Mineral-bonded composites
for enhanced structural impact safety

Mineral-bonded composites
for enhanced structural impact safety

Mineral-bonded composites
for enhanced structural
impact safety

B3/II Mesomechanical modelling of hybrid reinforced concrete structures at impact loading

The fracture behaviour of fiber-reinforced concrete under impact load is strongly dependent on the meso-structure of the composite. The nucleation and the growth of microcracks up to the size of a macrocrack is influenced by the embedded fibers as well as the meso-structure of the concrete. In addition, under highly dynamic load, on the mesoscale waves propagate and reflect leading to complex wave patterns that have a significant influence on the fracture behaviour. To be able to predict the macroscopic failure of fiber-reinforced concrete structures under impact loads, multiscale simulations are necessary.
Sketch of the multiscale projection method

Sketch of the multiscale projection method

Within this project the multiscale projection method (MPM) in combination with the XFEM are extended for highly dynamic loads to accurately simulate the crack nucleation and propagation behaviour on the mesoscale as well as on the macroscale. The goal is to make predictions about the quality and the properties of different textile and fiber-reinforcements regarding their impact safety. The extension of the MPM requires an additional projection of the inertia terms between scales and an investigation of dynamic effects along the boundary of the fine scale domain. The validation of the results is planned in cooperation with doctoral candidates of other research training group projects.

Contributors

© Tin Trong Dinh

Doctoral Researcher
(2020-2023)

Dipl.-Ing. Julien Stöcker

Contact

Institute of Structural Analysis

TU Dresden
Georg-Schumann-Straße 7
01187 Dresden
Germany

Principal Investigator

Univ.-Prof. Dr.-Ing. habil. Michael Kaliske

Contact

Institute of Construction Materials

Von-Mises-Bau (VMB), Room 101A Georg-Schumann-Straße 7
01187 Dresden
Germany

in cooperation with

Prof. Dr.-Ing. Stefan Löhnert

Contact

Institute of Mechanics and Shell Structures

TU Dresden, Faculty of Civil Engineering, 3rd floor, room 03-017
August-Bebel-Straße 30
01219 Dresden
Germany

in cooperation with

Univ.-Prof. Dr.-Ing. habil. Dipl.-Wirt. Ing. Chokri Cherif

Contact

Institute of Textile Machinery and High
Performance Material Technology (ITM)

Hohe Straße 6, Room 138
01069 Dresden
Germany