Results 31 to 40 of about 19,277,069 (274)

Identification in multiscale thermoelastic problems

Computer Assisted Methods in Engineering and Science, 2017
The paper deals with the identification in multiscale analysis of structures under thermal and mechanical loads. A two-scale model of porous materials is examined. Direct thermoelastic analyses with representative volume element (RVE) and finite element
Adam Długosz, Tadeusz Burczyński
doaj   +1 more source

An efficient parameterized neural network enhanced multiscale finite element modeling for triply periodic minimal surface meta-structures and its applications for femur

Journal of Materials Research and Technology
Triply periodic minimal surface (TPMS) multiscale structures are meta-structures known for their low-weight-high-strength property. Because of their delicate geometry and sheet-networks feature, a fine mesh is required for finite element analysis, which ...
Yan-Zhen Chen, Chu-Hao Wang, Tsung-Yeh Hsieh, Cheng-Che Tung, Po-Yu Chen, Tsung-Hui Huang   +5 more
doaj   +1 more source

A Combined Numerical–Analytical Study for Notched Fatigue Crack Initiation Assessment in TRIP Steel: A Local Strain and a Fracture Mechanics Approach

Metals, 2023
In the fatigue design of metallic components using the safe-life approach, fatigue crack initiation as a development of slip systems at the nanoscale, followed by microstructurally short crack growth, is critical for the onset of structural failure.
Peter I. Christodoulou, Alexis T. Kermanidis   +1 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

Blood Flow Simulation in Bifurcating Arteries: A Multiscale Approach After Fenestrated and Branched Endovascular Aneurysm Repair

Mathematics
Pathophysiological conditions in arteries, such as stenosis or aneurysms, have a great impact on blood flow dynamics enforcing the numerical study of such pathologies.
Spyridon Katsoudas, Stavros Malatos, Anastasios Raptis, Miltiadis Matsagkas, Athanasios Giannoukas, Michalis Xenos   +5 more
doaj   +1 more source

Time-domain asymptotic homogenization for linear-viscoelastic composites: mathematical formulae and finite element implementation

Composites Part C: Open Access, 2022
Asymptotic homogenization (AH) is a rigorous method used for modeling multiscale mechanical behavior in periodic composites. Unlike conventional AH methods, which predict the effective viscoelasticity using the elastic–viscoelastic correspondence ...
Hongzhou Zhai, Tengfei Bai, Qi Wu, Nobuhiro Yoshikawa, Ke Xiong, Changhao Chen   +5 more
doaj   +1 more source

Multiscale finite-volume method for density-driven flow in porous media [PDF]

Computational Geosciences, 2008
The multiscale finite-volume (MSFV) method has been developed to solve multiphase flow problems on large and highly heterogeneous domains efficiently. It employs an auxiliary coarse grid, together with its dual, to define and solve a coarse-scale pressure problem. A set of basis functions, which are local solutions on dual cells, is used to interpolate
Lunati, Ivan, Jenny, Patrick
openaire   +4 more sources

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

Consistent local projection stabilized finite element methods [PDF]

, 2010
This work establishes a formal derivation of local projection stabilized methods as a result of an enriched Petrov-Galerkin strategy for the Stokes problem.
Barrenechea, Gabriel, Valentin, Frédéric   +1 more
core   +4 more sources

Data-driven Bayesian model-based prediction of fatigue crack nucleation in Ni-based superalloys

npj Computational Materials, 2022
This paper develops a Bayesian inference-based probabilistic crack nucleation model for the Ni-based superalloy René 88DT under fatigue loading. A data-driven, machine learning approach is developed, identifying underlying mechanisms driving crack ...
Maxwell Pinz, George Weber, Jean Charles Stinville, Tresa Pollock, Somnath Ghosh   +4 more
doaj   +1 more source