A meshless local Petrov-Galerkin (MLPG) method for free and forced vibration analyses for solids
YuanTong Gu,Gui-Rong Liu +1 more
TLDR
The meshless local Petrov-Galerkin (MLPG) method is an effective truly meshless method for solving partial differential equations using moving least squares (MLS) interpolants and local weak forms.Abstract:
The meshless local Petrov-Galerkin (MLPG) method is an effective truly meshless method for solving partial differential equations using moving least squares (MLS) interpolants and local weak forms. In this paper, a MLPG formulation is proposed for free and forced vibration analyses. Local weak forms are developed using weighted residual method locally from the dynamic partial differential equation. In the free vibration analysis, the essential boundary conditions are implemented through the direct interpolation form and imposed using orthogonal transformation techniques. In the forced vibration analysis, the penalty method is used in implementation essential boundary conditions. Two different time integration methods are used and compared in the forced vibration analyses using the present MLPG method. The validity and efficiency of the present MLPG method are demonstrated through a number of examples of two-dimensional solids.read more
Citations
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A local radial point interpolation method (lrpim) for free vibration analyses of 2-d solids
Gui-Rong Liu,YuanTong Gu +1 more
TL;DR: In this article, a local radial point interpolation method (LRPIM) is presented to deal with boundary value problems for free vibration analyses of two-dimensional solids, where local weak forms are developed using weighted residual method locally from the partial differential equation of free vibration.
Journal ArticleDOI
Static and dynamic deformations of thick functionally graded elastic plates by using higher-order shear and normal deformable plate theory and meshless local Petrov -Galerkin method
TL;DR: In this paper, the authors used a higher-order shear and normal deformable plate theory (HOSNDPT) and a meshless local Petrov-Galerkin (MLPG) method to analyze static deformations and free and forced vibrations of a thick rectangular functionally graded elastic plate.
Journal ArticleDOI
Numerical simulation of two-dimensional sine-Gordon solitons via a local weak meshless technique based on the radial point interpolation method (RPIM)
Mehdi Dehghan,Arezou Ghesmati +1 more
TL;DR: The meshless local radial point interpolation method (LRPIM) is adopted to simulate the two-dimensional nonlinear sine-Gordon (S-G) equation and a simple predictor–corrector scheme is performed to eliminate the nonlinearity.
Journal ArticleDOI
Meshfree methods and their comparisons
TL;DR: In this paper, several typical meshfree methods are introduced and compared with each others in terms of their accuracy, convergence and effectivity, and the major technical issues in mesh free methods are discussed.
Journal ArticleDOI
Combination of meshless local weak and strong (MLWS) forms to solve the two dimensional hyperbolic telegraph equation
Mehdi Dehghan,Arezou Ghesmati +1 more
TL;DR: In this article, a meshless local weak-strong (MLWS) method is proposed to solve the second-order two-space-dimensional telegraph equation, which combines the advantage of local weak and strong forms to avoid their shortcomings.
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