6. LS 6. LS 6. LS 6. LS-DYNA Anwenderforum, Frankenthal 2 DYNA Anwenderforum, Frankenthal 2 DYNA Anwenderforum, Frankenthal 2 DYNA Anwenderforum, Frankenthal 2012 012 012 012 Crash I Crash I Crash I Crash I
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Low-speed crash optimization of vehicle side
door beam under pole side impacts
Ali Ghadianlou
National University of Malaysia UKM, Malaysia
Abstract:
In low-speed collisions, the design criteria are to reduce fixing cost and structural
damage generally. The Side Door Beam (SDB) of a vehicle door plays a
consequential role in absorbing the impact energy. In this study, the permanent
damage of a vehicle door is examined via geometrical modification of the SDB.
Through an explicit finite element analysis (FEA) in a simplified door model, four
different CAD-reinforcing ribs are employed into the SDB to investigate the level of
the door damage. Furthermore, the carefully chosen SDB is individually conducted
by a particular 3-point bending test to construct the approximate crash functions
using response surface method (RSM). Accordingly, multi-objective optimization of
the SDB is performed based on the low-speed objectives of effective plastic strain
and specific energy absorption. Consequently, the maximum elasto-plastic deflection
of the modified door equipped by the optimized SDB is evaluated in order to achieve
less damage.
Keywords:
Side door beam, Finite Element Analysis, low-speed impact, permanent damage,
effective plastic strain, specific energy absorption, reinforcing ribs, multi-objective
optimization.
2012