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Logo: Institut für Kontinuumsmechanik/Leibniz Universität Hannover
Logo Leibniz Universität Hannover
Logo: Institut für Kontinuumsmechanik/Leibniz Universität Hannover
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Additive Manufacturing: Ensuring High Quality of 3D-Printed Parts using Computational Approaches

Project coordinators: Christian Weißenfels, Peter Wriggers

Additive Manufacturing (AM) technologies have proven to be very promising due to their ability in fabricating parts in complex shapes with tailored physical properties. This enables many new possibilities to design and manufacture optimal patient-specific implants or new products for aerospace and automotive industries which increase safety together with a reduction of pollutant emissions.

However, the uncertainty in the quality of the final printed parts mainly hinders the wide industrialization of AM technologies. More than 100 parameters affect the quality making it difficult or mostly nearly impossible to find the best setup to fabricate the product with the desired properties.

Computational approaches are ideal for giving insights into the physical mechanism of the whole printing process. The influence of each process parameter on the quality of the final part can be individually analyzed in detail. If high fidelity computational models of this process are available, simulation software can be integrated into AM printers making a new generation of Advanced Additive Manufacturing possible.

To fully understand the physical mechanism with the help of simulation tools the fusion of material has to be accurately modeled. This process involves large deformations and intrinsic discontinuities. Hence meshfree methods are ideal solution schemes for the simulation of AM processes.

Additive Manufacturing

ISPH-based Simulation of the Selective Laser Melting Process

Bild zum Projekt ISPH-based Simulation of the Selective Laser Melting Process

Leitung:

Christian Weißenfels, Peter Wriggers

Bearbeitung:

M.Sc. Jan-Philipp Fürstenau

Kurzbeschreibung:

Development of a thermo-mechanical model for the simulation of the SLM process.

 

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Process Simulation for Selective Laser Melting

Bild zum Projekt Process Simulation for Selective Laser Melting

Leitung:

Christian Weißenfels, Peter Wriggers

Bearbeitung:

M.Sc. Henning Wessels

Kurzbeschreibung:

A phase change model for solution with the meshfree Galerkin OTM method is developed.

 

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3D-Printing of Curing Polymers

Bild zum Projekt 3D-Printing of Curing Polymers

Leitung:

Christian Weißenfels, Peter Wriggers

Bearbeitung:

M.Sc. Philipp Hartmann

Förderung durch:

DFG (Graduiertenkolleg 1627)

Kurzbeschreibung:

3D-Printing simulations of curing polymers within the concept of Peridynamics are developed.

 

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High Performance Computing of Stereolithography Processes

 

Bearbeitung:

M.Sc. Sandeep Kumar

 

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