Coupled Crash Live Deployment Simulation Using LS-DYNA® Functional Mock-up Interface

Advanced driver-assistance systems (ADAS) consist of multiple advanced sensors. Information from these sensors has great potential to improve the performance of existing crash sensing systems. Integrated simulation of the active and passive sensing system is a key enabler to assess the potential benefit. Since ADAS sensing and crash sensing simulation are usually conducted in different environments, co-simulation capability is necessary to bring multiple different environments together to achieve the same simulation goal. In this paper, new co-simulation features have been developed in LS-DYNA using Functional Mock-up Unit (FMU). LS-DYNA is able to generate FMU and co-simulate with other software though Functional Mock-up Interface (FMI). A plugin package “FMU manager” built upon FMI 2.0 standard is provided to LS-DYNA users to implement the FMU import and export. The newly developed features were applied to a coupled live development crash simulation between Matlab/Simulink and LS-DYNA. The crash sensing algorithm was built in Matlab/Simulink and finite element vehicle and airbag models were built in LS-DYNA. Co-simulation between them demonstrated the capability of live deployment simulation under different crash scenarios without modifying the models. In future, the coupled live deployment model will be further integrated with ADAS sensing simulations to explore the benefits of the integrated sensing system.