IdeMaS - A Project Supported by MIT within the FV-Trio Program

IdeMaS - Identification of High Performance Cementitious Composites Coefficients

IdeMaS -   the "FV-Trio" Program of Applied Research and Experimental Development of the Ministry of Industry and Trade of the Czech Republic  

Project ID: FV30244

Duration: 01/2018 - 12/2020

Main Partner: Červenka Consulting s.r.o. – Responsible: Ing. Radomír Pukl, CSc.

Partner: VUT Brno – Responsible: doc. Ing. David Lehký, Ph.D.

The aim of the project was to develop methods and software tools for parameter identification of high performance cementitious composites for the purpose of advanced assessment of their fracture–mechanical properties and subsequent numerical simulations of components/structures made of these materials. Their aim is to deepen knowledge about the complexity of the behavior of this advanced and progressive composite material especially in relation to its resistance to crack propagation. The obtained knowledge is a prerequisite for efficient design of this composite andthe consequent expansion of its applicability for the increase of the sustainability of constructed elements, structures and buildings. The proposed methodology and software will be based on experimental and computational methods falling within the field of fracture mechanics, soft computing and reliability theory.

Three programs based on artificial neural networks and advanced approximation methods were developed: FRCID-4PB (see program screen shots in the figures below) for identification of tensile fracture parameters from the four-point bending test, FRCID-S for identification material parameters from a shear test, and APIS for sensitivity analysis and identification of appropriate parameters for the numerical material model from arbitrary laboratory test or structural measurement. The ANN-based programs offer direct transfer of the identified material model data into ATENA software for the nonlinear finite element analysis. These newly developed programs will be gradually integrated into the ATENA / SARA program system, and they will be available for customers in order to support advanced analysis of structures made of non-traditional cementitious building materials such as green concrete, fibre concrete, high performance concrete or UHPFRC.

Conference papers:

PUKL, R., LEHKÝ D., NOVÁK, D. 2018. Towards nonlinear reliability assessment of concrete transport structures. In: IABSE Conference – Engineering the Developing World, Kuala Lumpur, Malaysia.

ŠIMONOVÁ, H., LIPOWCZAN, M., LEHKÝ, D., KUCHARCZYKOVÁ, B., KERŠNER, Z. 2018. Identification of mechanical fracture parameters statistics from fracture tests of geopolymer mortars. In: The 16th International Probabilistic Workshop (IPW2018), Vienna, Austria, 138 (5 pages), eISSN 1437-1006.

LEHKÝ, D., LIPOWCZAN, M., ŠIMONOVÁ, H., KERŠNER, Z. 2019. A neural network ensemble for the identification of mechanical fracture parameters of fine-grained brittle matrix composites. In: The 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-X), G. Pijaudier-Cabot, P. Grassl and C. La Borderie (Eds), Bayonne, France, doi: 10.21012/FC10.234717.

PUKL, R., LEHKÝ, D., LIPOWCZAN, M., NOVÁK, D. 2019. Material parameters for computer analysis of fibre reinforced concrete structures. In: The 10th International Conference Fibre Concrete 2019 (FC 2019), Prague, Czech Republic, IOP Conf. Series: Materials Science and Engineering, 596 (1), 012008, ISSN 1757-8981 (print), 1757-899X (online), doi: 10.1088/1757-899X/596/1/012008.

NOVÁK, D., LEHKÝ, D., PUKL, R. 2019. Fiber-reinforced cementitious composite: Sensitivity analysis and parameters identification. In: 31st Assembly of Advanced Material Congress, Orlando, FL, USA, Extended abstract, ISBN: 978-91-88252-23-4, doi: 10.5185/AMC31.

NOVÁK, D., LEHKÝ, D., PUKL, R. 2020. Fiber-reinforced cementitious composite: sensitivity analysis and parameter identification. Advanced Material Letters, 2020, 11(3), 20031488, 1–5, ISSN: 0976-3961, doi: 10.5185/amlett.2020.031488.

LEHKÝ, D., LIPOWCZAN, M., NOVÁK, D., PUKL, R., HAFEZOLGHORANI, M. 2020. Experimental/computational-based determination of material parameters for nonlinear simulation of UHPFRC. In: P. Serna et al. (Eds.) Fibre Reinforced Concrete: Improvements and Innovations (BEFIB 2020 online), Barcelona, Spain, RILEM Bookseries 30, Springer, Cham, pp. 527–535, ISBN 978-3-030-58481-8, ISSN 2211-0844, doi: 10.1007/978-3-030-58482-5_48, online.