Results 151 to 160 of about 579,530 (193)
All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security
Advanced Materials, EarlyView.An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak +4 more
wiley +1 more source
Actuation of Cell Layers in Three Dimensions
Advanced Materials, EarlyView.ABSTRACT The alignment of fibers and cells in living tissues affect their mechanical properties and functionality. In this context, one can draw an analogy between tissues and nematic liquid crystal elastomers. We explore this analogy by growing fibroblasts on 2D‐patterned substrates and observing the contraction of cell sheets upon detachment from the
Kirsten Endresen +6 more
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Extended Finite Element Method
International Journal for Numerical Methods in Engineering, 2011It is amazing to see the progress, which has been made over the last two decades, in investigating and developing numerical methods beyond the classical finite element method. The Extended Finite Element Method (XFEM) and related methods are some of the major outcomes of this time. The name ‘XFEM’ has been coined about 10 years ago.
Thomas‐Peter Fries +2 more
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hp‐adaptive extended finite element method
International Journal for Numerical Methods in Engineering, 2011SUMMARYThis paper discusses higher‐order extended finite element methods (XFEMs) obtained from the combination of the standard XFEM with higher‐order FEMs. Here, the focus is on the embedding of the latter into the partition of unity method, which is the basis of the XFEM.
Byfut, Andreas, Schröder, Andreas
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An extended finite element method for coupled Darcy–Stokes problems
International Journal for Numerical Methods in Engineering, 2022AbstractIn this article, we propose an extended finite element method to deal with coupled Darcy–Stokes problems with straight or curved interfaces. A mixed approximate form is presented based on Brezzi‐Douglas‐Marini finite element space and piecewise constant function space for Darcy equations, and a mixed approximate form is shown based on piecewise
Pei Cao, Jinru Chen
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Extended finite element method for quasi‐brittle fracture
International Journal for Numerical Methods in Engineering, 2003AbstractA methodology for the simulation of quasi‐static cohesive crack propagation in quasi‐brittle materials is presented. In the framework of the recently proposed extended finite element method, the partition of unity property of nodal shape functions has been exploited to introduce a higher‐order displacement discontinuity in a standard finite ...
MARIANI, STEFANO, PEREGO, UMBERTO
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Numerical aspects of the eXtended Finite Element Method
PAMM, 2005AbstractThe eXtended Finite Element Method (XFEM) is a very efficient way to reduce mesh dependencies when analysing crack growth. Displacements and stresses around the crack tip are calculated using additional shape functions which span the analytical displacement field around a crack tip.In this paper the following numerical aspects of the XFEM are ...
Markus Peters, Klaus Hackl
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Extending the Particle Finite Element Method for sediment transport simulation
Computer Methods in Applied Mechanics and Engineering, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nicolás Galano +2 more
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The Extended Finite Element Method
2014This chapter discusses level-set topology optimization methods where the governing state equations are discretized by the Extended Finite Element Method (XFEM). In contrast to conventional methods that map the level-set function into a density distribution of a fictitious material, the XFEM allow preserving the crisp geometry information of level-sets ...
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Efficient Implementation of Extended Finite Element Method
Volume 2: 32nd Computers and Information in Engineering Conference, Parts A and B, 2012Extended finite element method (or XFEM) locally enriches the finite element solution using a priori known analytical solution. XFEM has been used extensively in fracture mechanics to compute stress concentration at crack tips. It is a mesh independent method that allows crack to be represented as an equation instead of using the mesh to approximate it.
Vishal Hotwani, Ashok V. Kumar
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