Simulation-free hyper-reduced models for geometrically nonlinear structural dynamics

S. Jain, P. Tiso

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

We present a variant of the Energy Conserving Sampling and Weighting (ECSW) method that minimizes the offline cost associated to the construction of reduced order models of FE discretized geometrically nonlinear structural dynamics problems. The training sets required by ECSW are obtained by lifting linear modal analysis responses on a quadratic manifold generated with modal derivatives. The resorting on expensive POD of the full response is completely avoided. The method is particularly suited for the dynamic analysis of flexible airframes featuring geometric nonlinearities.

Original languageEnglish
Title of host publication17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017
PublisherInternational Forum on Aeroelasticity and Structural Dynamics (IFASD)
ISBN (Electronic)9788897576280
Publication statusPublished - 2017
Externally publishedYes
Event17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017 - Como, Italy
Duration: 25 Jun 201728 Jun 2017

Publication series

Name17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017
Volume2017-June

Conference

Conference17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017
Country/TerritoryItaly
CityComo
Period25/06/1728/06/17

Keywords

  • Geometric nonlinearity
  • Hyper-reduction
  • Model order reduction
  • Simulation-free training
  • Structural dynamics

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