60 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas de Universität Bremen Mon, 13 Apr 2026 13:55:55 +0200 Mon, 13 Apr 2026 13:55:55 +0200 Universität Bremen content-539690 Thu, 17 Aug 2023 15:49:55 +0200 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539690 Content content-539692 Fri, 06 Mar 2026 11:38:11 +0100 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539692 <p>The goal of this project is to develop and apply a computational approach to the modeling of grain structure evolution during additive manufacturing of aluminum specimens (ISEMP), as well as to simulate their deformation behavior with an explicit account of the microstructure (ISPMS). The specimens are produced using powder-bed laser beam melting at varied process parameters. On the mesoscopic scale, the developed methodology accounts for the mechanisms of microstructural development and thermal processes during additive manufacturing. The nature and causes of grain structure evolution in aluminum alloy specimens are examined using the developed cellular automata-finite difference (CAFD) technique.</p> Content content-539695 Thu, 17 Aug 2023 15:54:04 +0200 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539695 <p>The 3D CA simulation package incorporates the governing phenomena to simulate microstructural evolution during metal additive manufacturing. It is optimized for efficient simulations including several hatches and layers ( > 1 mm<sup>3</sup>)</p> Content content-539698 Thu, 17 Aug 2023 15:54:50 +0200 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539698 <p>Fusion boundary nucleation: the integration of physics-based particle evolution and nucleation models into the cellular automata simulation of solidification is necessary for prediction of grain structure and texture in aluminum alloys such as AlSi10Mg and Scalmalloy<sup>®</sup>. </p> Content content-539699 Thu, 17 Aug 2023 15:55:52 +0200 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539699 <p>Multiscale thermal analyses integrate inherent preheating from prior hatches as well as more realistic boundary conditions. Furthermore, a full-coupled thermal-solidification analysis is used, ensuring a proper release of latent heat of fusion based on non-equilibrium solidification conditions.</p> Content content-539700 Thu, 17 Aug 2023 15:57:07 +0200 https://www.uni-bremen.de/bccms/isemp/forschungblind/projekte/compas#c539700 <p>The simulations successfully reproduce the observed microstructural characteristics:</p> <ul> <li>Fusion boundary nucleation in both alloys</li> <li>Epitaxial growth at the melt pool bottom of AlSi10Mg</li> <li>Texture component of <001> || build-direction in columnar grains</li> </ul> Content