Design of vehicle parts under impact loading using a multi-objective design approach

Abstract

In this study, a multi-objective design approach with accelerated methodology was developed for a B-pillar (side door pillar) in which the intrusion velocity was decreased and the crash energy absorbed. The B-pillar material characteristics were determined using a drop tower test to accelerate the design process instead of a vehicle crash test. A finite element simulation of the drop tower test was conducted, and the results obtained from the simulation were confirmed with the test results. The side impact finite element model was simulated according to the Euro NCAP test protocol, and the B-pillar was divided into two sections using the results obtained from the analysis. Tailor rolled blank and Tailor welded blank B-pillar crash simulations were performed, and the results were compared to examine the intrusion velocity. Alternative design solutions for single and multi-material B-pillars were conducted to design an optimum B-pillar structure. The design functions were created using the radial basis function method, and the failure criteria were determined for the analyses. Optimization problems for weight minimization and maximum energy absorption were established and solved using meta-heuristic methods. The approach suggested in this study can be used in accelerated B-pillar designs.

Archives of Metallurgy and Materials

“…the S/n ratio was employed rather than the standard deviation as a measurable data since the standard deviation often deceases as either the mean decreases and vice versa [21][22][23][24]. In this way, it is no more a requirement to reduce the standard deviation first and get the average to the target in the same way as previously discussed in the literature whereby the target mean value varied during the process development [25].…”

Optimization of a B-pillar with tailored properties under impact loading

“…B-pillars are essential in protecting occupants from such accidents (Figure 1). Although there are many studies on the collision performance of B-pillars in the literature [3][4][5][6][7][8], studies on the impact performance of hot-formed B-pillars are limited. The collision performance of fully martensitic B-pillar and B-pillar with tailored properties was compared numerically and experimentally.…”

Dynamic Modelling of Docking Autonomous PODs in Tandem Configuration

“…Song et al [28] used data from California automated vehicle collision reports to learn how to develop test scenarios. Oztürk et al [29] developed an accelerated design method for a side door pillar to absorb crash energy. For the purpose of optimizing the vehicle design for crashworthiness, Yu et al [30] used blank structures in the front-end of electric vehicles, whereas Noorsumar et al [31] reviewed mathematical modeling of vehicle crash.…”