Steffen Brier
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Numerical model for the identification of the convective heat transfer coefficient in cryogenic nitrogen cooling Open
Calculation of the convective heat transfer coefficient is challenging, especially for asymmetric boundary conditions, due to spatial variability. Numerical procedures are established methods to solve the parabolic heat equation. The solut…
View article: Numerical model for the identification of the convective heat transfer coefficient in cryogenic nitrogen cooling
Numerical model for the identification of the convective heat transfer coefficient in cryogenic nitrogen cooling Open
Calculation of the convective heat transfer coefficient is challenging, especially for asymmetric boundary conditions, due to spatial variability. Numerical procedures are established methods to solve the parabolic heat equation. The solut…
View article: Coupled CFD model of tool environment and workspace to determine the convective heat transfer in jet cooling of milling processes in machine tools
Coupled CFD model of tool environment and workspace to determine the convective heat transfer in jet cooling of milling processes in machine tools Open
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Investigation of Tool Cooling and Heat Transfer Using Computational Fluid Dynamics Simulations Open
Thermal errors remain one of the biggest challenges for the precision of cutting machine tools. Aside from optimizations in the machine tool design and behaviour, optimal cutting process parameters and targeted usage of cutting fluid or al…
View article: Coupled fluid-structure-interaction simulation approach for correction of the thermal tool elongation to improve the milling precision
Coupled fluid-structure-interaction simulation approach for correction of the thermal tool elongation to improve the milling precision Open
During milling operation, the position of the tool centre point (TCP) is affected by structural displacements, which are caused by force loads and heat input inside the machine as well as machining induced thermal loads. These thermal load…
Crystallisation Dynamics in Large-Scale Extrusion Additive Manufacturing: An Analysis with and without Temperature Modification Open
Large-Scale Material Extrusion (LS-MEX) is increasingly being used in small-scale production and prototyping due to its ability to create components in new temporal and spatial dimensions. However, the use of this manufacturing process pos…
View article: UNIDIRECTIONAL COUPLED FINITE ELEMENT SIMULATION OF THERMOELASTIC TCP-DISPLACEMENT THROUGH MILLING PROCESS CAUSED HEAT LOAD
UNIDIRECTIONAL COUPLED FINITE ELEMENT SIMULATION OF THERMOELASTIC TCP-DISPLACEMENT THROUGH MILLING PROCESS CAUSED HEAT LOAD Open
The paper presents a numerical simulation of thermal induced tool displacement during milling oper-ation. An unidirectional finite element model is developed which consists of two sections. A CFX model and a thermal transient model. With t…