Abstract
Vehicle dynamics study together with vehicle crash structural dynamics are performed in this research. A unique vehicle dynamic/crash mathematical model is proposed and studied to discuss the effect of vehicle dynamics characteristics on vehicle crash scenarios. Vehicle dynamic control systems (VDCS) are also co-simulated with the mathematical model to optimize the vehicle dynamic characteristics for imminent impact in a way that help improve vehicle impact characteristics and mitigate its collision. This mathematical model integrates anti-lock braking system (ABS) and active suspension (AS) control system together with crash structure modeling. Validation of the vehicle crash structure in the proposed mathematical model is achieved to ensure that the modeling of crumble zone gives accurate results. This validation is performed by comparing the simulated results with realistic crash test data and other models results. Numerical simulation of the related mathematical model is obtained. It is demonstrated from this simulations that the vehicle dynamic response and crash scenario can be captured and analyzed fast and accurately. It is also shown that the mathematical model is flexible and useful for optimization studies. The notable result from this investigation is the less deformation of the crumple zone of the vehicle when (ABS) is applied together with (AS) control system. Numerical simulation in the case of full frontal vehicle-to- rigid barrier collision scenario is obtained and validation of the vehicle crash structure in the proposed mathematical model is achieved. It is shown that the vehicle dynamic response and crash scenario are captured and analyzed accurately. It is also shown that the mathematical model is flexible and useful in optimization studies.
Keywords: Dynamic analysis, control, collision mitigation, mathematical modelling, numerical simulations.