Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Preserving Lagrangian Structure in Nonlinear Model Reduction with Application to Structural Dynamics

Journal Article · · SIAM Journal on Scientific Computing
DOI:https://doi.org/10.1137/140959602· OSTI ID:1140523
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Our work proposes a model-reduction methodology that preserves Lagrangian structure and achieves computational efficiency in the presence of high-order nonlinearities and arbitrary parameter dependence. As such, the resulting reduced-order model retains key properties such as energy conservation and symplectic time-evolution maps. We focus on parameterized simple mechanical systems subjected to Rayleigh damping and external forces, and consider an application to nonlinear structural dynamics. To preserve structure, the method first approximates the system's “Lagrangian ingredients''---the Riemannian metric, the potential-energy function, the dissipation function, and the external force---and subsequently derives reduced-order equations of motion by applying the (forced) Euler--Lagrange equation with these quantities. Moreover, from the algebraic perspective, key contributions include two efficient techniques for approximating parameterized reduced matrices while preserving symmetry and positive definiteness: matrix gappy proper orthogonal decomposition and reduced-basis sparsification. Our results for a parameterized truss-structure problem demonstrate the practical importance of preserving Lagrangian structure and illustrate the proposed method's merits: it reduces computation time while maintaining high accuracy and stability, in contrast to existing nonlinear model-reduction techniques that do not preserve structure.
Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1140523
Report Number(s):
SAND2014--0933J; 498849
Journal Information:
SIAM Journal on Scientific Computing, Journal Name: SIAM Journal on Scientific Computing Journal Issue: 2 Vol. 37; ISSN 1064-8275
Publisher:
SIAMCopyright Statement
Country of Publication:
United States
Language:
English

References (17)

Non-linear model reduction for uncertainty quantification in large-scale inverse problems journal January 2009
Reliable Real-Time Solution of Parametrized Partial Differential Equations: Reduced-Basis Output Bound Methods journal November 2001
Nonlinear Model Reduction via Discrete Empirical Interpolation journal January 2010
Efficient structure-preserving model reduction for nonlinear mechanical systems with application to structural dynamics
  • Carlberg, Kevin; Tuminaro, Ray; Boggs, Paul
  • 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference<BR>20th AIAA/ASME/AHS Adaptive Structures Conference<BR>14th AIAA https://doi.org/10.2514/6.2012-1969
conference April 2012
Efficient non-linear model reduction via a least-squares Petrov-Galerkin projection and compressive tensor approximations
  • Carlberg, Kevin; Bou-Mosleh, Charbel; Farhat, Charbel
  • International Journal for Numerical Methods in Engineering, Vol. 86, Issue 2 https://doi.org/10.1002/nme.3050
journal October 2010
Dimensional reduction of nonlinear finite element dynamic models with finite rotations and energy-based mesh sampling and weighting for computational efficiency: NONLINEAR MODEL REDUCTION AND ENERGY-CONSERVING SAMPLING AND WEIGHTING journal April 2014
Structure-preserving model reduction for mechanical systems journal October 2003
An ‘empirical interpolation’ method: application to efficient reduced-basis discretization of partial differential equations journal November 2004
A priori hyperreduction method: an adaptive approach journal January 2005
The GNAT method for nonlinear model reduction: Effective implementation and application to computational fluid dynamics and turbulent flows journal June 2013
Discrete mechanics and variational integrators journal May 2001
A posteriori error bounds for reduced-basis approximations of parametrized parabolic partial differential equations journal January 2005
Missing Point Estimation in Models Described by Proper Orthogonal Decomposition journal November 2008
Reduced Basis Approximation for Nonlinear Parametrized Evolution Equations based on Empirical Operator Interpolation journal January 2012
Low-Rank Matrix Completion by Riemannian Optimization journal January 2013
A Posteriori Error Estimation for DEIM Reduced Nonlinear Dynamical Systems journal January 2014
Karhunen–Loève procedure for gappy data journal January 1995

Cited By (11)

Symplectic Model Reduction of Hamiltonian Systems journal January 2016
Physically constrained data‐driven correction for reduced‐order modeling of fluid flows journal October 2018
Hyper-reduced order models for parametrized unsteady Navier-Stokes equations on domains with variable shape journal November 2019
Structure-Preserving Model-Reduction of Dissipative Hamiltonian Systems journal February 2018
High Performance Reduced Order Modeling Techniques Based on Optimal Energy Quadrature: Application to Geometrically Non-linear Multiscale Inelastic Material Modeling journal February 2018
Constrained sparse Galerkin regression journal January 2018
Sparse reduced-order modelling: sensor-based dynamics to full-state estimation journal April 2018
A Reduced Generalized Multiscale Basis Method for Parametrized Groundwater Flow Problems in Heterogeneous Porous Media journal March 2019
Modal Analysis of Fluid Flows: Applications and Outlook journal March 2020
Sparse reduced-order modeling : Sensor-based dynamics to full-state estimation text January 2017
Modal Analysis of Fluid Flows: Applications and Outlook preprint January 2019

Similar Records

On regularization of second order Lagrangians
Journal Article · Mon Oct 04 00:00:00 EDT 2004 · AIP Conference Proceedings · OSTI ID:20630234

Lagrangian density for collisional plasma
Journal Article · Wed Dec 31 23:00:00 EST 1975 · Journal of Plasma Physics · OSTI ID:1022011

Macroscopic Lagrangian description of warm plasmas, 1. formulation of the Langrangian
Journal Article · Fri Dec 31 23:00:00 EST 1982 · Radio Science · OSTI ID:1081873