Results 41 to 50 of about 127,128 (302)

Parallelization of an object-oriented FEM dynamics code: influence of the strategies on the Speedup [PDF]

, 2005
This paper presents an implementation in C++ of an explicit parallel finite element code dedicated to the simulation of impacts. We first present a brief overview of the kinematics and the explicit integration scheme with details concerning some ...
Pantalé, Olivier
core   +1 more source

Implicit or explicit time integration schemes in the PFEM modeling of metal cutting processes

, 2022
This work presents the development of an explicit/implicit particle finite element method (PFEM) for the 2D modeling of metal cutting processes. The purpose is to study the efficiency of implicit and explicit time integration schemes in terms of ...
Larsson, Simon,, Carbonell, J. M.,, Carbonell, Josep María, Jonsén, Pär, Rodriguez, Juana María, Rodriguez, J. M., Carbonell, J. M., Larsson, Simon, Rodriguez, J. M.,, Larsson, Susanna, Jonsén, Pär,   +10 more
core   +1 more source

A conservative multirate explicit time integration method for computation of compressible flows [PDF]

, 2021
In the context of high fidelity simulation of compressible flows (LES and DNS) at extreme scale (small time steps) on massively parallel supercomputers, explicit time integration methods are widely used since they both have a good computational cost ...
Messahel, Ramzi, Bodart, Julien, Grondin, Gilles, Gressier, Jérémie   +3 more
core   +1 more source

An Improved Multi-Frame Coherent Integration Algorithm for Heterogeneous Radar

Remote Sensing, 2023
This paper proposes an improved multi-frame coherent integration algorithm to improve the detection performance of weak targets in heterogeneous radar.
Yiheng Liu, Hua Zhang, Xuemei Wang, Qinghai Dong, Xiaode Lyu   +4 more
doaj   +1 more source

Explicit Verlet time-integration for a Nitsche-based approximation of elastodynamic contact problems

Advanced Modeling and Simulation in Engineering Sciences, 2018
The aim of the present paper is to study theoretically and numerically the Verlet scheme for the explicit time-integration of elastodynamic problems with a contact condition approximated by Nitsche’s method. This is a continuation of papers (Chouly et al.
Franz Chouly, Yves Renard
doaj   +1 more source

One-Parameter Controlled Non-Dissipative Unconditionally Stable Explicit Structure-Dependent Integration Methods with No Overshoot

Applied Sciences, 2021
Although many families of integration methods have been successfully developed with desired numerical properties, such as second order accuracy, unconditional stability and numerical dissipation, they are generally implicit methods.
Veerarajan Selvakumar, Shuenn-Yih Chang
doaj   +1 more source

Explicit complex time integrators for stiff problems

CoRR
Most numerical methods for time integration use real-valued time steps. Complex time steps, however, can provide an additional degree of freedom, as we can select the magnitude of the time step in both the real and imaginary directions. We show that specific paths in the complex time plane lead to expanded stability regions, providing clear ...
Jithin D. George, Julian Koellermeier, Samuel Y. Jung, Niall M. Mangan   +3 more
openaire   +2 more sources

New Analytical Results and Comparison of 14 Numerical Schemes for the Diffusion Equation with Space-Dependent Diffusion Coefficient

Mathematics, 2022
We examine the one-dimensional transient diffusion equation with a space-dependent diffusion coefficient. Such equations can be derived from the Fokker–Planck equation and are essential for understanding the diffusion mechanisms, e.g., in carbon ...
Mahmoud Saleh, Endre Kovács, Imre Ferenc Barna, László Mátyás   +3 more
doaj   +1 more source

Distorted time window for sensorimotor integration and preserved time window for sense of agency in patients with post-stroke limb apraxia

Frontiers in Human Neuroscience
Limb apraxia is a cognitive-motor disorder typically resulting from left hemisphere stroke, characterized by an inability to perform skilled limb movements despite intact motor and sensory functions. Previous studies suggest that individuals with apraxia
Satoshi Nobusako, Satoshi Nobusako, Rintaro Ishibashi, Takaki Maeda, Sotaro Shimada, Shu Morioka, Shu Morioka   +6 more
doaj   +1 more source

Consistency and Convergence Properties of 20 Recent and Old Numerical Schemes for the Diffusion Equation

Algorithms, 2022
We collected 20 explicit and stable numerical algorithms for the one-dimensional transient diffusion equation and analytically examined their consistency and convergence properties.
Ádám Nagy, János Majár, Endre Kovács   +2 more
doaj   +1 more source