THE MESHLESS METHOD (MLPG) FOR DOMAIN & BIE DISCRETIZATIONS
By S. N.Atluri
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This monograph is a sequel to: " The Meshless Local Petrov-Galerkin (MLPG) Method", by S. N. Atluri, and S. Shen, published in 2002. In the intervening two years, much has been accomplished by a number of researchers world-wide, in the further development & application of the meshless method (MLPG) to problems in three-dimensional solid mechanics, beams, plates and shells; and in the seamless modeling of multi-scale phenomena in nano and micro engineering. In addition to providing a summary of these accomplishments, an important feature of the current comprehensive monograph is the presentation of meshless methods to discretize the boundary-integral-equations in mechanics. Thus, the present monograph presents, for the first time, a detailed summary of research on the next generation of computational methods in engineering & the sciences, that go beyond the mesh-based finite-element & boundary-element methods that were so successfully developed in the final two decades of the last century.
Chapter I Global Weak Forms, Weighted Residuals, Finite Elements, Boundary Elements, & Local Weak Forms:
Global weak forms and the weighted residual method (WRM); The Galerkin finite element method; The boundary element method; Local weakforms over overlapping sub-domains.
Charter II Meshless Interpolations of Trial & Test Functions:
Interpolations with a local-support; The moving leastsquares Approximation scheme; Shepard functions; The partition of unity (PU) methods; Reproducing kernel particle interpolation (RKPM); Radial basis functions (RBF) with compact support; Smoothed particle hydrodynamics; Interpolation errors in meshless interpolations.
Chapter III MLPG Method for Domain Discretization:
Numerical implementation of the MLPG method; The imposition of essential boundary conditions in the MLPG approach; Numerical integration of the various local weak-forms; Computational costs; The MLPG approach to nonlinear problems;
Chapter IV The MLPG Method for the Discretization of Boundary Integral Equations (BIE):
Simple formulations of weakly-singular traction & displacement BIE; MLPG approaches for solving the weakly-singular BIEs; MLPG/BIE for acoustic radiation & scattering problems.
Charpter V The MLPG in Solid Mechanics: 3-D Singular Problems and Material Discontinuities; Locking-Free Beam, Plate, & Shell Formulations;
Formulation for the 2D elasto-static problem; Discretization and numerical implementation; Application of the MLPG method to problems with singularities, and material discontinuities, in 3- D elasticity;The MLPG6 method for solving 3D Problems in elasto-statics; The MLPG approach for 3-Dimensional elastodynamics; The MLPG method for beams, plates and shells through a 3-D elasticity formulation, and the locking phenomenon; Analysis of beams using GMLS; MLPG1 and MLPG5 for thin beam problems (4th order formulation); Analysis of shear flexible beams based on locking-free formulation: seamless analysis from thick to thin beams; MLPG method for solving the bending problem of a thin plate (4th order formulation).
Chapter VI Application of the MLPG in Fluid Mechanics:
Upwinding schemes for MLPG; Convection-diffusion problems; Burgers' equations; Incompressible Navier- Stokes equations.
Chapter VII Application of the MLPG in Strain Gradient Theories of Material Behavior, Nanotechnology, and Multi-Scale Modeling:
Analysis of materials with strain-gradient effects; Numerical simulations in nano- and micro-mechanics of materials; Multiscale simulation based on the MLPG method; MLPG/BIE method for multiscale simulation.
A very comprehensive list of more than 300 references to the literature is included.
Hardcover. 680 pages. © 2004. ISBN: 0-9657001-8-6.
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