Implementation and validation of multiphase steel failure models for crash analyses OPTUS III

Purpose and goal

The goal is to validate new models for failure in steel components with tailor-made material properties. The OPTUS model developed in this and previous projects has proved to yield very good results compared to today´s industrially used models. A test component has been developed and laboratory tests have been performed. The model has been developed and implemented for multi-phase materials and made available to the automotive industry. The project has been conducted in collaboration between Luleå University of Technology, Gestamp Hardtech, Dynamore Nordic, Scania and Volvo Cars.

Expected results and effects

The project contributes to the objectives of the programme within the areas “New products with high life cycle efficiency” as well as “Lead time”. The main contribution originates from the objective to use manufacturing simulations during product development. Accurate models and experimental methods for calibration and validation enable efficient design and optimization of vehicle structures with regard to safety, weight and environmental impact. The project has shown that accurate simulations provide basis for further product optimization

Planned approach and implementation

The project activities include validation and assessment of fracture models and failure criteria. Included activities are (performed according to plan): - Validate previously developed failure models on component level and compare results with currently used methods in industry. - Implement models into a commercial code for validation of models for ultra-high strength press hardened structural parts in production. - Develop an industrial strategy for implementation of failure models for steel materials with continuously varying tailor-made material within components.

External links

Projektbeskrivning. Hållfasthetslära/LTU hemsida.