Andreas Naumann
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Data Scaling Laws for End-to-End Autonomous Driving Open
Autonomous vehicle (AV) stacks have traditionally relied on decomposed approaches, with separate modules handling perception, prediction, and planning. However, this design introduces information loss during inter-module communication, inc…
Matrices for a simplified machine tool model Open
This dataset contains matrices for a numerical thermal model of a simplified 3-axis machine tool. For more information see the description in the MOR Wiki.
Matrices for a simplified machine tool model Open
This dataset contains matrices for a numerical thermal model of a simplified 3-axis machine tool. For more information see the description in the MOR Wiki.
Uncertainty Propagation of Initial Conditions in Thermal Models Open
The operation of machine tools often demands a highly accurate knowledge of the tool center point's (TCP) position. The displacement of the TCP over time can be inferred from thermal models, which comprise a set of geometrically coupled he…
Hybrid Thermal Error Compensation Combining Integrated Deformation Sensor and Regression Analysis Based Models for Complex Machine Tool Designs Open
Thermal errors remain the dominant sources of positioning inaccuracies in machine tools. Various methods of reducing them have already been developed, ranging from cooling and air conditioning strategies, thermally optimized machine tool d…
Advanced open source data formats for geometrically and physically coupled systems Open
Numerical calculations based on models are nowadays standard tools in all engineering disciplines. The tools, which faciliate the modeling, generally include all tasks in an engineering workflow. These tasks range from simple model descrip…
Advanced open source data formats for geometrically and physically coupled systems Open
Numerical calculations based on models are nowadays standard tools in all engineering disciplines. The tools, which faciliate the modeling, generally include all tasks in an engineering workflow. These tasks range from simple model descrip…
Advanced open source data formats for geometrically and physically coupled systems - examples Open
Some model files to describe a geometrically and physically coupled PDE and a ODE system, arising from discretization in space. The files correspond to: a simplified two component problem with coupling and an FMU in withFMU.json the corres…
Advanced open source data formats for geometrically and physically coupled systems - examples Open
Some model files to describe a geometrically and physically coupled PDE and a ODE system, arising from discretization in space. The files correspond to: a simplified two component problem with coupling and an FMU in withFMU.json the corres…
Transorbital embolization of cavernous sinus dural arterio-venous malformations with surgical exposure and catheterization of the superior ophthalmic vein Open
Purpose Cavernous sinus dural arterio-venous malformations (dAVF) represent a pathologic connection between branches of the internal and/or external carotid artery and the cavernous sinus. Standard endovascular approaches for dAVF treatmen…
Optimal sensor placement for stochastic sources in machine tools Open
Accuracy requirements for machine tools demand an accurate positioning of the tool center point. Due to the heat sources, for example the friction and heat loss of motors, a machine can undergo complicated deformations during operation. Wh…
Building models for coupled thermo elastic problems in different software architectures using a new model exchange format Open
To reduce the energy consumption of machine tools while preserving the productivity and quality, the deformation caused by thermal loads must be taken into account. Two approaches to reach this goal are the integration of model predictive …
OPTIMAL POSITIONING METHODS OF INTEGRAL DEFORMATION SENSORS – EXPERT KNOWLEDGE VERSUS MATHEMATICAL OPTIMIZATION Open
Up to 75 % of the overall work piece error can be caused by the thermo-elastic behavior of the machine tool. Therefore, correction methods based on machine-integrated sensors were intensively researched during the last years, in order to d…
MODEL ORDER REDUCTION METHODS FOR COUPLED MACHINE TOOL MODELS Open
Thermal effects are the most dominant source for displacements in machine tools and thus work-piece inaccuracies during the manufacturing process. A promising strategy to meet the ever-increasing accuracy requirements is the use of predict…
Optimal Sensor Placement for Thermo‐Elastic Coupled Machine Models Open
Accuracy requirements for machine tools demand an accurate positioning of the tool center point. Due to the heat sources, for example the friction and heat loss of motors, a machine can undergo complicated deformations during operation. Wh…
Parallel Computing in Automation of Decoupled Fluid-Thermostructural Simulation Approach Open
Decoupling approach presents a novel solution/alternative to the highly time-consuming fluid-thermal-structural simulation procedures when thermal effects and resultant displacements on machine tools are analyzed. Using high dimensional Ch…
Head injury caused by a nail gun Open
Accidents in the domestic and professional environment can lead to life-threatening traumata in the ENT region. Here we report a case of a complex trauma induced by a nail gun. A 45 y.o. male patient presented in the trauma center of the d…
Multirate finite step methods with varying step sizes Open
Many partial differential equations consist of slow and fast scales. Often, the right hand side of semidiscretized PDEs can be split additively in corresponding fast and slow parts. Many methods utilise the additive splitting of these equa…
Multirate finite step methods for linear acoustics Open
Many processes contain phenomena on different time scales, leading to model equations with fast and small parts. There are several approaches to solve these equations, like additive Runge Kutta methods or multirate infinitesimal steps meth…