Numerical method

Part 1 of ebook "Creep and hygrothermal effects in concrete structures" provides readers with contents including: Chapter 1 – Introduction how the theory evolved and how it impacts practice; Chapter 2 - Fundamentals of linear viscoelasticity; Chapter 3 - Basic properties of concrete creep, shrinkage, and drying; Chapter 4 - Structural effects of creep and age-adjusted effective modulus method; Chapter 5 - Numerical analysis of creep problems; Chapter 6 - Uncertainty due to parameter randomness via sampling of deterministic solutions;...

451p mothoiphong 28-06-2024 1 1   Download

Part 1 book "Technology computer aided design - Simulation for VLSI MOSFET" includes content: Introduction to technology computer aided design; basic semiconductor and metal oxide semiconductor (MOS) physics; review of numerical methods for technology computer aided design (TCAD), device simulation using ISE-TCAD.

204p dianmotminh03 17-06-2024 0 0   Download

The article employs numerous data collection methods such as observation, questionnaires, interviews... and data analysis methods including statistics in order to generate the current situation of organizing reward systems according to managerial responsibility in iron and steel manufacturing enterprises of Hoa Phat Group, thereby suggesting solutions to perfect the organization of this reward system, contributing to improving business administration efficiency

10p leminhvu111 07-06-2024 2 0   Download

This article presents two methods to determine pressing forces to the M1 copper plate. The first approach employs the upper-bound method, and the second method combines numerical simulation with a central composite design. The upper-bound method uses physical analysis to determine the deformation zone and establish the division of the rigid block model. The findings were identical to the slip-line solution method.

12p viambani 18-06-2024 3 1   Download

presents the following content: Chapter 1 introduction, chapter 2 approximation of a function, chapter 3 numerical calculus, chapter 4 ordinary differential equations, chapter 5 numerical methods for matrices, chapter 6 spectral analysis, chapter 7 partial differential equations, chapter 8 molecular dynamics simulations, chapter 9 modeling continuous systems, chapter 10 monte carlo simulations, chapter 11 genetic algorithm and programming, chapter 12 numerical renormalization.

402p zizaybay1103 29-05-2024 3 2   Download

Ebook "Numerical regularization for atmospheric inverse problems" is to present and analyze numerical algorithms for atmospheric retrieval. The book is aimed at physicists and engineers with some background in numerical linear algebra and matrix computations. Although there are many practical details in this book, for a robust and efficient implementation of all numerical algorithms, the reader should consult the literature cited.

432p giangdongdinh 28-05-2024 2 1   Download

Part 1 of ebook "Numerical methods using MATLAB® (Third edition)" provides readers with contents including: Chapter 1 - An introduction to Matlab®; Chapter 2 - Linear equations and eigensystems; Chapter 3 - Solution of nonlinear equations; Chapter 4 - Differentiation and integration; Chapter 5 - Solution of differential equations;...

289p dongmelo 20-05-2024 2 2   Download

Part 2 of ebook "Numerical methods using MATLAB® (Third edition)" provides readers with contents including: Chapter 6 - Boundary value problems; Chapter 7 - Fitting functions to data; Chapter 8 - Optimization methods; Chapter 9 - Applications of the symbolic toolbox;...

248p dongmelo 20-05-2024 3 2   Download

Part 2 book "Introduction to numerical programming" includes contents: Eigenvalue problems, modeling of tabulated functions, integration of functions, monte carlo method, ordinary differential equations, partial differential equations.

410p dianmotminh01 17-05-2024 6 3   Download

In this study, we propose to build an equivalent 2D model to replace the 3D model of corrugated composite sheets, by the method of homogenization, to study the nonlinear mechanical behavior of corrugated core composite sheets. This model helps to significantly reduce the calculation time as well as the model building time. The model homogeneity is confirmed by comparing the numerical simulation results of the 2D model and the 3D model.

8p dathienlang1012 03-05-2024 1 0   Download

In this work, a shear locking treatment for thin First-order shear deformation theory (FSDT) plates based on the n-node discrete shear gap is introduced to analyze the static behavior of the bending plate. The FSDT is a simple formulation suitable for relatively thick plates, and therefore, when thin plates are considered, the well-known shear locking issue may occur and cause errors in the numerical result.

10p dathienlang1012 03-05-2024 0 0   Download

The objective of the present study is to enhance the hovering efficiency of a UAV helicopter with a spherical fuselage under the effects of the fuselage size (Rf/R) and the distance between the fuselage and rotor (Hm/R), where R is the rotor radius. The RANS method combined with the k-ε turbulent model is used to model the airflow through the helicopter. The numerical model mentioned was well validated by comparing it with the results obtained in the literature.

8p dathienlang1012 03-05-2024 0 0   Download

This paper describes an investigation of fluid flow through two tandem circular cylinders using Lattice-Boltzmann Method in direct numerical simulation. The diameter ratio of two circular cylinders, D1/D2 varies from 0.5 to 1.5, and spacing ratio (L/D2) varies from 1.5 to 10, whereas the Reynolds number of 100 is considered. The numerical model is well validated by comparing the results with those obtained in the literature.

8p dathienlang1012 03-05-2024 2 0   Download

"Numerical modeling of creep concrete beam and slab with boltzmann superposition principle" using this integral method, the creep model for Timoshenko beam and Mindlin plate will be evaluated by the Finite Element Method (FEM) combined Prony's series interpolation through MATLAB program. The creep datas used for Prony's series interpolation are based on international standards. These results obtained by FEM will be compared with available referred results and the results of the analytical method.

9p dathienlang1012 03-05-2024 1 0   Download

In the study "The analysis of ultrasonic transducers using the finite element method", we are focusing on building a finite element model of the ultrasonic transducer in Abaqus. The numerical modeling for dynamical behaviors of the ultrasonic transducer is presented and shown very close to the actual sample value.

7p dathienlang1012 03-05-2024 3 0   Download

The paper "Dynamic response analysis of nanobeams resting on elastic foundations" uses the finite element method to study the dynamic response of nanobeams resting on an elastic foundation, taking into account the flexoelectricity effect. Timoshenko's first-order shear deformation theory is used to derive the formulations of the beam's forced vibration equation. The proposed theory and mechanical model are verified by comparing the numerical results of this work with those of the published data.

8p dathienlang1012 03-05-2024 3 0   Download

In this study, three-dimensional crystal plasticity finite element method (CPFEM) simulations of the nanoindentation test on zinc single crystal have been implemented in the finite element code Abaqus using a user material subroutine. The basics of deformation mechanisms of zinc, nanoindentation test and crystal plasticity theory will be presented.

10p dathienlang1012 03-05-2024 0 0   Download

This paper presents an extension of the Proportional Topology Optimization (PTO) with virtual elements for multi-material problems with mass and cost constraints. In particular, the linear virtual element method (VEM) is constructed on unstructured polygonal meshes. The linear VEM is desirable in the sense that numerical integration is not explicitly required, significantly reducing the computational effort.

24p dianmotminh02 03-05-2024 2 1   Download

This paper presents a new design of Ge20Sb5Se75 large-solid-core- square lattice photonic crystal fiber (PCF) with the first ring of air hole near the core removed. Using the full vector finite element method for anisotropic perfectly matched layers, we numerically examine the dispersion characteristics of the PCF as a function of the wavelength in the mid-infrared range.

10p dianmotminh02 03-05-2024 3 1   Download

In this paper, we use the variable precision method on approximate operators of the FRS model to expand measures to effectively evaluate attributes on noisy datasets. The main contributions of this paper include: Proposing new approximation operations to extend VPFRS to VPOFRS; proposing some measures based on VPOFRS to evaluate the consistency degree of the decision table and the dependence degree of the attribute.

15p dianmotminh02 03-05-2024 2 1   Download