The behaviour of curved-crease foldcores under low-velocity impact loads
<p>The primary aim of this paper was to manufacture aluminium curved-crease foldcores and assess their behaviour under quasi-static compressive loads, relative to existing straight-crease foldcores and a honeycomb cores. Four foldcore types, standard, indented, and two curved-crease foldcore...
| Váldodahkkit: | , |
|---|---|
| Materiálatiipa: | Journal article |
| Almmustuhtton: |
Elsevier
2014
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| _version_ | 1826280129617199104 |
|---|---|
| author | Gattas, J You, Z |
| author_facet | Gattas, J You, Z |
| author_sort | Gattas, J |
| collection | OXFORD |
| description | <p>The primary aim of this paper was to manufacture aluminium curved-crease foldcores and assess their behaviour under quasi-static compressive loads, relative to existing straight-crease foldcores and a honeycomb cores. Four foldcore types, standard, indented, and two curved-crease foldcore tessellations, were constructed with comparable density and height to a commercial honeycomb core. An experimental and numerical study of foldcore performance under quasi-static crush loads showed that all foldcore types were highly sensitive to geometric imperfections, and that curved-crease foldcores had significantly higher energy-absorption capability than straight-crease foldcores. Validated numerical methods were used in a comprehensive parametric study on curved-crease foldcore geometry, with two main findings. First, it was seen that altering the curved-crease foldcore tessellation did not provide significant energy-absorption capability beyond that achievable with direct changes to the core aspect ratio. Second, an optimum configuration of the curved-crease foldcore was found which appeared to offer a comparable out-of-plane strength, energy-absorption under quasi-static compressive loads, and stiffness to a honeycomb core. A brief numerical investigation into low-velocity impact loading showed that curved-crease foldcores were the only foldcore type that saw a substantial inertial strengthening under dynamic loading, although not to as large an extent as honeycomb.</p> |
| first_indexed | 2024-03-07T00:09:05Z |
| format | Journal article |
| id | oxford-uuid:7897ef8d-5c5d-495c-abca-d2c20c854796 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:09:05Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:7897ef8d-5c5d-495c-abca-d2c20c8547962022-03-26T20:31:39Z The behaviour of curved-crease foldcores under low-velocity impact loads Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7897ef8d-5c5d-495c-abca-d2c20c854796Symplectic Elements at OxfordElsevier2014Gattas, JYou, Z <p>The primary aim of this paper was to manufacture aluminium curved-crease foldcores and assess their behaviour under quasi-static compressive loads, relative to existing straight-crease foldcores and a honeycomb cores. Four foldcore types, standard, indented, and two curved-crease foldcore tessellations, were constructed with comparable density and height to a commercial honeycomb core. An experimental and numerical study of foldcore performance under quasi-static crush loads showed that all foldcore types were highly sensitive to geometric imperfections, and that curved-crease foldcores had significantly higher energy-absorption capability than straight-crease foldcores. Validated numerical methods were used in a comprehensive parametric study on curved-crease foldcore geometry, with two main findings. First, it was seen that altering the curved-crease foldcore tessellation did not provide significant energy-absorption capability beyond that achievable with direct changes to the core aspect ratio. Second, an optimum configuration of the curved-crease foldcore was found which appeared to offer a comparable out-of-plane strength, energy-absorption under quasi-static compressive loads, and stiffness to a honeycomb core. A brief numerical investigation into low-velocity impact loading showed that curved-crease foldcores were the only foldcore type that saw a substantial inertial strengthening under dynamic loading, although not to as large an extent as honeycomb.</p> |
| spellingShingle | Gattas, J You, Z The behaviour of curved-crease foldcores under low-velocity impact loads |
| title |
The behaviour of curved-crease foldcores under low-velocity impact loads
|
| title_full |
The behaviour of curved-crease foldcores under low-velocity impact loads
|
| title_fullStr |
The behaviour of curved-crease foldcores under low-velocity impact loads
|
| title_full_unstemmed |
The behaviour of curved-crease foldcores under low-velocity impact loads
|
| title_short |
The behaviour of curved-crease foldcores under low-velocity impact loads
|
| title_sort | behaviour of curved crease foldcores under low velocity impact loads |
| work_keys_str_mv | AT gattasj thebehaviourofcurvedcreasefoldcoresunderlowvelocityimpactloads AT youz thebehaviourofcurvedcreasefoldcoresunderlowvelocityimpactloads AT gattasj behaviourofcurvedcreasefoldcoresunderlowvelocityimpactloads AT youz behaviourofcurvedcreasefoldcoresunderlowvelocityimpactloads |