Article
Engineering, Civil
Xuesong Chu, Liang Li, Guangming Yu, Changfeng Yuan
Summary: The method using SPH and MCS enhances the quantification of failure areas and the assessment of slope stability risks. AFPM tends to overestimate the failed soil mass area, while the minimum FS slip surface method underestimates it.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2022)
Article
Engineering, Geological
Zhao Lu, Zhuang Jin, Panagiotis Kotronis
Summary: Geological disasters can cause significant loss of life and property. Therefore, it is important to study their evolution process for risk assessment and mitigation. This study adopts the SIMSAND-SPH approach to investigate slope failure under large deformations. The results show that the SIMSAND-SPH approach is efficient and accurate, making it a viable numerical tool for simulating real scale granular flow.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Wen-Jie Xu, Xue-Yang Dong
Summary: In this study, a coupled SPH-DEM method was developed to simulate landslide tsunamis, and it was found that different types of slides significantly affect the characteristics of the tsunamis. Granular slides generate lower initial tsunami speeds and amplitudes compared to blocky slides, with blocky slides composed of four blocks producing the highest tsunami speed and amplitude.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Physics, Fluids & Plasmas
Jon Martinez-Carrascal, J. Calderon-Sanchez, L. M. Gonzalez-Gutierrez, A. de Andrea Gonzalez
Summary: This article extends the classical Rayleigh-Taylor instability to situations where the fluid is completely confined, analyzing the effect of adding surface tension to the interface in a 2D viscous periodic case. The study compares the linear stability analysis obtained through Navier-Stokes equations and WCSPH method, showing remarkable agreement in simulations with different tank sizes and Atwood numbers.
Article
Mechanics
H. R. Abbasi, R. Lubbad
Summary: A three-dimensional numerical model based on the SPH method has been developed and successfully validated for simulating interactions between oil and sea ice. The model accurately predicts the interaction between oil slicks and ice floes, and investigates the effects of various factors on oil slick accumulation.
Article
Engineering, Multidisciplinary
P. Rastelli, R. Vacondio, J. C. Marongiu
Summary: This work proposes an ALE-SPH scheme with an IIPS correction to optimize the particle distribution and improve the accuracy of SPH spatial operators. Two different approaches based on MLS and convective fluxes are adopted to embed the IIPS formulation in the ALE-SPH scheme. The proposed numerical scheme achieves a second-order convergence rate for the Taylor-Green flow at Re = 100 and shows significantly improved accuracy compared to existing quasi-Lagrangian ALE-SPH schemes in the Moving box and Impinging jet test cases.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Automation & Control Systems
Yujendra Mitikiri, Matthew Silic, Kamran Mohseni
Summary: This article analyzes the relationship between parameters in the equations of motion and the properties of a swarm of robots, introducing a new interaction potential to control robot-robot separation and maintain swarm cohesion. The constructed interaction potential is conservative and can establish overall swarm stability through passivity arguments in the presence of a dissipative process. The proposed controller's features are verified through simulations and experiments using real physical airplanes.
IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS
(2021)
Article
Mechanics
Tibing Xu, Yee-Chung Jin, Yih-Chin Tai
Summary: A coupled model of Peridynamics into the mesh-free method was used to simulate the impacting collapse of a granular column with various suspended heights. The simulated free surface profiles were in good agreement with experimental measurements, and the numerical model was validated by simulating the granular column collapse and comparing the kinetic energy and potential energy with DEM simulation results. The analysis revealed that the suspended height in the impacting collapse of the granular column significantly affects energy dissipation.
Review
Environmental Sciences
Kennedy C. Onyelowe, Farid Fazel Mojtahedi, Ali Golaghaei Darzi, Denise-Penelope N. Kontoni
Summary: This article extensively reviews coupled fluid-solid phase continuum problems associated with large deformation encountered by geotechnics experts in slope stability problems. The most efficient numerical approach to solving these problems for the sake of the environment is explored. Limit equilibrium methods (LEM) provided celebrated mathematical solutions in the past, but numerical solutions were born to overcome their limitations in handling more complex slope failure problems. The mesh-based numerical solutions suffered from distortions, leading to the development of the mesh-free smoothed particle hydrodynamics (SPH) approach which has been proposed as an efficient method for solving large deformation environmental geotechnics problems.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Mathematics, Interdisciplinary Applications
Afang Jin, Shuzhi Zhang, Zhenguo An, Hao Peng
Summary: In this paper, the meshless method (SPH) is used to simulate the movement of snow drift with complex particle size, and the feasibility of this method is verified by analyzing the simulation results.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
Article
Engineering, Mechanical
Ken Wen, Xiao-Wei Chen
Summary: This paper presents the failure evolution during HVI of Al spheres onto thin Al plates using the SPH method, analyzing the relationship between failure evolution and debris cloud formation and discussing the impact of impact conditions on failure evolution and debris cloud formation. The analysis provides new insights for the quantitative study of HVI and space debris protection.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Physics, Nuclear
Peter Diener, Stephan Rosswog, Francesco Torsello
Summary: This study presents the first neutron star merger simulations using the newly developed code SPHINCS_BSSN. The code evolves spacetime using the BSSN formulation and matter using the Smooth Particle Hydrodynamics (SPH) method. Several new methodological elements were introduced to model neutron star mergers, including spacetime-mesh refinement, changes in the particle-mesh mapping algorithm, and a novel way to construct SPH initial data using the Artificial Pressure Method.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Computer Science, Interdisciplinary Applications
M. Antuono, P. N. Sun, S. Marrone, A. Colagrossi
Summary: The behaviour of a weakly-compressible SPH scheme obtained by rewriting the Navier-Stokes equations in an arbitrary Lagrangian-Eulerian (ALE) format is studied. The proposed model is expressed in terms of primitive variables (density and velocity) and is written using the standard differential formulations of weakly-compressible SPH schemes. The scheme can be stabilized by including appropriate diffusion terms in both the equations of density and mass.
COMPUTERS & FLUIDS
(2021)
Article
Nanoscience & Nanotechnology
Tao Zhang, Tieshuan Zhuang, Chao Gao, Xiangwei Dong
Summary: This study developed a multi-media coupled model to simulate the interaction between underwater explosion and discrete objects. The numerical stability was improved by adding artificial viscous term and density dissipation term. The results showed that the discrete objects affected the propagation and diffusion of shock waves and enhanced the damage effect on the structure.
Article
Engineering, Multidisciplinary
Md Rushdie Ibne Islam, Kona Veera Ganesh, Puneet Kumar Patra
Summary: Significant advances in nanoscale research have enabled the continued miniaturization of devices. This study aims to investigate the equivalence between continuum scale methods and atomistic scale molecular dynamics (MD) simulations. Through four simple problems, the results demonstrate that under certain conditions, the continuum scale methods provide qualitatively and quantitatively consistent results with MD simulations.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)