Results 51 to 60 of about 24,469 (262)

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

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

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

Modeling of ground excavation with the particle finite element method [PDF]

Journal of Engineering Mechanics, 2010
The present work introduces a new application of the Particle Finite Element Method (PFEM) for the modeling of excavation problems. PFEM is presented as a very suitable tool for the treatment of excavation problem. The method gives solution for the analysis of all processes that derive from it.
Carbonell Puigbó, Josep Maria, Oñate Ibáñez de Navarra, Eugenio, Suárez Arroyo, Benjamín   +2 more
openaire   +4 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

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

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

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source