Browse Publications Technical Papers 2003-01-0258
2003-03-03

Hydroformed Tube Modeling in Crash FEA Model 2003-01-0258

Hydroformed truck frame side rails from circular tubes are studied for gage variations and pre-strain to be used in crash FEA modeling practice. This study provides simplified models that achieve feasible correlation with actual tests. Meanwhile, from plasticity theory we derive a forming equation in conjunction with forming limit diagrams to estimate material properties for hydroformed rails.

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