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Reduced order modeling of soft-body impact on glass panels

Andersson, Linus LU ; Kozłowski, Marcin LU ; Persson, Peter LU ; Austrell, Per Erik LU and Persson, Kent LU (2022) In Engineering Structures 256.
Abstract

In the paper, strategies for reduced order modeling of glass panels subjected to soft-body impact are developed by means of dynamic substructuring. The aim is to obtain accurate and computationally efficient models for prediction of the pre-failure elastic response. More specifically, a reduction basis for the subsystem representing the glass panel is established using correction modes, being fixed-interface component modes that considers loading on the substructure boundary. The soft-body impactor is effectively modeled by a nonlinear single-degree-of-freedom system, calibrated by experimental data. Furthermore, a simplified and computationally efficient modeling approach is proposed for the contact interaction between the glass panel... (More)

In the paper, strategies for reduced order modeling of glass panels subjected to soft-body impact are developed by means of dynamic substructuring. The aim is to obtain accurate and computationally efficient models for prediction of the pre-failure elastic response. More specifically, a reduction basis for the subsystem representing the glass panel is established using correction modes, being fixed-interface component modes that considers loading on the substructure boundary. The soft-body impactor is effectively modeled by a nonlinear single-degree-of-freedom system, calibrated by experimental data. Furthermore, a simplified and computationally efficient modeling approach is proposed for the contact interaction between the glass panel and the impact body. An experimental campaign was carried out to validate the developed models. In particular, the glass strain was measured on simply supported monolithic glass panels subjected to soft-body impact. Additional impact tests were performed to determine the dynamic characteristics of the impactor. Moreover, a detailed numerical reference model was developed to evaluate the discrepancy between the experimental tests and the results provided by the reduced order models. The developed models show good agreement with the experimental results. For the studied load cases, it is shown that an accurate prediction of the pre-failure glass strain can be obtained by systems including only a few generalized degrees-of-freedom.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Damping, Dynamic substructuring, Finite element analysis, Impact testing, Reduced order model, Soft-body impact, Structural glass
in
Engineering Structures
volume
256
article number
113988
publisher
Elsevier
external identifiers
  • scopus:85125136552
ISSN
0141-0296
DOI
10.1016/j.engstruct.2022.113988
language
English
LU publication?
yes
id
c1514ce9-f706-425c-8fda-8c0627fe6d42
date added to LUP
2022-04-20 12:16:02
date last changed
2022-04-20 17:00:36
@article{c1514ce9-f706-425c-8fda-8c0627fe6d42,
  abstract     = {{<p>In the paper, strategies for reduced order modeling of glass panels subjected to soft-body impact are developed by means of dynamic substructuring. The aim is to obtain accurate and computationally efficient models for prediction of the pre-failure elastic response. More specifically, a reduction basis for the subsystem representing the glass panel is established using correction modes, being fixed-interface component modes that considers loading on the substructure boundary. The soft-body impactor is effectively modeled by a nonlinear single-degree-of-freedom system, calibrated by experimental data. Furthermore, a simplified and computationally efficient modeling approach is proposed for the contact interaction between the glass panel and the impact body. An experimental campaign was carried out to validate the developed models. In particular, the glass strain was measured on simply supported monolithic glass panels subjected to soft-body impact. Additional impact tests were performed to determine the dynamic characteristics of the impactor. Moreover, a detailed numerical reference model was developed to evaluate the discrepancy between the experimental tests and the results provided by the reduced order models. The developed models show good agreement with the experimental results. For the studied load cases, it is shown that an accurate prediction of the pre-failure glass strain can be obtained by systems including only a few generalized degrees-of-freedom.</p>}},
  author       = {{Andersson, Linus and Kozłowski, Marcin and Persson, Peter and Austrell, Per Erik and Persson, Kent}},
  issn         = {{0141-0296}},
  keywords     = {{Damping; Dynamic substructuring; Finite element analysis; Impact testing; Reduced order model; Soft-body impact; Structural glass}},
  language     = {{eng}},
  month        = {{04}},
  publisher    = {{Elsevier}},
  series       = {{Engineering Structures}},
  title        = {{Reduced order modeling of soft-body impact on glass panels}},
  url          = {{http://dx.doi.org/10.1016/j.engstruct.2022.113988}},
  doi          = {{10.1016/j.engstruct.2022.113988}},
  volume       = {{256}},
  year         = {{2022}},
}