Study of the deformation of a sandwich shield subjected to bird impact: A behaviour analysis tool using vector decomposition

Wilhelm, Arnaud; Rivallant, Samuel; Ferrero, Jean-François

doi:10.1177/1099636217697499

Cited by 2 publications

(8 citation statements)

References 19 publications

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“…In a previous work [16], we described a behaviour analysis tool allowing to decompose the deformation of a shield into three modes: Indentation, Bending and Crushing. The main principle of this tool is to project at each time step the vector representing the shield deformation on a basis defined a priori and describing the three deformation modes.…”

Section: Outputs Studiedmentioning

confidence: 99%

“…The main principle of this tool is to project at each time step the vector representing the shield deformation on a basis defined a priori and describing the three deformation modes. It has been shown that this decomposition describes efficiently the deformation of any shield with only a small residue (less than 10% in norm) [16]. Using this tool, it is then possible to extract the maximum norm of each deformation mode along time.…”

Section: Outputs Studiedmentioning

confidence: 99%

“…Thus, it is necessary to choose which parameters to take into account before conducting the parametric study. In [16], we conducted on this finite element model a screening analysis to identify the most influential parameters on the shield behaviour, using the deformation-based behaviour analysis tool presented above. This screening has been extended to identify influences on the shield behaviour (three outputs) and the four protection criterions (four additional outputs).…”

Section: Case Study Descriptionmentioning

confidence: 99%

“…In the next section, the case study is defined and the finite element model used is presented. Then, the different outputs which will be followed throughout the study are presented and, according to a previous study [16], the most influential parameters are determined.…”

Section: Introductionmentioning

confidence: 99%

“…and are the same as in[16], representing materials typically seen in the industry for such applications.…”

mentioning

confidence: 99%

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Sandwich shield subjected to bird impact: Use of surrogate models for influencing parameter analysis and shield behaviour understanding

Wilhelm

Rivallant

Ferrero

et al. 2018

Jnl of Sandwich Structures & Materials

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In this work, the behaviour of a sandwich shield subjected to a 1.82 kg bird impact at 175 m/s is studied using a finite element model. The 6 most influential design parameters are varied and their effects on the shield behaviour and on the target protection are assessed. First, we try to establish an engineer's visualization by varying parameters 2 × 2 using three 5-levels full-factorial design of experiments. These three 2D design of experiments enable us to visualize precisely the different effects of each parameter. Then a full sensitivity analysis (6D) is performed using a Latin Hypercube sampling to assess the possible interactions between parameters. Surrogate models are constructed using the Gaussian Process framework to follow the variation of the outputs in the 6D design space. These surrogate models are finally studied using two statistical methods: the Sobol′ method and the Morris method. The methodology developed in this study enables to improve the understanding of the behaviour of a shield under a soft body impact, as a first step towards a shield design tool.

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Section: Outputs Studiedmentioning

confidence: 99%

Section: Outputs Studiedmentioning

confidence: 99%

Section: Case Study Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…and are the same as in[16], representing materials typically seen in the industry for such applications.…”

mentioning

confidence: 99%