Browsing by Author "Fadhil, Dalal Abbas"

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The effect of constant electric field on the crack growth process of aluminum nanosheet using molecular dynamics simulation
(Elsevier Science inc, 2024) Chen, Jinping; Salahshour, Soheıl; Mohammed, Abrar A.; Fadhil, Dalal Abbas; Al-Bahrani, Mohammed; Salahshour, Soheil; Sabetvand, Rozbeh
Aluminum nanosheets are a form of Al nanoparticle that have been recently manufactured on an industrial scale and have a variety of uses. Al nanoparticles are extensively used in a variety of sectors, including aerospace, construction, medical, chemistry, and marine industries. Crack propagation in various constructions must be investigated thoroughly for structural design purposes. Cracks in nanoparticles may occur during the production of nanosheets (NSs) or when different mechanical or thermal pressures were applied. In this work, the effect of a continuous electric field on the fracture formation process of aluminum nanosheets was investigated. For this study, molecular dynamics simulation and LAMMPS software were used. The effects of various electric fields on several parameters, including as stress, velocity (Velo), and fracture length, were explored, and numerical data were retrieved using software. The results show that the amplitude of the electric field parameter affected the atomic development of modeled Al nanosheets throughout the fracture operation. This effect resulted in atomic resonance (amplitude) fluctuations, which affected the mean interatomic forces and led the temporal evolution of atoms to converge to certain specified initial conditions. The crack length in our modeled samples ranged from 22.88 to 32.63 & Aring;, depending on the electric field parameter (0.1-1 V/& Aring;). Finally, it was determined that the crack growth of modeled Al nanosheets may be controlled using CEF parameters in real-world situations.
Citation Count: 0
Effects of variable electric field on crack growth of aluminum nanoplate: A molecular dynamics approach
(Pergamon-elsevier Science Ltd, 2024) Salahshour, Soheıl; Hammoodi, Karrar A.; Fadhil, Dalal Abbas; Hanoon, Zahraa A.; Nayyef, Dhuha Radhi; Salahshour, Soheil; Emami, Nafiseh
Studying cracks in aluminum (Al) nanosheets is crucial because it enhances our understanding of their mechanical properties and failure mechanisms, which are vital for applications in lightweight structures, electronics, and nanotechnology. In this study, different levels of an external electric field (EF) (1, 2, 3, and 5 V/& Aring;) were used to see how they affected the growth of nanocracks in Al nanoplates. This investigation was carried out utilizing molecular dynamics simulation and LAMMPS software. Increasing EFA to 2 V/& Aring; increased to maximum (Max) stress from 230.567 to 242.032 GPa. Furthermore, increasing the voltage to 5 V/& Aring; reduced Max stress to 230.567 GPa. Max (Vel) occurred in the presence of 2 V/& Aring; which reached 14.2192 & Aring;/ps. The increase in atomic Vel in Al nanoplates can be attributed to enhanced atomic collisions and energy transfer among atoms as the EFA increases to 5 V/& Aring;, the Vel declined to 11.9908 & Aring;/ps. On the other hand, the outputs predicted the atomic evolution of designed Al nanoplates can manipulate the EF value changes. Numerically, by changing the EF parameter from 1 to 5 V/& Aring;, the nano-crack length value varied from 27.87 to 30.16 & Aring;. Physically, this structural evolution occurred through changes in interaction energy (mean attraction energy) within various regions of Al nanoplates. In industrial cases, this nano-crack length manipulation by EF amplitude parameter can be used to prepare atomic nanoplates with different resistances to the crack growth process.