| Autor: |
Young Won Park, Seung Jun Hong |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Crashworthiness, Occupant Protection and Biomechanics in Transportation Systems. |
| DOI: |
10.1115/imece2001/amd-25439 |
| Popis: |
A successful target-driven development process of frontal crashworthiness crucial to the best practice of systems engineering environment was described to design the front structure of extruded aluminum space frame (ASF) for an electric vehicle development. System analysis and optimization tasks to support requirement analysis, functional analysis and synthesis work were performed. An average acceleration pulse level in a frontal crash is defined to determine front structure target for crashworthiness. Both the axial and bending collapse characteristics of rectangular and circular aluminum extruded members are examined statically and dynamically. Also, material stress-strain property for aluminum 6061T6 and 6063T6 is presented. Concurrent engineering approach taking into account mount functions and package requirement determines the force distribution and energy absorption concept of front structure for frontal crashworthiness. The average acceleration, effective crash space, and the collapse characteristics of aluminum tubes provide the idealization of the plastic collapse stiffness curve of ASF front longitudinal member. The dimensions of rectangular and circular front longitudinal members in axial collapse zone are determined using mean crushing force database of aluminum extrusion. Also, quasi-static simulation is performed to determine the dimensions of front rail in bending collapse zone. The study demonstrates the results of the full vehicle crash simulation and the limitations of aluminum vehicle crash analysis. The development process of this study is applied to vehicle manufacture. Full vehicle crash test is conducted to verify CAE prediction and to provide a successful accomplishment of proposed process. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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