Results 111 to 120 of about 9,695 (338)
Semi-analytical solutions of the nonlinear oscillator with a matrix Lagrange multiplier
Journal of Low Frequency Noise, Vibration and Active Control, 2019 In this paper, a semi-analytical method based on variational iteration formulae is proposed. Second-order nonlinear oscillator equations are numerically investigated by this method. A matrix Lagrange multiplier is given to derive analytical solutions and
Hua Cheng, Yong-Yan Yu
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The finite element method with Lagrange multipliers for domains with corners [PDF]
Mathematics of Computation, 1981 We study the convergence of the finite element method with Lagrange multipliers for approximately solving the Dirichlet problem for a second-order elliptic equation in a plane domain with piecewise smooth boundary. Assuming mesh refinements around the corners, we construct families of boundary subspaces that are compatible with triangular Lagrange ...
openaire +2 more sources
Three-dimensional contact analysis of coupled surfaces by a novel contact transformation method based on localized Lagrange multipliers [PDF]
, 2016 Yi-Tsung Lin, James S. Wu, Yuan-Lung Lai
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, 2009 In this work we consider a stabilized Lagrange multiplier method in order to approximate the Coulomb frictional contact model in linear elastostatics. The particularity of the method is that no discrete inf-sup condition is needed. We study the existence
V. Lleras
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Multi‐supported non‐structural components (NSCs) are prone to seismic damage, yet their response prediction remains challenging when support motions are spatially incoherent. This study proposes an enhanced quasi‐static condensation (EQSC) method for linear, lightweight, dynamically detuned multi‐supported NSCs under the neglect of primary ...
Duozhi Wang +5 more
wiley +1 more source
International Journal for Numerical Methods in Fluids, EarlyView.This work aims to develop a generalised and efficient semi‐analytical method that combines the Laplace decomposition method with Pade approximation (LDMPA) to solve multidimensional nonlinear integro‐partial differential equation. For a one‐dimension case, explicit (closed‐form) solutions for the number density functions are derived for the first time.
Somveer Keshav +4 more
wiley +1 more source
Ultimate bearing capacity of foundations based on variational limit equilibrium method
Yantu gongcheng xuebaoBased on the basic principles of the variational method and the limit equilibrium method, the ultimate bearing capacity of foundation for strip footings is analyzed.
ZHOU Zhixiong, ZHOU Fengxi, LIANG Yuwang
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Analytical optimization of photovoltaic output with Lagrange Multiplier Method
, 2019 This paper proposes a non-iterative and direct optimization method for the optimization of the output characteristics of single and double diode of cell model, including series and shunt resistances.
Al-Dahidi S. +4 more
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Multicontinuum Homogenization for Poroelasticity Model
International Journal for Numerical Methods in Fluids, EarlyView.This work derives a generalized multicontinuum poroelasticity model using the multicontinuum homogenization method to enable accurate coarse‐grid simulations of coupled flow–mechanics processes in highly heterogeneous porous media. Coupled constraint cell problems are formulated, and the corresponding multicontinuum equations are rigorously derived ...
Dmitry Ammosov +2 more
wiley +1 more source
Novel Approach for Dealing with Partial Differential Equations with Mixed Derivatives
Abstract and Applied Analysis, 2014 We propose a powerful iteration scheme for solving analytically a class of partial equations with mixed derivatives. Our approach is based upon the Lagrange multiplier in two-dimensional spaces. The local convergence and uniqueness of the proposed method
Abdon Atangana +1 more
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