Results 81 to 90 of about 1,784,243 (270)

Improved Convergence Analysis of Gauss-Newton-Secant Method for Solving Nonlinear Least Squares Problems

open access: yesMathematics, 2019
We study an iterative differential-difference method for solving nonlinear least squares problems, which uses, instead of the Jacobian, the sum of derivative of differentiable parts of operator and divided difference of nondifferentiable parts. Moreover,
Ioannis Argyros   +2 more
doaj   +1 more source

A generalization of order convergence

open access: yes, 2019
Let $E$ be a sublattice of a vector lattice $F$. $\left( x_ \right)\subseteq E$ is said to be $ F $-order convergent to a vector $ x $ (in symbols $ x_ \xrightarrow{Fo} x $), whenever there exists another net $ \left(y_ \right) $ in $F $ with the some index set satisfying $ y_ \downarrow 0 $ in $F$ and $ | x_ - x | \leq y_ $ for all indexes $ $.
openaire   +2 more sources

Two-Scale Convergence of First-Order Operators

open access: yesZeitschrift für Analysis und ihre Anwendungen, 2007
Nguetseng's notion of it two-scale convergence and some of its main properties are first shortly reviewed. The (weak) two-scale limit of the gradient of bounded sequences of W^{1,p}(\mathbb R^N) is then ...
openaire   +3 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

On Generalized Statistical Convergence of Order of Difference Sequences

open access: yesJournal of Function Spaces and Applications, 2013
We introduce the concept of statistical convergence of order of difference sequences, and we give some relations between the set of statistical convergence of order of difference sequences and strong -summability of order .
Mikail Et   +2 more
doaj   +1 more source

A New Class of Iterative Processes for Solving Nonlinear Systems by Using One Divided Differences Operator

open access: yesMathematics, 2019
In this manuscript, a new family of Jacobian-free iterative methods for solving nonlinear systems is presented. The fourth-order convergence for all the elements of the class is established, proving, in addition, that one element of this family has order
Alicia Cordero   +3 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Eigenvalue homogenization for quasilinear elliptic equations with various boundary conditions

open access: yesElectronic Journal of Differential Equations, 2016
We study the rate of convergence for (variational) eigenvalues of several non-linear problems involving oscillating weights and subject to several types of boundary conditions in bounded domains.
Julian Fernandez Bonder   +2 more
doaj  

Higher-Order Iteration Schemes for Solving Nonlinear Systems of Equations

open access: yesMathematics, 2019
We present a three-step family of iterative methods to solve systems of nonlinear equations. This family is a generalization of the well-known fourth-order King’s family to the multidimensional case.
Hessah Faihan Alqahtani   +2 more
doaj   +1 more source

A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline   +2 more
wiley   +1 more source

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