Results 71 to 80 of about 1,327,218 (340)

Microstructural Evolution and Mechanical Properties of a Medium‐Manganese Steel Manufactured by Laser‐Based Powder Bed Fusion of Metals

Advanced Engineering Materials, EarlyView.
Fe–12Mn–0.2C medium‐manganese steel is processed by laser‐based powder bed fusion of metals using blended as well as pre‐alloyed powder. Various scanning speeds are used to determine the influence of energy deposition rate on microstructure and mechanical properties.
Leoni Hübner, Bugra Köksal, Thomas Wegener, Christian Haase, Thomas Niendorf   +4 more
wiley   +1 more source

(Nb,Ti)(C,N)‐Precipitates in High‐Strength Low‐Alloyed Steels—Modeling, Characterization and Validation

Advanced Engineering Materials, EarlyView.
Steel samples are investigated using complementary simulations and measurements. Transmission electron microscopy in bright‐field mode, combined with energy‐dispersive X‐ray spectroscopy maps for titanium and niobium, reveals distinct particle populations. Simulations reproduce these in size and composition.
Marc Laub, Christian Motz, Eric Detemple, Sebastian Scholl   +3 more
wiley   +1 more source

Adaptive finite element methods

Acta Numerica
This is a survey of the theory of adaptive finite element methods (AFEMs), which are fundamental to modern computational science and engineering but whose mathematical assessment is a formidable challenge. We present a self-contained and up-to-date discussion of AFEMs for linear second-order elliptic PDEs and dimension d > 1, with emphasis on ...
Bonito, Andrea, Canuto, Claudio, Nochetto, Ricardo H., Veeser, Andreas   +3 more
openaire   +2 more sources

A convergent nonconforming finite element method for compressible Stokes flow [PDF]

, 2009
We propose a nonconforming finite element method for isentropic viscous gas flow in situations where convective effects may be neglected. We approximate the continuity equation by a piecewise constant discontinuous Galerkin method. The velocity (momentum)
Karlsen, Kenneth H., Karper, Trygve K.
core   +1 more source

Adaptive Finite Element Method for Simulation of Optical Nano Structures

, 2007
We discuss realization, properties and performance of the adaptive finite element approach to the design of nano-photonic components. Central issues are the construction of vectorial finite elements and the embedding of bounded components into the ...
Becker, Burger, Bérenger, Couny, Cregan, Holzlöhner, Linden, Monk, Nedelec, Pomplun, Pomplun, Russell, Schmidt, Zschiedrich, Zschiedrich, Zschiedrich   +15 more
core   +2 more sources

Microscale 3D Printed Pillars and Porous Polymeric Structures: Manufacturability and Micromechanics

Advanced Engineering Materials, EarlyView.
This work demonstrates how two‐photon polymerization enables the fabrication of microscale solid and porous structures from IP‐Q, IP‐S, and IP‐PDMS resins. Combining morphological and mechanical characterization, the study provides the first systematic insights into IP‐Q mechanics and reveals how processing parameters affect structure and stiffness ...
Aikaterini Isaakidou, Mahya Ganjian, Vahid Moosabeiki, Marius Alexander Leeflang, Mahdiyeh Nouri Goushki, Pouyan Esmailzadeh Boukany, Maria Wątroba, Alexander Groetsch, Jakob Schwiedrzik, Mohammad Javad Mirzaali, Iulian Apachitei, Lidy Elena Fratila‐Apachitei, Amir Abbas Zadpoor   +12 more
wiley   +1 more source

A finite element method for extended KdV equations

International Journal of Applied Mathematics and Computer Science, 2016
The finite element method (FEM) is applied to obtain numerical solutions to a recently derived nonlinear equation for the shallow water wave problem. A weak formulation and the Petrov–Galerkin method are used.
Karczewska Anna, Rozmej Piotr, Szczeciński Maciej, Boguniewicz Bartosz   +3 more
doaj   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

MODELING OF TWO-PHASE FLUID FILTRATION FINITE ELEMENT METHOD

Вестник Северо-Кавказского федерального университета, 2022
The problem of oil production by means of non-piston water displacement is considered. The numerical model for twophase incompressible fluid filtration is designed.
Lusine Arsenovna Grigoryan
doaj  

Time Domain Finite Element Method for Maxwell’s Equations

IEEE Access, 2019
In this paper, we discuss a time domain finite element method for the approximate solution of Maxwell's equations. A weak formulation is derived for the electric and magnetic fields with appropriate initial and boundary conditions, and the problem is ...
Asad Anees, Lutz Angermann
doaj   +1 more source