Additional Notes on Finite Element Models of Deformable Featureless Headform Ford Motor Company

Format:

Conference/Event

Author/Creator:

Chou, Clifford C., author.

Conference Name:

International Congress & Exposition (1997-02-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1997

Summary:

Model characteristics of a finite element deformable featureless headform with one to four layers of solid elements for the headform skin are studied using both the LS-DYNA3D and FCRASH codes. The models use a viscoelastic material law whose constitutive parameters are established through comparisons of drop test simulations at various impact velocities with the test data. Results indicate that the one-layer model has a significant distinct characteristic from the other (2-to-4-layer) models, thus requiring different parametric values. Similar observation is also noticed in simulating drop tests with one and two layers of solid elements for the headform skin using PAM-CRASH. When using the same parametric values for the viscoelastic material, both the LS-DYNA3D and FCRASH simulations yield the same results under identical impact conditions and, thereby, exhibit a "functional equivalency" between these two codes.In addition, the effects of viscoelastic parameters on the headform responses are studied. Further utilization of these models in upper vehicle interior structural simulations yields comparable results regardless of which deformable featureless headform (id est 1- to 4-layer models) is used as an impactor

Notes:

Vendor supplied data

Publisher Number:

970164

Access Restriction:

Restricted for use by site license