| Autor: |
Avinash Rao, Vikas Gupta, Thomas J. Trella, Ramki Maruthayappan, Randa Radwan Samaha |
| Rok vydání: |
1999 |
| Předmět: |
|
| Zdroj: |
SAE Technical Paper Series. |
| ISSN: |
0148-7191 |
| Popis: |
Finite element (FE) modeling is becoming an integral approach to the study of crashworthiness of vehicle structures and occupant interaction with the structure. This paper describes the development of mathematical models to perform complete side impact simulation. The fully developed model can be used to evaluate occupant compartment intrusion and to assess occupant protection countermeasures in various side impact scenarios. A baseline finite element model of the side impact dummy (SID) was refined and calibrated using dynamic material and subsystem test data. Lower extremity geometry was reverse engineered and suitable material models and joints were incorporated in the revised model. Implementing dynamic material models, improved contact interfaces, and rate dependent damper systems were the key enhancements carried out in the upper thorax region. Subsystem dynamic tests and full system dynamic calibration test data were used to verify the SID model responses. The verification involved an iterative process of material, subsystem, and full dummy model simulations. The FE model results compared well with test data. A full vehicle public domain FE model of a 1991 Ford Taurus was developed using reverse engineering. This model was enhanced by adding sufficient details of the vehicle's interior components to simulate their interaction with the FE-SID dummy during impact. Finally, the enhanced FE-SID model was placed in the Ford Taurus and dynamic simulations using LS-DYNA3D were conducted for two different side impacts. Occupant injury parameters were compared and verified with test data. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
