Reduced order approximation of the lattice discrete particle model for the simulation of FRP confined concrete columns

C. Ceccato*, X. Zhou, D. Pelessone, C. Pellegrino, G. Cusatis

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It has been recently proved that the Lattice Discrete Particle Model (LDPM) is capable of accurately capturing the behavior of uniformly and non-uniformly confined concrete and, consequently, it can be considered a useful tool for the simulation of FRP confined concrete columns with different cross sections under compressive loading. The LDPM computational framework is implemented into a multi-purpose structural analysis program called MARS, which is based on an explicit dynamic algorithm scheme, advantageous in terms of convergence. However, decreasing the maximum stable time step with the highest natural frequency of the system, the computational time necessary to carry out simulations of quasi-static events, like the compression tests in the present study, might be highly demanding. In order to decrease the computational cost of the simulations, the Proper Orthogonal Decomposition (POD) as a model reduction technique has been explored for the application to the LDPM models of FRP confined columns and the relationship between efficiency gain and accuracy loss is discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016
EditorsJ.G. Dai, J.G. Teng
PublisherDepartment of Civil and Environmental Engineering and Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University
Pages277-282
Number of pages6
ISBN (Electronic)9789881448026
StatePublished - Jan 1 2016
Event8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016 - Hong Kong, China
Duration: Dec 14 2016Dec 16 2016

Publication series

NameProceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016

Other

Other8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016
Country/TerritoryChina
CityHong Kong
Period12/14/1612/16/16

Keywords

  • Confinement
  • FRP
  • LDPM
  • Numerical model
  • POD

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Polymers and Plastics

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