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Application of the mixed formulation method to eliminate shear-locking phenomenon in the Peridynamic Mindlin plate model
Springer Science and Business Media LLC - - Trang 1-16 - 2023
Ruqing Bai, Hakim Naceur, Jinglei Zhao, Jin Yi, Xueping Li, Shujin Yuan, Jun Luo, Liming Wang, Huayan Pu
Accurately predicting crack propagation in structures remains a key challenge within the finite element method (FEM) framework. Despite developing the local method to mitigate the challenges encountered in the FEM, this method is computationally demanding and inadequate for accurately modeling fracture processes in actual structures. Recently, a powerful nonlocal method, Peridynamics (PD), has bee...... hiện toàn bộ
3D modelling of the flow of self-compacting concrete with or without steel fibres. Part II: L-box test and the assessment of fibre reorientation during the flow
Springer Science and Business Media LLC - - 2014
R. Deeb, S. Kulasegaram, B. L. Karihaloo
The three-dimensional Lagrangian particle-based smooth particle hydrodynamics method described in Part I of this two-part paper is used to simulate the flow of self-compacting concrete (SCC) with and without steel fibres in the L-box configuration. As in Part I, the simulation of the SCC mixes without fibres emphasises the distribution of large aggregate particles of different sizes throughout the...... hiện toàn bộ
Mechanism of manual tamping operation for ballast bed based on DEM–MBD coupling
Springer Science and Business Media LLC -
Z. Qian, H. Xiao, Ruoqiang Feng, Zhihai Zhang, Mahantesh M. Nadakatti, Fang Jia
Experimental and numerical studies on dynamic fracturing behavior of roughly jointed rock
Springer Science and Business Media LLC - - Trang 1-20 - 2024
Yatao Yan, Jianchun Li, Daisuke Fukuda, Hongyuan Liu
The surface roughness is an important feature of rock joints. Its effect on the mechanical properties of joints is significant in characterizing dynamic failure of natural rock masses. Both laboratory experiments and numerical simulation analysis were conducted to investigate the dynamic fracturing of roughly jointed granite under various loading rates. The modified split Hopkinson pressure bar ap...... hiện toàn bộ
An explicit/implicit Runge–Kutta-based PFEM model for the simulation of thermally coupled incompressible flows
Springer Science and Business Media LLC - Tập 7 - Trang 57-69 - 2019
Julio Marti, Pavel Ryzhakov
A semi-explicit Lagrangian scheme for the simulation of thermally coupled incompressible flow problems is presented. The model relies on combining an explicit multi-step solver for the momentum equation with an implicit heat equation solver. Computational cost of the model is reduced via application of an efficient strategy adopted for the solution of momentum/continuity system by the authors in t...... hiện toàn bộ
A novel approach to model the flow of generalized Newtonian fluids with the finite pointset method
Springer Science and Business Media LLC - Tập 9 - Trang 585-595 - 2021
Felix R. Saucedo-Zendejo, J. Miguel Nóbrega
Several numerical meshless methods have been proposed to try to solve some of the limitations of traditional mesh-based methods. Among those, the finite pointset method, which has been applied in several physical problems, shows a great potential. This work presents an extension of the available numerical approaches based on the finite pointset method to allow dealing with generalized Newtonian fl...... hiện toàn bộ
Foreword
Springer Science and Business Media LLC - Tập 6 - Trang 1-1 - 2019
Data-driven model order reduction for granular media
Springer Science and Business Media LLC - Tập 9 - Trang 15-28 - 2021
Erik Wallin, Martin Servin
We investigate the use of reduced-order modelling to run discrete element simulations at higher speeds. Taking a data-driven approach, we run many offline simulations in advance and train a model to predict the velocity field from the mass distribution and system control signals. Rapid model inference of particle velocities replaces the intense process of computing contact forces and velocity upda...... hiện toàn bộ
A multiscale DEM–FEM coupled approach for the investigation of granules as crash-absorber in ship building
Springer Science and Business Media LLC - - 2022
Mohsin Ali Chaudry, Christian Woitzik, Alexander Düster, Peter Wriggers
AbstractThis paper covers a numerical analysis of a novel approach to increasing the crashworthiness of double hull ships. As proposed in Schöttelndreyer (Füllstoffe in der Konstruktion: ein Konzept zur Verstärkung vonSchiffsseitenhüllen, Technische Uni-versitt Hamburg, Hamburg, 2015), it involves the usage of granular materials in the cavity of the double hull shi...... hiện toàn bộ
Computational assessment of immersed boundary–lattice Boltzmann method for complex moving boundary problems
Springer Science and Business Media LLC - Tập 10 - Trang 155-172 - 2022
Sambit Majumder, Arnab Ghosh, Dipankar Narayan Basu, Ganesh Natarajan
In the present work, we investigate the accuracy and robustness of our in-house OpenMP parallelized direct-forcing immersed boundary–lattice Boltzmann (DF-IB-LB) solver by undertaking studies on accuracy, discrete conservation, Galilean invariance and quantification of spurious force oscillations (SFO). Our study reveals that DF-IB-LB exhibits first and second-order spatial accuracy for velocity a...... hiện toàn bộ
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