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Article
Open AccessA macroscopic approach for stress-driven anisotropic growth in bioengineered soft tissues
The simulation of growth processes within soft biological tissues is of utmost importance for many applications in the medical sector. Within this contribution, we propose a new macroscopic approach for modell...
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Chapter
Hybrid Discretizations in Solid Mechanics for Non-linear and Non-smooth Problems
We introduce novel hybrid discontinuous Galerkin methods for applications in solid mechanics. Different methods are introduced and numerically evaluated for several benchmark scenarios which show that our new ...
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Article
Open AccessBovine Sperm Sexing Alters Sperm Morphokinetics and Subsequent Early Embryonic Development
In artificial insemination the use of sex-sorted bovine sperm results in reduced conception, the causes of which are only partly understood. Therefore, we set out to investigate the effects of sexing on bovine...
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Article
Influence of storage on the quality of conventional CT and µCT-imaging for the middle and inner cat ear
The aim of this study was to analyze whether different fixation methods such as freezing or formaldehyde storage for different periods of time have an influence on the recognition of anatomical relevant struct...
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Article
Open AccessUnderlying Mechanisms for Develo** Process Signatures in Manufacturing
The concept of Process Signatures allows the reliable and knowledge-based prediction of material modifications (e.g., changes of hardness, residual stress, microstructure and chemical composition) researchers...
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Article
Open AccessEvaluation of arterial digital blood flow using Doppler ultrasonography in healthy dairy cows
Local circulatory disturbances have been implicated in the development of foot disorders in cattle. The goals of this study were to evaluate the suitability of the interdigital artery in the pastern region in ...
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Article
Finite element analysis of combined forming processes by means of rate dependent ductile damage modelling
Sheet metal forming is an inherent part of todays production industry. A major goal is to increase the forming limits of classical deep-drawing processes. One possibility to achieve that is to combine the conv...
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Article
Design studies of rocket engine cooling structures for fatigue experiments
The fatigue life of a regeneratively cooled rocket engine is strongly controlled by the aerothermodynamic cyclic load of the combustion chamber structure. Experiments on a subscale rectangular rocket combustio...
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Article
Experimental and Numerical Study of Paperboard Interface Properties
Laminated paperboard is widely used in packaging products. Interface delamination plays a crucial role in converting paperboard to a carton through the creasing and folding process. Thus, the aim of this study...
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Article
Strain and stress concentrations in elastomers at finite deformations: effects of strain-induced crystallization, filler reinforcement, and deformation rate
Strain and stress concentrations are studied for elastomers at finite deformations. Effects of strain-induced crystallization, filler reinforcement and deformation rate are also investigated, and micromechanic...
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Chapter and Conference Paper
Increase of the Dimensional Accuracy of Sheet Metal Parts Utilizing a Model-Based Path Planning for Robot-Based Incremental Forming
The principle of robot-based incremental sheet metal forming is based on flexible sha** by means of a freely programmable path-synchronous movement of two tools, which are operated by two industrial robots. ...
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Article
Modelling and simulation of process-integrated powder coating by radial axial rolling of rings
In this paper, we present finite element (FE) process simulations of a new production method used to coat ring-shaped work pieces with functional layers. Similarly to the conventionally applied hot isostatic p...
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Article
A large-deformation multiplicative framework for anisotropic elastoplastic materialswith application to sheet metal forming
In this work, we discuss the derivation and the numerical implementation of a finite strain material model for plastic anisotropy and nonlinear kinematic and isotropic hardening. The model is derived in a ther...
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Article
A new continuum shell finite element for sheet metal forming applications
In the present paper the performance of a newly developed reduced integration solid-shell element based on reduced integration with hourglass stabilization is studied in the field of sheet metal forming. The e...
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Chapter and Conference Paper
Mechanical properties of blood clots - A new test method -
A blood clot needs to have the right degree of mechanical, chemical and biological properties to stem the flow of blood and yet to be suitable for lytic enzymes or mechanical thrombectomy so as not to form a t...
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Article
On the implementation of the EAS and ANS concept into a reduced integration continuum shell element and applications to sheet forming
This contribution deals with the application of a new solid-shell finite element based on reduced integration with hourglass stabilization in the field of sheet metal forming. The formulation includes the enha...
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Article
Anisotropic finite plasticity based on structural tensors—different strategies and application to forming simulations
The accuracry of sheet metal forming crucially relies on the quality of the material description which involves the modelling of large strains, elastic and plastic anisotropy as well as different kinds of hard...
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Article
Open AccessEstablishment of a specific Real-time RT-PCR protocol to detect human leptin receptor isoforms
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Article
Modelling and Simulation of 3D electromagnetic metal forming processes
The purpose of this work is the formulation of a thermo-magneto-mechanical multifield model and presentation of the numerical strategies applied. In particular, this model is used to simulate electromagnetic s...
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Article
Anisotropic finite plasticity with combined hardening and application to sheet metal forming
In this work, we discuss a finite strain constitutivemodel combining both nonlinear isotropic and nonlinear kinematic hardening. The kinematic hardening component represents a continuum extension of the classi...
