SMC -easy to process and inexpensive- has been proved as a material with good mechanical properties. Furhtermore the specific energy absorption capability is reaching higher levels than steel and aluminium as shown during intensive investigations dealing with the crash behaviour of SMC. Thus, there are all material requirements fulfilled to apply SMC for structural components in automotive industry. The presented research program handled an additional requirement demanded for vehicle design: prediction of crush failure by numerical simulation. Therefore, a special SMC material model was developed and implemented in LS-DYNA3D in order to calculate crash members under axial crash load. Comparison of experimental and simulation results demonstrated the prediction capability of the new model. The developed tool contributes to reduce the number of expensive crash tests and the developing time for structural parts in the crashworthiness structure of automobiles. Further research activities are scheduled to verify the software code and material model for more complex structures.
Crash simulation of SMC-structures
1998
8 Seiten, 11 Bilder, 1 Tabelle, 14 Quellen
Conference paper
English
Stauchfestigkeit , Bruchenergie , Polypropylen , Schaumstoff , Simulation , Modell , Rissbildung , Stoßstange , Automobilindustrie , Kosten , Prüfung , Prüftest , Stauchbeanspruchung , SMC (Kunststoffherstellung) , Herstellung verstärkter Kunststoffe , Versagen , Unfall , Energieabsorption , Aufprallversuch
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