Development of a finite element model for the simulation of parabolic impact of sandwich panels
Sandwich panels are lightweight structures of two thin high strength facesheets bonded to either side of a thick low density core such as foams and honeycombs. It is necessary to study the impact response of sandwich structures in order to ensure the reliability and safety of these structures. The r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2015-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20159401018 |
| _version_ | 1818740770030485504 |
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| author | Ramakrishnan Karthik Ram Guérard Sandra Mahéo Laurent Shankar Krishna Viot Philippe |
| author_facet | Ramakrishnan Karthik Ram Guérard Sandra Mahéo Laurent Shankar Krishna Viot Philippe |
| author_sort | Ramakrishnan Karthik Ram |
| collection | DOAJ |
| description | Sandwich panels are lightweight structures of two thin high strength facesheets bonded to either side of a thick low density core such as foams and honeycombs. It is necessary to study the impact response of sandwich structures in order to ensure the reliability and safety of these structures. The response of sandwich panels to impact loading is usually studied for impact at normal angle of incidence. In real engineering situations, the structures are more frequently loaded at some oblique angle or with a complex trajectory. It is easy to carry out normal impact tests using devices like the drop tower, but impacts at oblique angles are difficult to characterise experimentally. A tri-dimensional impact device called Hexapod has been developed to experimentally study the impact loading of sandwich plates with a parabolic trajectory. The Hexapod is a modified Gough-Stewart platform that can be moved independently in the six degrees of freedom, corresponding to three translation axes and three rotation axes. In this paper, an approach for modelling the parabolic impact of sandwich structures with thin metallic facesheets and polymer foam core using commercial finite element code LS-DYNA software is presented. The results of the FE model of sandwich panels are compared with experimental data in terms of the time history of vertical and horizontal components of force. A comparison of the strain history obtained from Digital Image Correlation and LS-Dyna model are also presented. |
| first_indexed | 2024-12-18T01:46:00Z |
| format | Article |
| id | doaj.art-2d523ac232334a4da4936e53aae8f54e |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T01:46:00Z |
| publishDate | 2015-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-2d523ac232334a4da4936e53aae8f54e2022-12-21T21:25:10ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01940101810.1051/epjconf/20159401018epjconf-dymat2015_01018Development of a finite element model for the simulation of parabolic impact of sandwich panelsRamakrishnan Karthik RamGuérard Sandra0Mahéo Laurent1Shankar Krishna2Viot Philippe3Arts et Métiers ParisTech, I2MLIMATB, Université de Bretagne SudSchool of Engineering and Information Technology, UNSWArts et Métiers ParisTech, I2MSandwich panels are lightweight structures of two thin high strength facesheets bonded to either side of a thick low density core such as foams and honeycombs. It is necessary to study the impact response of sandwich structures in order to ensure the reliability and safety of these structures. The response of sandwich panels to impact loading is usually studied for impact at normal angle of incidence. In real engineering situations, the structures are more frequently loaded at some oblique angle or with a complex trajectory. It is easy to carry out normal impact tests using devices like the drop tower, but impacts at oblique angles are difficult to characterise experimentally. A tri-dimensional impact device called Hexapod has been developed to experimentally study the impact loading of sandwich plates with a parabolic trajectory. The Hexapod is a modified Gough-Stewart platform that can be moved independently in the six degrees of freedom, corresponding to three translation axes and three rotation axes. In this paper, an approach for modelling the parabolic impact of sandwich structures with thin metallic facesheets and polymer foam core using commercial finite element code LS-DYNA software is presented. The results of the FE model of sandwich panels are compared with experimental data in terms of the time history of vertical and horizontal components of force. A comparison of the strain history obtained from Digital Image Correlation and LS-Dyna model are also presented.http://dx.doi.org/10.1051/epjconf/20159401018 |
| spellingShingle | Ramakrishnan Karthik Ram Guérard Sandra Mahéo Laurent Shankar Krishna Viot Philippe Development of a finite element model for the simulation of parabolic impact of sandwich panels EPJ Web of Conferences |
| title | Development of a finite element model for the simulation of parabolic impact of sandwich panels |
| title_full | Development of a finite element model for the simulation of parabolic impact of sandwich panels |
| title_fullStr | Development of a finite element model for the simulation of parabolic impact of sandwich panels |
| title_full_unstemmed | Development of a finite element model for the simulation of parabolic impact of sandwich panels |
| title_short | Development of a finite element model for the simulation of parabolic impact of sandwich panels |
| title_sort | development of a finite element model for the simulation of parabolic impact of sandwich panels |
| url | http://dx.doi.org/10.1051/epjconf/20159401018 |
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