(by Concre3DLab Ghent)
Simulation of 3D concrete printing
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Concre3DLab focusses on the 3D printing of concrete structures. On this page several plug-ins will be shared to aid in the design and manufacturing of concrete prints. 

Apps that are currently being developed are:

VoxelPrint: a Grasshopper plug-in that can be used to construct simulation files, designed specifically for concrete 3D printing applications. The plug-in can voxelize any three-dimensional shape into a set of identical finite elements and produce ready-to-use Input files for simulation in ABAQUS. The main contribution of this plug-in is providing an extensive, yet easy-to-use plugin to be used by both non-experts (e.g. architects and designers that are familiar with the parametric toolbox that is provided by Grasshopper) and more advanced users (that can experiment with the broad range of input parameters in an attempt to optimize their print design). The core component generates .INP files for ABAQUS; and is based on state-of-the art numerical methods for simulation of concrete printing.

License: The developed Grasshopper plug-in ‘VoxelPrint’ is freely available for educational and academic use. Please contact us for information about commercial use of ‘VoxelPrint’.

CobraPrint: a Grasshopper plug-in that allows for the creation of finite element models without any prior knowledge of numerical modelling being required. In contrast to VoxelPrint, a structured mesh is generated by sweeping a cross-section of the printed concrete layer along the print path. The plug-in was evaluated and validated based on experimental and numerical results from literature. The main advantage of CobraPrint is the possibility to add contact-based interactions between layers. Also, a dynamic analysis is used with numerical damping which smoothens the analysis. A user subroutine URDFIL can be added to monitor the deformations of the model and stop the analysis when a predefined threshold is reached.

Publications: Conference paper voxelprint & cobraprint  | Journal paper VoxelPrint (in review) | Journal paper CobraPrint (submitted)

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