Abstract
In this article, finite element (FE) modelling and analysis of a frontal offset crash test barrier design is presented. Different FE offset deformable barrier (ODB) models are generated by using either shell or solid elements. Mechanics of the honeycomb structure, that constitutes the core of the shell-element barrier, is investigated thoroughly. In constructing the FE shell-element model, several compression test results and virtual thickness method are utilised in order to build a realistic model and overcome computational difficulties. In the full model, cell size of the honeycomb cellular structures are scaled up to 100 mm where virtual thickness method is implemented into the ODB model. Compression test results show good agreement with the desired values at a certain virtual thickness. Virtual thickness method exhibits that the force response of the compression test is directly related with the element number and the thickness of the shell elements. In solid-element ODB model, the barrier behaves in a quite stiff manner, which resulted in high levels of reaction force. However, shell element model shows similar responses with experimental results, and also with the FE models in the literature.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of UMTIK2012 – 15th International Conference on Machine Design and Production, Pamukkale, Denizli, Turkey |
| Number of pages | 16 |
| Publication status | Published - 2012 |
Keywords
- Car Crash Test
- Offset Frontal Impact
- Offset Deformable Barrier (ODB)
- Aluminium Honeycomb
- Shell Element