Title: A variational multiscale immersed meshfree method for heterogeneous materials

Journal Article · · Computational Mechanics

Abstract We introduce an immersed meshfree formulation for modeling heterogeneous materials with flexible non-body-fitted discretizations, approximations, and quadrature rules. The interfacial compatibility condition is imposed by a volumetric constraint, which avoids a tedious contour integral for complex material geometry. The proposed immersed approach is formulated under a variational multiscale based formulation, termed the variational multiscale immersed method (VMIM). Under this framework, the solution approximation on either the foreground or the background can be decoupled into coarse-scale and fine-scale in the variational equations, where the fine-scale approximation represents a correction to the residual of the coarse-scale equations. The resulting fine-scale solution leads to a residual-based stabilization in the VMIM discrete equations. The employment of reproducing kernel (RK) approximation for the coarse- and fine-scale variables allows arbitrary order of continuity in the approximation, which is particularly advantageous for modeling heterogeneous materials. The effectiveness of VMIM is demonstrated with several numerical examples, showing accuracy, stability, and discretization efficiency of the proposed method.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1769525
Report Number(s):
SAND-2021-2891J; PII: 1968
Journal Information:
Computational Mechanics, Journal Name: Computational Mechanics Journal Issue: 4 Vol. 67; ISSN 0178-7675
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

References (49)

EFG approximation with discontinuous derivatives journal April 1998
A stabilized conforming nodal integration for Galerkin mesh-free methods journal January 2000
Isogeometric Analysis book January 2009
Reproducing Kernel Particle Method for Solving Partial Differential Equations reference-book December 2017
Reproducing kernel particle methods journal April 1995
Nitsche's method for interface problems in computa-tional mechanics: Nitsche's method for interface problems in computa-tional mechanics journal November 2005
Treatment of material discontinuity in two meshless local Petrov-Galerkin (MLPG) formulations of axisymmetric transient heat conduction journal January 2004
Treatment of discontinuity in the reproducing kernel element method journal January 2005
A bubble-stabilized finite element method for Dirichlet constraints on embedded interfaces journal January 2006
Meshfree and finite element nodal integration methods: NODAL INTEGRATION TECHNIQUES FOR MESHFREE AND FINITE ELEMENT METHODS journal September 2007
A stable Lagrange multiplier space for stiff interface conditions within the extended finite element method
  • Béchet, Éric; Moës, Nicolas; Wohlmuth, Barbara
  • International Journal for Numerical Methods in Engineering, Vol. 78, Issue 8 https://doi.org/10.1002/nme.2515
journal May 2009
Immersed particle method for fluid-structure interaction: PARTICLE METHOD FOR FLUID-STRUCTURE INTERACTION
  • Rabczuk, Timon; Gracie, Robert; Song, Jeong-Hoon
  • International Journal for Numerical Methods in Engineering, Vol. 81, Issue 1 https://doi.org/10.1002/nme.2670
journal August 2009
An arbitrary order variationally consistent integration for Galerkin meshfree methods: A VARIATIONALLY CONSISTENT INTEGRATION FOR MESHFREE METHODS
  • Chen, Jiun-Shyan; Hillman, Michael; Rüter, Marcus
  • International Journal for Numerical Methods in Engineering, Vol. 95, Issue 5 https://doi.org/10.1002/nme.4512
journal June 2013
An accelerated, convergent, and stable nodal integration in Galerkin meshfree methods for linear and nonlinear mechanics: ACCELERATED, CONVERGENT, STABLE NODAL INTEGRATION IN MESHFREE METHODS journal December 2015
The finite element method with Lagrangian multipliers journal June 1973
Über ein Variationsprinzip zur Lösung von Dirichlet-Problemen bei Verwendung von Teilräumen, die keinen Randbedingungen unterworfen sind journal July 1971
New Cartesian grid methods for interface problems using the finite element formulation journal November 2003
Mathematical foundations of the immersed finite element method journal December 2005
On finite element formulations for nearly incompressible linear elasticity journal August 2007
Extended particle difference method for weak and strong discontinuity problems: part I. Derivation of the extended particle derivative approximation for the representation of weak and strong discontinuities journal November 2013
Extended particle difference method for weak and strong discontinuity problems: part II. Formulations and applications for various interfacial singularity problems journal November 2013
RKPM2D: an open-source implementation of nodally integrated reproducing kernel particle method for solving partial differential equations journal August 2019
Effect of phase shape and size on the FEM analysis of indentation test of duplex stainless steel microstructures journal March 2020
Streamline upwind/Petrov-Galerkin formulations for convection dominated flows with particular emphasis on the incompressible Navier-Stokes equations journal September 1982
A new finite element formulation for computational fluid dynamics: V. Circumventing the babuška-brezzi condition: a stable Petrov-Galerkin formulation of the stokes problem accommodating equal-order interpolations journal November 1986
A new finite element formulation for computational fluid dynamics: VIII. The galerkin/least-squares method for advective-diffusive equations journal May 1989
A relationship between stabilized finite element methods and the Galerkin method with bubble functions journal April 1992
Multiscale phenomena: Green's functions, the Dirichlet-to-Neumann formulation, subgrid scale models, bubbles and the origins of stabilized methods journal November 1995
On some techniques for approximating boundary conditions in the finite element method journal November 1995
Mesh-free simulations of shear banding in large deformation journal November 2000
New boundary condition treatments in meshfree computation of contact problems journal July 2000
Treatment of material discontinuity in the Element-Free Galerkin method journal December 1996
Reproducing Kernel Particle Methods for large deformation analysis of non-linear structures journal December 1996
The variational multiscale method—a paradigm for computational mechanics journal November 1998
Homogenization of magnetostrictive particle-filled elastomers using an interface-enriched reproducing kernel particle method journal May 2003
A distributed Lagrange multiplier/fictitious domain method for particulate flows journal August 1999
Multiple scale meshfree methods for damage fracture and localization journal December 1999
An immersed particle modeling technique for the three-dimensional large strain simulation of particulate-reinforced metal-matrix composites journal February 2016
Imposing essential boundary conditions in mesh-free methods journal March 2004
Immersed finite element method journal May 2004
An implicit gradient model by a reproducing kernel strain regularization in strain localization problems journal July 2004
A variational framework for fluid–solid interaction problems based on immersed domains: Theoretical bases journal April 2008
Residual-free bubbles for embedded Dirichlet problems journal August 2008
The finite cell method for three-dimensional problems of solid mechanics journal August 2008
Nodally integrated implicit gradient reproducing kernel particle method for convection dominated problems journal February 2016
Conforming window functions for meshfree methods journal April 2019
Numerical modeling of composite solids using an immersed meshfree Galerkin method journal February 2013
A penalty method for the simulation of fluid - rigid body interaction journal September 2005
A Meshfree procedure for the microscopic analysis of particle-reinforced rubber compounds journal June 2009