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Application of Shell Honeycomb Model to IIHS MDB Model

Authors:

Shigeki Kojima TOYOTA TECHNICAL DEVELOPMENT CORPORATION

Tsuyoshi Yasuki, Koji Oono Toyota Motor Corporation

ABSTRACT:

This paper describes a new finite element modeling method of Aluminum honeycomb using shell elements. It is our new modeling method that cell size of honeycomb structure is enlarged to increase time step size for FEM analysis, and compressive strength is controlled by thickness of shell elements.

New modeling method was applied to IIHS moving deformable barrier model, and side impact analysis with a full vehicle model was performed. The result of simulation using a new barrier model showed much better correlation with a test result than previous simulations.

Keywords: Automotive Crashworthiness, Side Impact, Moving Deformable Barrier (MDB), and

Aluminum Honeycomb

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REFERENCES

1. Insurance Institute for Highway Safety: Side Impact Test Protocol, http://www.iihs.org/ratings/protocols/default.html

2. Dr. Tore Tryland, "Alternative Models of the Offset and Side Impact Deformable Barriers", 9th International LS-DYNA Users Conference, p.1-9 - 1-16

3. Shigeki Kojima, Tsuyoshi Yasuki, Development of Aluminum Honeycomb Model Using Shell Elements, 9th International LS-DYNA Users Conference, p.18-1 18-10

4. Robert Mayer, Scott Webb, J.T. Wang, Bill Liu, "Sled tests and simulations of offset deformable barrier", International Journal of Vehicle Safety Volume 1, p.238 251

5. Andreas Hirth, Paul Du Bois, Dr. Klaus Weimar, "A Material Model for Transversely Anisotropic Crushable Foams in LS-DYNA", 7th International LS-DYNA Users Conference, p.16-23 - 16-34

6. Tsuyoshi Yasuki, Noriko Watanabe, "Vehicle Crash Analysis Applications to a Vehicle Development", TOYOTA Technical Review Vol.51 No.1 Jun.2001, p.54 59

7. Koji Nojima, "Modeling and Accuracy of Offset Crash Deformable Barrier - Real phenomena and modeling technique", JSAE 2001, p.37 - 41

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