Modelling crash behaviour in future lightweight composite vehicles - Step 2

Purpose and goal

To deliver an efficient CAE methodology to analyse structural composites in crash, the current project has developed both an advanced material model for progressive ply failure, and an adaptive shell model that can reduce simulation times. The project as also led to a significant increase in competence among the partners in modelling and simulating composites in crash. Through this project and its activities, the consortium has established a competitive position in Europe.

Expected results and effects

The project has delivered CAE tools that increase the possibilities for a predictive and efficient assessment of the crashworthiness of structural composite components. The project has taken several important steps towards vehicles with lower weight, by facilitating the replacing of today’s metal structures with composites. However, there are still questions to be addressed, one of them being the proper way to describe the interaction between delamination and progressive ply failure. In any case, the project results provide a solid base for further research and development.

Planned approach and implementation

To achieve the project goals, the project was divided into five WPs. In the first WP, a model that describes how mechanical properties depend on strain-rate was developed. In the second WP, an adaptive shell model was developed, which has the potential of lowering simulation times. In the third WP, simulation guidlines for composites in crash were developed, and demonstrators were designed. In the fourth WP, demonstrators were manufactured, tested and analysed. Furthermore, the CAE tools developed were assessed. Finally, in the fifth WP, the project results were disseminated.