Numerical assessment of reduced order modeling techniques for dynamic analysis of jointed structures with contact nonlinearities

Jie Yuan, Fadi El-Haddad, Loic Salles, Chian Wong

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

This work presents an assessment of classical and state of the art reduced order modeling (ROM) techniques to enhance the computational efficiency for dynamic analysis of jointed structures with local contact nonlinearities. These ROM methods include classical free interface method (Rubin method, MacNeal method), fixed interface method Craig-Bampton (CB), Dual Craig-Bampton (DCB) method and also recently developed joint interface mode (JIM) and trial vector derivative (TVD) approaches. A finite element (FE) jointed beam model is considered as the test case taking into account two different setups: one with a linearized spring joint and the other with a nonlinear macroslip contact friction joint. Using these ROM techniques, the accuracy of dynamic behaviors and their computational expense are compared separately. We also studied the effect of excitation levels, joint region size, and number of modes on the performance of these ROM methods.

Original languageEnglish
Article number031027
Number of pages12
JournalJournal of Engineering for Gas Turbines and Power
Volume141
Issue number3
DOIs
Publication statusPublished - 31 Mar 2019
Externally publishedYes

Keywords

  • reduced order modeling (ROM) techniques
  • computational efficiency
  • jointed structures

Fingerprint

Dive into the research topics of 'Numerical assessment of reduced order modeling techniques for dynamic analysis of jointed structures with contact nonlinearities'. Together they form a unique fingerprint.

Cite this