DTU, Department of Civil and Mechanical Engineering, the Section for Manufacturing Engineering invites applications for a PhD position (3 years) in the field of multi-scale and multi-physics simulation of the process-microstructure-property-performance chain for the metal additive manufacturing process.
The project is part of a Villum Investigator grant titled “Microstructural engineering of additive manufactured metals – MicroAM” funded by the VILLUM FONDEN. The overall aim of the project is to introduce microstructural engineering to the field of additive manufacturing (AM) of metals. This is to set the stage for optimizing metals microstructures in-situ during the AM process as well as ex-situ during post-AM treatments and enable predictions of the microstructural evolution, and thus changes in properties, while AM components are in use.
Responsibilities and qualifications
If you are you interested in numerical simulations of advanced manufacturing processes which involve several physical phenomena and subsequent cross-linking of these simulations over different length-scales, perhaps you are our new PhD student.
By developing advanced computational solid mechanics (CSM) and computational fluid mechanics (CFD) simulations at micro-, deposition- and sample-scale, the aim is to predict then the impact of an external load during real-life loading scenarios at macro-/sample-scale on the porosity and microstructural evolution at deposition- and micro-scale for additively manufactured metallic components by cross-linking these models via material and process multi-scaling.
The project entails the development and validation of a long list of simulations, including microstructural (such as cellular automata) and deposition-scale simulations, such as thermo-hydraulic and thermo-elasto-plastic simulations in the vicinity of the melt pool which focus on the thermo-hydraulic conditions to track the potential formation of porosities and the residual stress formation during the course of the process, respectively. Crystal plasticity simulations will be performed on statistical representative volume elements (S-RVE) found via experiments and simulations at micro- and deposition-scales (which involve pores and grain morphologies). Then the final aim is to study the impact of an external load or disturbance occurring at macro- or sample-scale, on the grains’ deformation/transformation, porosities and stress evolution within S-RVEs via implementing appropriate material and process multi-scaling techniques. Validation will be through 4D experiments, performed by colleagues in the project.
You will work in close collaboration with a group of senior scientists, technicians as well as Post Docs and PhDs all engaged in the Villum Investigator project MicroAM. A 3–6-month foreign stay will be part of the PhD project.
You must have a two-year master’s degree (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master’s degree.
To apply, please read the full job advertisement, by clicking the ‘Apply’ button.