Numerical simulation on high speed impact behavior of Al-W and Al-Ni mixture

Chung, Kyungsun; Kwon, Hyoungjoon; Park, Jung Su

doi:10.1007/s12206-018-0910-5

Cited by 2 publications

(3 citation statements)

References 23 publications

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“…[64] (b) The relationship between U s and U p during impact compression of Ni. The squares correspond to our MD simulation results; The circles and triangles correspond to the experimental results of Chung et al [65] and Marsh, [64] respectively; The triangles correspond to the MD simulation results of Choi et al [63] non-metallic homogeneous nanospheres. [42,44] This shows that contact force is independence on the externally applied impact velocity at low velocities.…”

Section: Investigation Of Contact Behaviormentioning

confidence: 94%

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Shock‐Induced Microstructural Evolution, Phase Transformation, Sintering of Al‐Ni Dissimilar Nanoparticles: A Molecular Dynamics Study

Jiang,

Sun,

Luo

2023

ChemPhysChem

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Molecular dynamic simulations have been performed to explore contact behavior, microstructure evolution and sintering mechanism of Al‐Ni dissimilar nanoparticles under high‐velocity impact. We confirmed that the simulated contact stress, contact radius, and contact force under low‐velocity impact are in good agreement with the predicted results of the Hertz model. However, with increasing the impact velocity, the simulated results gradually deviate from the predicted results of the Hertz model due to the elastic‐plastic transition and atomic discrete structure. The normalized contact radius versus strain exhibits a weak dependence on nanosphere diameter. Below a critical velocity, there are very few HCP atoms in the nanospheres after thermal equilibrium. There are two different sintering mechanisms: under low‐velocity impact, the sintering process relies mainly on the dislocation slip of Al nanospheres, while the dislocation slip of Ni nanospheres and the atomic diffusion of Al nanospheres predominate under high‐velocity impact.

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Section: Investigation Of Contact Behaviormentioning

confidence: 94%

“…(b) The relationship between U s and U p during impact compression of Ni. The squares correspond to our MD simulation results; The circles and triangles correspond to the experimental results of Chung et al[65] and Marsh,[64] respectively; The triangles correspond to the MD simulation results of Choi et al[63]…”

mentioning

confidence: 98%

Shock‐Induced Microstructural Evolution, Phase Transformation, Sintering of Al‐Ni Dissimilar Nanoparticles: A Molecular Dynamics Study

Jiang,

Sun,

Luo

2023

ChemPhysChem

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“…Throughout the past, vertical take-off and landing (VTOL) aircraft have been conveyed predominantly for military activities due to their lack of a requirement of runways, mostly in the navy and marines, e.g; BAE harrier, Bell-Boeing V22 Osprey, and Lockheed martin f-35b lighting II [8], [9].On the other hand, little commitment has been made back then into developing the common aviation side of VTOL capabilities, because of its high fuel consumption, restricted payload capacity, and excessive noise. Nevertheless, this changed when researchers and big companies showed interest in VTOL capabilities for Intra and inter-city utilization, which is expected to have a big impact on the industry.…”

Section: Introductionmentioning

confidence: 99%

Trends and Challenges in Realizing a Flying Car

Qusai Sulaiman Al Farsi

2024

jes

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Since the 20th century, researchers have worked to create a new concept that combines airplanes and automotive parts. This effort has led to many prototypes, conducted feasibility studies, and examined strategic approaches. Despite many debates, flying vehicles are viewed as a promising future transportation option. This study examines the history and future of flying cars, as well as their implementation challenges and technological advances. Flying cars with STOL and VTOL capabilities are reviewed. VTOL vehicle electrification and decarbonization are thought to be the future of flying cars. Lift and Cruise, Vectored Thrust, and Multicopters were the three main VTOL thrust types examined for performance. The study evaluated promising electric and hybrid VTOLs on the market. The flying car's aerodynamics, range, endurance, and cruising speed were considered in the feasibility analysis. The data show similarities amongst flying vehicles with similar propulsion technologies.

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Numerical simulation on high speed impact behavior of Al-W and Al-Ni mixture

Cited by 2 publications

References 23 publications

Shock‐Induced Microstructural Evolution, Phase Transformation, Sintering of Al‐Ni Dissimilar Nanoparticles: A Molecular Dynamics Study

Shock‐Induced Microstructural Evolution, Phase Transformation, Sintering of Al‐Ni Dissimilar Nanoparticles: A Molecular Dynamics Study

Trends and Challenges in Realizing a Flying Car

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