ADVISE

Advanced Dynamic Validations using Integrated Simulation and Experimentation

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 Obiettivo del progetto (Objective)

'ADVISE is a prenormative project for experimental validation of simulations of dynamic events using full-field optical methods of deformation measurement. These powerful tools are used in evaluating the performance, reliability, and safety of primary structures and for validating their computational design. Optimised design of primary structures leads to lighter and more energy efficient products that cost less, are more reliable and safer. Whilst in engineering modelling the analysis of homogeneous materials subject to impact has become fairly routine, recent advances have been made in modelling the impact of two-dimensional composites. ADVISE brings together advances in optical techniques with the developments in modelling composites in order to establish high levels of confidence through rigorous validation. Such an approach would represent a step change in the subject. The innovative aspects and objectives of the project are: • development of reference materials that allow traceability and calibration of full-field optical methods of deformation measurement in cyclic, transient and non-linear dynamic events; • optimisation of methodologies for both optical measurement and computational modelling and simulation of non-linear, transient dynamic events; • contributions to standardisation activity for experimental validation of dynamic simulations. This represents the first attempt to provide a unified approach to experimental validation of engineering simulations of primary structures subject to dynamic processes, the development of reference materials for optical dynamic deformation measurement. The major contribution to standardisation through VAMAS TWA 26 ensures that the reference materials can become quickly accepted globally, thus providing worldwide traceability for validated designs leading to safer transport systems. Direct dissemination to the EU industrial base will be a priority to maximise the benefits of this research.'

Introduzione (Teaser)

There are many ways to prevent or minimise accidents, one of which is by understanding the consequences of impact and strain on structural materials. The transport sector and industry in general are set to benefit significantly from such an endeavour.

Descrizione progetto (Article)

In a complex, fast-paced world of vehicles, road infrastructures and heavy industry, accidents of all sorts, such as collisions or car crashes, are bound to happen. Today's sophisticated imaging technology can help understand the exact impact of any such accident, an important step in developing better materials and designing improved processes to help avoid accidents.

The EU-funded ?Advanced dynamic validations using integrated simulation and experimentation? (Advise) project aims to accurately measure strain and deformation (breaking, bending, etc.) in live simulations. This will allow industry and product or process designers to pre-empt accidents through better understanding, an initiative that is particularly useful in the transportation sector.

Advances in optical techniques for measuring deformation have been combined with recent ones in modelling the impact of two- and three-dimensional composite structures. Composites are tough hybrid materials that are meant to withstand strain. On the basis of this, Advise is planning to deliver recommendations on improving image-based methods of deformation measurement and to propose better ways for optical measurement and computational modelling. The project aims to draft standards for the experimental validation of accident simulations.

While best practice guides exist for numerical modelling and static measurements of stress and strain, there are no international standards for analysing data from dynamic experiments. This approach is necessary to validate numerical results in stress, vibration and impact response, i.e. to correlate finite element results with experimental observations.

The Advise team includes experts from research laboratories, universities, instrument suppliers, and companies from the aerospace and automotive industry. Such a multifaceted group will be able to shed light on different aspects of measuring deformation and strain accurately. Once Advise completes its mandate, it will disseminate standardised procedures that allow safety levels to be defined in a much more accurate way. The information has strong potential in raising safety standards and saving lives, particularly in transport and industry.