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View article: Contact.engineering—Create, analyze and publish digital surface twins from topography measurements across many scales
Contact.engineering—Create, analyze and publish digital surface twins from topography measurements across many scales Open
The optimization of surface finish to improve performance, such as adhesion, friction, wear, fatigue life, or interfacial transport, occurs largely through trial and error, despite significant advancements in the relevant science. There ar…
View article: Non-convex, ringing-free, FFT-accelerated solver using an incremental approximate energy functional
Non-convex, ringing-free, FFT-accelerated solver using an incremental approximate energy functional Open
Fourier-accelerated micromechanical homogenization has been developed and applied to a variety of problems, despite being prone to ringing artifacts. In addition, the majority of Fourier-accelerated solvers applied to FFT-accelerated schem…
View article: contact.engineering -- Create, analyze and publish digital surface twins\n from topography measurements across many scales
contact.engineering -- Create, analyze and publish digital surface twins\n from topography measurements across many scales Open
The optimization of surface finish to improve performance occurs largely\nthrough trial and error, despite significant advancements in the relevant\nscience. There are three central challenges that account for this disconnect:\n(1) the cha…
View article: Optimal FFT-accelerated Finite Element Solver for Homogenization
Optimal FFT-accelerated Finite Element Solver for Homogenization Open
We propose a matrix-free finite element (FE) homogenization scheme that is considerably more efficient than generic FE implementations. The efficiency of our scheme follows from a preconditioned well-scaled reformulation allowing for the u…
View article: Elimination of ringing artifacts by finite-element projection in FFT-based homogenization
Elimination of ringing artifacts by finite-element projection in FFT-based homogenization Open
Micromechanical homogenization is often carried out with Fourier-accelerated methods that are prone to ringing artifacts. We here generalize the compatibility projection introduced by Vond.rejc et al. (2014) [24] beyond the Fourier basis. …
View article: Efficient implementation of atom-density representations
Efficient implementation of atom-density representations Open
Physically motivated and mathematically robust atom-centered representations of molecular structures are key to the success of modern atomistic machine learning. They lie at the foundation of a wide range of methods to predict the properti…
View article: Efficient topology optimization using compatibility projection in micromechanical homogenization
Efficient topology optimization using compatibility projection in micromechanical homogenization Open
The adjoint method allows efficient calculation of the gradient with respect to the design variables of a topology optimization problem. This method is almost exclusively used in combination with traditional Finite-Element-Analysis, wherea…
View article: Efficient topology optimization using compatibility projection in\n micromechanical homogenization
Efficient topology optimization using compatibility projection in\n micromechanical homogenization Open
The adjoint method allows efficient calculation of the gradient with respect\nto the design variables of a topology optimization problem. This method is\nalmost exclusively used in combination with traditional\nFinite-Element-Analysis, whe…
View article: The emergence of small-scale self-affine surface roughness from deformation
The emergence of small-scale self-affine surface roughness from deformation Open
When solids are deformed plastically, they develop surface roughness because plastic flow is not laminar at small scales.
View article: Atomistic-continuum coupling of random alloys
Atomistic-continuum coupling of random alloys Open
Random alloys are multicomponent systems where the atomic type on each lattice site is independent of the atom types on any other lattice site. The fluctuations in local atomic configurations inherent to the random alloy prevents the accur…
View article: Coupled Atomistics and Discrete Dislocations in 3d (CADD-3d)
Coupled Atomistics and Discrete Dislocations in 3d (CADD-3d) Open
Capturing plasticity at realistic dislocation densities with high configurational complexity requires a continuum-leveldiscrete dislocation dynamics (DDD) description. However, many features controlling dislocation motion areinherently ato…
View article: Erratum: Neural network potential for Al-Mg-Si alloys [Phys. Rev. Materials <b>1</b>, 053604 (2017)]
Erratum: Neural network potential for Al-Mg-Si alloys [Phys. Rev. Materials <b>1</b>, 053604 (2017)] Open
Received 13 November 2017DOI:https://doi.org/10.1103/PhysRevMaterials.1.069901©2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasDefectsPlasticityPhysical SystemsAlloysFace-centered cubicSolid solutionsTechniquesM…
View article: Neural network potential for Al-Mg-Si alloys
Neural network potential for Al-Mg-Si alloys Open
The 6000 series Al alloys, which include a few percent of Mg and Si, are important in automotive and aviation industries because of their low weight, as compared to steels, and the fact their strength can be greatly improved through engine…
View article: Quantitative characterization of surface topography using spectral analysis
Quantitative characterization of surface topography using spectral analysis Open
Roughness determines many functional properties of surfaces, such as\nadhesion, friction, and (thermal and electrical) contact conductance. Recent\nanalytical models and simulations enable quantitative prediction of these\nproperties from …