evolution of the contact forces between the impactor and the multilayer structures, the results obtained being compared with the force sensor data. Some differences between these two types of measurements are observed, so in order to analyze the configurations behavior, a numerical study of the phenomena was performed in LS-DYNA software using a 2D axial symmetric model. The simulations showed that the profile of the force evolution measured with the sensor is affected by the chosen constructive solution and the data obtained based on the video images are more accurate. The deformations were analyzed, the maximum deformation based on image processing and the residual deformation based on 3D Scan post-test. The video technique combined with 3D Scan are precise enough to study the impact at low velocities and the numerical simulations provide results according to reality. The hyperelastic coatings contribute to a better resistance of the aluminum plates.

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Section: Introductionmentioning

confidence: 99%

“…The possibility to evaluate the behavior of polyurea in different configurations and for different loadings was investigated through numerical simulations with materials models available in computational codes, being obtained results similar to the real ones [11,13,25,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Multilayered Plates with Hyperelastic Coatings Subjected to Dynamic Loadings by Impact at Low Velocities

Bucur,

Matache

2024

Mater. Plast.

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“…Significant examples are hyperelastic materials [ 9 , 10 ], metal foams [ 11 , 12 , 13 ] and sandwich structures [ 14 ]. Detonation wave deflection: systems that deflect the blast away from the structure they are protecting, such as V-shells [ 15 , 16 , 17 ]. Shock wavefront braking: structures (perforated plates or a 3D architecture) designed to disrupt the shock wave front, placed between the detonation wave source and the target [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…Detonation wave deflection: systems that deflect the blast away from the structure they are protecting, such as V-shells [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Perforated Plate Mitigation Capacity to Near-Field Blasts

Puică¹,

Trană

Pupăză

et al. 2023

Materials

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Based on the analysis of existing collective shockwave protection methods worldwide, this paper addresses the mitigation of shock waves by means of passive methods, namely the use of perforated plates. Employing specialized software for numerical analysis, such as ANSYS-AUTODYN 2022R1®, the interaction of shock waves with a protection structure has been studied. By using this cost-free approach, several configurations with different opening ratios were investigated, pointing out the peculiarities of the real phenomenon. The FEM-based numerical model was calibrated by employing live explosive tests. The experimental assessments were performed for two configurations, with and without a perforated plate. The numerical results were expressed in terms of force acting on an armor plate placed behind a perforated plate at a relevant distance for ballistic protection in engineering applications. By investigating the force/impulse acting on a witness plate instead of the pressure measured at a single point, a realistic scenario can be considered. For the total impulse attenuation factor, the numerical results suggest a power law dependence, with the opening ratio as a variable.

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“…Gao et al [ 31 ] conducted dynamic compression tests on a woven glass‐fiber‐reinforced polymer composite and obtained a dynamic constitutive model based on the modified ZWT viscoelastic model. Bucur et al [ 32 ] studied the mechanical behavior of Dyneema® HB26 composite under static and dynamic out‐of‐plane compression. The results showed that the proposed constitutive model proves good correlation with Dyneema® HB26 mechanical behavior under compression loading.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite under dynamic compressive loading

et al. 2022

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In this work, mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite (CFRP) under dynamic compressive loading were investigated. An Instron testing machine and a pulse‐shaped split Hopkinson pressure bar (SHPB) apparatus were employed to test the quasi‐static and dynamic mechanical properties of the material, respectively. Digital image correlation (DIC) combined with ultra high‐speed photography was used to study the deformation and failure process of the specimen under dynamic loading. The results show that the failure modes of the material along the main direction were strain‐rate sensitive. The failure mode along the fiber direction was observed to change from crushing followed by fiber kink banding to predominantly interlaminar delamination, longitudinal cracking and fiber buckling delamination as the strain rate increases from quasi‐static to high strain rates. Furthermore, an empirical formula for dynamic compression strength was established based on the test data. Model predictions and experimental data are in very good agreement. Finally, a simplified Zhu‐Wang‐Tang (ZWT) nonlinear visco‐hyperelastic constitutive model ZWT nonlinear viscoelastic model was developed to predict the mechanical behaviors of CFRP under dynamic impact loading. The predicted values are observed to essentially match the trends of the experimental results. This research will further improve the design of CFRP composites subjected to high‐speed impact loads during service.

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Experimental and Numerical Study on the Behavior of Dyneema� HB26 Composite in Compression

Cited by 4 publications

References 22 publications

Assessment of Multilayered Plates with Hyperelastic Coatings Subjected to Dynamic Loadings by Impact at Low Velocities

Assessment of Multilayered Plates with Hyperelastic Coatings Subjected to Dynamic Loadings by Impact at Low Velocities

Experimental and Numerical Study on Perforated Plate Mitigation Capacity to Near-Field Blasts

Mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite under dynamic compressive loading

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