In this thesis the sheet metal forming effects such as plastic strain and thickness
changes in the crash have been investigated by numerical analysis.
The sheet metal forming histories of the components of the load path that absorbs the
highest energy during a frontal crash have been considered. To find out the particular
load path, the frontal crash analysis of Ford F250 Pickup has been performed at 56
kph into a rigid wall with finite element analysis without considering the forming
history. The sheet metal forming simulations have been realized for each structural
component building up the particular load path. After forming histories have been
acquired, plastic strain and thickness distributions have been transferred to the frontal
crash analysis. The frontal crash analysis of Ford F250 Pickup has been repeated by
including these to introduce the effect of forming on crash response of the vehicle.
The results of the simulations with and without forming effect have been compared
with the physical crash test results to evaluate the sheet metal forming effect on the
overall crash response. The results showed that with forming history the crash
response of the vehicle and deformations of the particular components have been
changed and the maximum deceleration pulse transferred to the passenger
compartment has decreased. It has seen that a good agreement with physical test
results has been achieved.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12610725/index.pdf |
| Date | 01 July 2009 |
| Creators | Dogan, Ulug Cagri |
| Contributors | Gokler, Mustafa Ilhan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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