Results 51 to 60 of about 1,172 (212)

Parallel Delaunay triangulation for particle finite element methods [PDF]

Communications in Numerical Methods in Engineering, 2007
AbstractDelaunay triangulation is a geometric problem that is relatively difficult to parallelize. Parallel algorithms are usually characterized by considerable interprocessor communication or important serialized parts. In this paper, we propose a method that achieves high speed‐ups, but needs information regarding locally maximum element ...
Fragakis, Yannis, Oñate, Eugenio
openaire   +2 more sources

Optimization of riveting parameters using Kriging and particle swarm optimization to improve deformation homogeneity in aircraft assembly

Advances in Mechanical Engineering, 2017
Riveting parameters have significant effects on the material growth/material expansion and quality of a joint. However, the inhomogeneity of material growth leads to assembly deformation and degrades the dimensional accuracy of the final products.
Zhongqi Wang, Zhengping Chang, Qun Luo, Shuoguo Hua, Haitao Zhao, Yonggang Kang   +5 more
doaj   +1 more source

Research Progress of Numerical Simulation Methods for Civil Aircraft Ditching

Hangkong gongcheng jinzhan, 2022
Aircraft ditching is an emergency landing scenario that must be considered in aircraft design.Summarizing the research methods for the numerical simulation of ditching can provide the support for ditching analysis of civil aircraft design.The research ...
LUO Wenli, CHEN Shuyong, CHEN Baoxing
doaj   +1 more source

Investigation of Hydrodynamically Dominated Membrane Rupture, Using Smoothed Particle Hydrodynamics–Finite Element Method

Fluids, 2019
The rupturing process of a membrane, located between two fluids at the center of a three-dimensional channel, is numerically investigated. The smoothed particle hydrodynamics (SPH) and the finite element method (FEM) are used, respectively, for modeling ...
Hossein Asadi, Mohammad Taeibi-Rahni, Amir Mahdi Akbarzadeh, Khodayar Javadi, Goodarz Ahmadi   +4 more
doaj   +1 more source

A block particle coupled model and its application to landslides

Theoretical and Applied Mechanics Letters, 2020
: To simulate the progressive failure of slope, a block particle coupled model is introduced. Particle oriented cell mapping (POCM) algorithm is used to enhance the search efficiency, and particle-point, particle-edge, particle-face contact detecting ...
Chun Feng, Shihai Li, Qindong Lin
doaj   +1 more source

PyCompact: An integrated workflow for discrete element method–multi-particle finite element method for powder compaction simulation

SoftwareX
This study introduces an integrated workflow for simulating powder compaction through a hybrid discrete element method (DEM) and multi-particle finite element method (MPFEM) approach. PyCompact, by integrating FreeCAD, LIGGGHTS, ParaView, LS-PrePost, and
Majid Mohammadhosseinzadeh, Hossein Ghorbani-Menghari, Ji Hoon Kim   +2 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

An Improved Particle Finite Element Method for the Simulation of Machining Processes.

, 2021
Machining is one of the most common and versatile manufacturing processes in industry, e.g. automotive industry and aerospace industry. But classical numerical methods such as the Finite Element Method (FEM) have difficulties to simulate it, because the material undergoes large deformations, large strain, large strain rates and high temperatures in ...
Ye, Xialong, Prieto, Juan Manuel Rodríguez, Müller, Ralf   +2 more
openaire   +3 more sources

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source