Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Mechanics
Arindam Mukherji, James Njuguna
Summary: PFR/GFHC composite material is suitable for manufacturing lightweight vehicle structural components and body armor, with dynamic behavior measured through high-velocity impact experiments and Gruneisen parameter calculated.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Kai Zhao, Yunjun Gu, Fan Zhao, Qifeng Chen
Summary: This study investigates the dynamic response of Cerium under high pressure and temperature using large-scale atomistic simulations. The simulated phase transition behaviors agree reasonably well with previous experiments, confirming the validity of the interatomic potential. The effect of shear stress on the low-pressure γ→α phase transition of Cerium needs to be treated seriously.
MECHANICS OF MATERIALS
(2023)
Article
Engineering, Mechanical
Yunlong Guan, Weidong Song, Yunjiang Wang, Shanshan Liu, Yongji Yu
Summary: Shock characteristics of nanoglasses with gradient microstructures were investigated using molecular dynamics simulations. The results showed that the gradient structure affects the shock wave profiles but not the shock wave speeds. The indirect free-surface method is still applicable for estimating spall strength.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Chemistry, Physical
Daniel Thuermer, Shiteng Zhao, Orlando R. Deluigi, Camelia Stan, Iyad Alabd Alhafez, Herbert M. Urbassek, Marc A. Meyers, Eduardo M. Bringa, Nina Gunkelmann
Summary: The performance of the Cantor alloy at ultra-high deformation rates of shock waves is studied using both experiments and atomistic simulations, showing high spall strength that would be beneficial for certain applications. The differences between experiments and simulations can be explained by the difference in strain rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Aerospace
T. A. Rostilov, V. S. Ziborov
Summary: The behavior of spacecraft structural materials under high-velocity impact, specifically syntactic foam filled with glass microspheres, was studied. The wave profiles showed a complex two-wave configuration, with density decreasing as loading stress increased. Precursor waves did not reach stable states in the experiments.
Article
Engineering, Mechanical
Ankur Chaurasia, Rahul S. Mulik, Avinash Parashar
Summary: This article investigates the dynamic and structural response of h-BN reinforced PE nanocomposites under shock loading, revealing the importance of fabrication techniques and BNNP concentration in impacting the impact strength and plastic deformation mechanisms. Additionally, molecular dynamics simulations show that the orientation and distribution of BNNS play a crucial role in shock mitigation capabilities.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Physics, Multidisciplinary
Dayou Yang, Susana F. Huelga, Martin B. Plenio
Summary: Continuous monitoring of driven-dissipative quantum-optical systems is crucial for achieving highly precise measurements beyond the classical limit. We design a novel continuous-measurement strategy and develop a universal method to efficiently retrieve the quantum Fisher information. We also establish an effective formula for evaluating the quantum Fisher information of the emission field of driven-dissipative open sensors.
Article
Chemistry, Multidisciplinary
Qi Zhu, Jianli Shao, Pei Wang
Summary: Using molecular dynamics simulations, we investigated the deformation and spallation failure of bicrystal copper with a nanoscale He bubble induced by shock loading. Our results show that the He bubble hinders shock wave propagation at lower impact velocities but accelerates it at higher velocities due to the collapse of the bubble. The orientation parallel to the grain boundaries has a greater influence on the deformation of the He bubble. The bubble slightly reduces the spall strength of the material at lower impact velocities but has limited effect on the spallation process, which is dominated by the evolution of the grain boundaries.
Article
Materials Science, Multidisciplinary
Kai Zhao, Yang Li, Fan Zhao
Summary: The microstructure evolution of single crystal Al under shock loading is investigated using numerical simulations and shock wave theory. The results reveal that the plastic zone and dislocation multiplication can be controlled by engineering the distribution of microstructures and the propagation of transition waves.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Dayton G. Kizzire, Alex D. Greenhalgh, Max L. Neveau, Collin M. Pekol, Michael J. Thompson, Orlando Rios, David J. Keffer
Summary: A Modified Embedded Atom Method (MEAM) potential for γ-Ce has been generated for use in MD simulations, providing accurate estimates of material properties across a broad temperature range.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Sandeep Kumar Singh, Avinash Parashar
Summary: This article investigates the effects of shock compression on the deformation mechanism of high entropy alloys (HEA) using non-equilibrium molecular dynamics simulations. The simulations confirm the qualitative and quantitative agreement between the Hugoniot curves obtained and results reported using higher fidelity simulations and experimental techniques. The study shows that inserting voids in the path of the shock wave helps disperse the energy and reduce the speed of shock propagation, while lattice distortion blunts the shock front and dilutes its speed of propagation.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Engineering, Mechanical
Pengyu Chen, Xinxin Wang, Pei Wang, An-Min He
Summary: This study investigates the micro-spallation process of copper using a computationally efficient coarse-grained molecular dynamics (CGMD) method. The CGMD method is capable of reproducing results obtained by classical molecular dynamics (MD) method and provides consistent predictions of spall damage in copper. This method allows for the investigation of micro-spallation of copper at the mesoscale.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Computer Science, Interdisciplinary Applications
Dongyang Zou, Aldo Bonfiglioli, Renato Paciorri, Jun Liu
Summary: This paper introduces a new technique called the "embedded shock-fitting technique" with the capability to insert or remove shocks during the calculation. By defining subsets of grid-points, which can act as common- or shock-points, the length of existing shocks can be varied or new shock-branches can appear as needed.
COMPUTERS & FLUIDS
(2021)
Article
Engineering, Mechanical
I. A. Bryukhanov
Summary: Shock wave experiments show that annealed face-centered cubic metals exhibit an increasing yield strength with temperature at high strain rates. The effect of temperature on the structure and yield strength of shock waves and metal crystals remains unclear.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Engineering, Mechanical
Z. He, W. Qiu, Y. -N. Fan, Q. -N. Han, H. -J. Shi, X. Ma
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2018)
Article
Engineering, Mechanical
Shao-Shi Rui, Yi-Bo Shang, Yue Su, Wenhui Qiu, Li-Sha Niu, Hui-Ji Shi, Shunsaku Matsumoto, Yasuharu Chuman
INTERNATIONAL JOURNAL OF FATIGUE
(2018)
Article
Nanoscience & Nanotechnology
Shao-Shi Rui, Yi-Bo Shang, Ya-Nan Fan, Qi-Nan Han, Li-Sha Niu, Hui-Ji Shi, Keita Hashimoto, Nobuyoshi Komai
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Engineering, Mechanical
Xiao-Xiong Song, Yi-Bo Shang, Hui-Ji Shi, Li-Sha Niu, Zhao-Xi Wang
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2019)
Article
Engineering, Mechanical
Yue Su, Qi-Nan Han, Cheng-Cheng Zhang, Hui-Ji Shi, Li-Sha Niu, Guo-Jian Deng, Shao-Shi Rui
TRIBOLOGY INTERNATIONAL
(2019)
Article
Energy & Fuels
Zhihao Shang, Liang Dong, Lisha Niu, Huiji Shi