2013 Fiscal Year Final Research Report
Folded airbag deployment analysis using large-deformation fluid-structure coupling method based on level sets
| Project/Area Number |
24760059
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Engineering fundamentals
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| Research Institution | The University of Tokyo |
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Principal Investigator |
GAKU Hashimoto 東京大学, 新領域創成科学研究科, 助教 (00455362)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | シミュレーション工学 / 流体工学 / 流体 / 構造工学・地震工学 / 計算物理 |
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| Research Abstract |
In this study, we applied a contact model to a Lagrangian-Eulerian fluid-structure coupling method based on level sets in order to simulate folded airbag deployment. In the case of self-contact, a zero isosurface of the level set function disappears at the interface on the Eulerian fluid mesh. To avoid unphysical inflow/outflow on the contact surface and satisfy the kinematic condition, we introduced discontinuity of physical quantity into the interface treatment method. As a result, we confirmed that the airbag inflates with self-contact and showed the algorithmic performance on parallel computers.
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