DEM simulation of concrete fracture and crack evolution

Beckmann, Birgit; Schicktanz, Kai; Reischl, Dirk S.; Curbach, Manfred

doi:10.1002/suco.201100036

Cited by 24 publications

(18 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that -as in real laboratory experimentsthe crack patterns are phenomenologically similar, but differ in details. While in [2] the comparison of simulation results to the experimental results is shown in detail, the focus of this paper is laid on description of theoretical background including statistical aspects. Using statistical variations of geometrical and material properties, it is shown that even an elementary statistical approach leads to the evolution of statistically varying crack patterns.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The Discrete Element Method (DEM) is used in this simulation. While the basic concept of the DEM -originating from Cundall and Strack [1] -as well as several single aspects such as contact approach are taken from the literature (see [2] for an overview), this simulation employs a combination of essential elements such as a contact approach including an overlap area, detection of new particle contacts during the simulation instead of neighbouring lists and particles with arbitrarily polygonal shape and furthermore the inclusion of statistically varying properties.…”

Section: Simulationmentioning

confidence: 99%

“…Cohesion forces can optionally be included to the model, but their inclusion is not necessarily required. More detailed information regarding the generation of the concrete particles and of the optional cohesion linkages of the presented simulation are given in [6], for example. Due to the polygonal particle shape, the simulation is limited to only two dimensions up to now, although the simulation is principally designed with three dimensions, of course.…”

Section: Simulationmentioning

confidence: 99%

“…The transfer of compressive force is simulated in that way. More details are given in [2]. Optionally, the transfer of tensile forces or cohesion can be added (see section 3.2).…”

Section: Mechanical Model 31 Generalmentioning

confidence: 99%

“…Crack patterns of four samples after compression test [15] body is not continuous any more, above a loading intensity of about 80 %. This is to be kept in mind when applying averaging algorithms such as calculation of stresses and strains (see also [2]).…”

Section: Figmentioning

confidence: 99%

See 4 more Smart Citations

Discrete Element simulation of concrete fracture and crack evolution

Beckmann

Schicktanz

Curbach

2018

Beton und Stahlbetonbau

Self Cite

View full text Add to dashboard Cite

Concrete fracture phenomena and their statistically varying character are investigated in this work. It is the complex processes of failure mechanisms, crack propagation and damage evolution which are specifically investigated rather than to reach a certain maximum load or to investigate the concrete behaviour within a range of safe working loads. In order to go into this matter, a two‐dimensional numerical simulation based on the Discrete Element Method (DEM) is used for the analysis of concrete behaviour under compression load. Crack patterns, crack initiation and damage evolution are analysed. The cracks are discrete just as in real laboratory experiments. The cracks arise due to the interaction of the concrete particle elements and without the predefinition of any crack zones or crack elements. The numerically generated concrete specimens differ in statistically varying positions of the single particles. This corresponds to different specimens of the same batch in real laboratory experiments. In the simulation, different particle generations with the same parameters are calculated. Furthermore, exactly the same particle generations are calculated until ultimate load and failure several times – under lower and under higher loading velocities.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Section: Simulationmentioning

confidence: 99%

Section: Simulationmentioning

confidence: 99%

“…The transfer of compressive force is simulated in that way. More details are given in [2]. Optionally, the transfer of tensile forces or cohesion can be added (see section 3.2).…”

Section: Mechanical Model 31 Generalmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

See 3 more Smart Citations

Discrete Element simulation of concrete fracture and crack evolution

Beckmann

Schicktanz

Curbach

2018

Beton und Stahlbetonbau

Self Cite

View full text Add to dashboard Cite

show abstract

Development and application of a new discrete element into simulation of nonlinear behavior of concrete

Mehrpay

Wang

Ueda

2019

Structural Concrete

View full text Add to dashboard Cite

A new element based on the concept of Rigid Body Spring Model (RBSM) that inherently incorporates Poisson effect is developed and utilized to simulate the nonlinear behavior of concrete. Initially, the behavior of element in linear state is successfully verified. For the nonlinear applications in simulation of concrete, nonlinear material models are implemented based on mesoscale modeling technique that does not suffer from complexity of macroscopic models based on volumetric and deviatoric stress and strain tensors separation. Beside capability of incorporating the Poisson's ratio of the material, with the new material models implemented, the new element can represent the complex behavior of concrete.The uniaxial compressive and tensile test beside splitting tensile test on concrete specimen were simulated successfully and similar cracking patterns to the experiments were observed in the simulations. K E Y W O R D Sconcrete simulation, discrete model, mesoscopic, Poisson's ratio, RBSM

show abstract

Mesoscale fracture analysis of recycled aggregate concrete based on digital image processing technique

Peng

Kamel

Wang

2020

Structural Concrete

View full text Add to dashboard Cite

Since recycled aggregate concrete (RAC) is valuable for green concrete and global sustainability, it has attracted many numerical research studies as a five‐phase material in mesolevel. In this study, the digital image processing (DIP) technique is used to obtain the real aggregate and mortar distribution of recycled concrete specimens. By applying the DIP MATLAB model, the real mesoheterogeneity of RAC is well represented. Based on the base force element method (BFEM), a mesomechanical model is constructed to simulate the uniaxial tension and compression tests of recycled concrete specimens subjected to displacement loads. The damage and the cracking mechanisms of RAC are analyzed in the mesolevel. Moreover, the failure process and the failure mode are investigated. Results indicate the nonlinearity deformation, stress redistribution, and cracks propagation of RAC. The stress–strain curve, fracture energy, and fracture distribution are also figured. The comparative analysis between the simulation and the experimental results of in situ RAC samples shows the applicability of the model; therefore, the failure mechanism is revealed. It also extends the application of the BFEM in the field of failure mechanism analysis of RAC as a heterogeneous composite material.

show abstract

DEM simulation of concrete fracture and crack evolution

Cited by 24 publications

References 39 publications

Discrete Element simulation of concrete fracture and crack evolution

Discrete Element simulation of concrete fracture and crack evolution

Development and application of a new discrete element into simulation of nonlinear behavior of concrete

Mesoscale fracture analysis of recycled aggregate concrete based on digital image processing technique

Contact Info

Product

Resources

About