% Encoding: UTF-8 @COMMENT{BibTeX export based on data in FAU CRIS: https://cris.fau.de/} @COMMENT{For any questions please write to cris-support@fau.de} @inproceedings{faucris.110538824, abstract = {The design of composite structures is a big challenge because a lot of different and mutually dependent parameters like the fiber orientation, the stacking sequence or the layer thicknesses have to be defined. Additionally, even small deviations of these parameters from the ideal can significantly reduce the mechanical properties of the composite part which makes the design of composite parts particularly challenging. Therefore, it is essential to use novel simulation tools and computational methods as soon as possible in the design process. However, many existing software tools are based on a sequence of complex optimization algorithms or are highly restricted, and therefore, not suitable for the early embodiment design of composite parts. Within the intended paper a novel simulation based design approach will be presented which offers a high freedom in design and is based on simple engineering considerations. The design approach can be divided into four different steps:
In the first step of the design approach the so called Modified Multi-Layer CAIO method is used to compute the ideal fiber orientations and stresses for each load case in an iterative process. As input for this method a FE model for each load case with an arbitrary number of layers and fiber orientation is created and each model is solved separately. For each model the mean stress directions are computed and the elemental fiber orientations in the FE models are oriented in direction of the maximum mean stresses. These modified models are solved again and the process is repeated as long as there is a significant change in the mean stresses. Based on the results of the Modified Multi-Layer CAIO, the number of layers for each finite element as well as the needed fiber orientations can be computed.
However, since every element can have a different fiber orientation and number of layers, the computed laminate structure is not manufacturable. For this reason, a cluster algorithm is needed (step 2) to find areas with equal fiber orientation and, therefore, areas where patches could be placed. The basic principle of the cluster algorithm is to choose a first layer of an arbitrary starting element and compare the fiber orientations of this layer to all layers in the neighboring elements. If the comparison of the fiber orientations is positive the neighboring layer is added to the first cluster. For this grown cluster again all the neighboring elements are checked and the comparison process repeats until no new layer can be added to the existing cluster. In this case a new starting element is chosen and the procedure starts again to form a new cluster. In the end, the clusters are highlighted and a possible patch structure is shown which helps product developers to define a first laminate. However, the ideal stacking sequence as well as the thickness of each layer is still unknown at this stage. Therefore, steps three and four have to follow. In step three the stacking sequence is defined with the help of the stresses which were computed in step 1. The fiber orientations of the patches are compared to the mean stresses in each of the arbitrary layers and a value for the overlapping is computed in each position. The stacking sequence with the highest overall overlapping value is chosen. In the last step (step 4), a FE model is created with the computed stacking sequence and the thicknesses are defined with a simple genetic algorithm. }, author = {Klein, Daniel and Malezki, Waldemar and Wartzack, Sandro}, booktitle = {NAFEMS World Congress 2015, 21. - 24. Juni, San Diego, USA, NAFEMS World Congress}, date = {2015-06-21/2015-06-24}, faupublication = {yes}, keywords = {Composites, Leichtbau, Simulation}, note = {UnivIS-Import:2015-10-26:Pub.2015.tech.FT.FT-KLMEFK.acompu}, peerreviewed = {Yes}, title = {{A} computational design approach for composite structures at the early embodiment design stage}, url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641b05fb2603}, venue = {San Diego}, year = {2015} } @inproceedings{faucris.118389964, author = {Gruber, Georg and Klein, Daniel and Wartzack, Sandro}, booktitle = {8th European LS-DYNA Users Conference}, faupublication = {yes}, note = {UnivIS-Import:2015-04-16:Pub.2011.tech.FT.FT-KLMEFK.amodif{\_}7}, pages = {-}, title = {{A} modified approach for simulating complex compound structures within early design steps}, venue = {Strasbourg, Frankreich}, year = {2011} } @article{faucris.202418448, abstract = {Optimization specifically for fiber reinforced plastics (FRP) is becoming more and more important for creating high-quality composite structures. Yet, in spite of the increasing use of topology optimization (TO) within product development, specific TO methods for transversely isotropic materials like FRP are scarce in research and even more scarce in practical application. This is amongst other reasons caused by the challenge of simultaneous optimization of mutually dependent material distribution and fiber orientations, which poses an obstacle to established gradient-based optimization routines in terms of iterations (run time) and gradient formulation. Thus, based on bionic methods, an efficient, empirical optimization method is proposed to enable fast and FRP-suitable geometry propositions. Case studies show efficiency and effectiveness: the new approach offers very fast convergence; plus perceptible stiffness gains compared to established topology optimization for isotropic material}, author = {Völkl, Harald and Klein, Daniel and Franz, Michael and Wartzack, Sandro}, doi = {10.1016/j.compstruct.2018.07.079}, faupublication = {yes}, journal = {Composite Structures}, keywords = {Structural optimization Fiber-reinforced plastics Finite element analysis Bionics}, pages = {359-367}, peerreviewed = {Yes}, title = {{An} efficient bionic topology optimization method for transversely isotropic materials}, year = {2018} } @inproceedings{faucris.118284804, author = {Klein, Daniel and Witzgall, Christian and Wartzack, Sandro}, booktitle = {International Design Conference - DESIGN}, faupublication = {yes}, note = {UnivIS-Import:2015-04-16:Pub.2014.tech.FT.FT-KLMEFK.anovel}, pages = {1093-1104}, peerreviewed = {Yes}, title = {{A} novel approach for the evaluation of composite suitability of lightweight structures at early design stages}, url = {https://www.archiv.mfk.tf.fau.de?file=pubmfk{\_}5c38541cca778}, venue = {Dubrovnik}, year = {2014} } @inproceedings{faucris.118505244, author = {Klein, Daniel and Wartzack, Sandro and Lindner, Christian}, booktitle = {Design for X. Beiträge zum 23. DfX-Symposium}, faupublication = {yes}, note = {UnivIS-Import:2015-04-16:Pub.2012.tech.FT.FT-KLMEFK.ansatz}, pages = {151-162}, peerreviewed = {Yes}, title = {{Ansatz} zur crashsicheren {Auslegung} von {Leichtbaukonstruktionen} unter besonderer {Berücksichtigung} der {Fügestellen}}, url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641bdf5d9e37}, venue = {Bamberg}, year = {2012} } @inproceedings{faucris.123655664, abstract = {The design of endless-fiber reinforced composites is a highly challenging task since the mechanical properties are highly anisotropic and several mutually dependent parameters have to be defined. Therefore product developers have to be supported through design approaches and methods to exploit the whole lightweight potential of this unique material. However, many existing design approaches and methods are restricted to simple geometries and load cases, cause high modelling and computation times or lead to an unstructured design process. For this reason a new design approach is introduced consisting of four consecutive steps. The advantages of this new approach are the resulting structured design process, the low modeling and computational effort and the applicability to arbitrary load cases. The single steps of the design approach as well as its possible results will be demonstrated with the help of the front wing connection of a race car.}, author = {Klein, Daniel and Völkl, Harald and Wartzack, Sandro}, booktitle = {Proceedings of the Seminar "Simulation of Composites - Ready for Industry 4.0"}, date = {2016-10-26/2016-10-27}, editor = {NAFEMS Deutschland}, faupublication = {yes}, keywords = {Leichtbau; Simulation; Konstruktion; Faserverbundwerkstoffe}, pages = {145 - 153}, peerreviewed = {No}, title = {{A} {Simulation}-{Based} {Design} {Approach} {For} {Endless}-{Fiber} {Reinforced} {Composite} {Structures}}, venue = {Hamburg}, year = {2016} } @article{faucris.118085484, abstract = {
},
author = {Klein, Daniel and Scheler, Kaja and Wartzack, Sandro},
booktitle = {kunststoffe + SIMULATION 2014},
date = {2015-04-08/2015-04-09},
faupublication = {yes},
keywords = {Leichtbau; Composites},
peerreviewed = {No},
title = {{Berechnung} beanspruchungsgerechter {Patch}-{Geometrien} für die {Auslegung} von {CFK}-{Strukturen} in den frühen {Phasen} der {Produktentwicklung}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641d209c31ad},
venue = {München},
year = {2014}
}
@article{faucris.110500984,
abstract = {Die Auslegung von Produkten aus faserverstärktem Kunststoff (FVK) stellt an Produktentwick-ler besonders hohe Anforderungen, denn nur wenn es gelingt, die Fasern richtig zu belasten, kann das Leichtbaupotential von FVK ausgenutzt werden. Dabei ist es zwingend erforderlich, dass bereits in den frühen Phasen der Produktentwicklung das Bauteildesign kritisch in Bezug auf dessen Eignung für FVK hinterfragt wird. Eignet sich ein Bauteil aufgrund seiner Geometrie oder der Belastungsart nicht, kann dies selbst durch die beste Auslegung und Simulation nicht mehr ausgeglichen werden.
In dem folgenden Beitrag wird ein erster Algorithmus vorgestellt, der es erlaubt, basierend auf einfachen FE-Simulationen mit isotropem Materialmodell, die Faserverbundeignung von Leichtbaustrukturen zu berechnen und zu visualisieren. Dazu werden über bewährte Theorien, wie etwa der klassischen Laminattheorie, Kriterien hergeleitet und diskutiert, die zusammen die Bewertung eines Bauteils zulassen. Ziel des Bewertungsalgorithmus ist es, zum einen eine Aussage über die generelle Eignung der Struktur für einen FVK zu geben und zum anderen auch Bereiche anzudeuten, die noch optimiert werden müssen. Am Ende des Beitrags wird gezeigt, dass so Verbesserungspotentiale abgeleitet werden können, die zu einer signifikanten Optimierung der Bauteileigenschaften führen.
Es ist an dieser Stelle unbedingt zu erwähnen, dass das Hauptaugenmerk dieses Beitrags auf endlos-kohlefaserverstärktem Kunststoff (CFK) liegt. Weite Teile des Beitrags können aber direkt auf viele unterschiedliche FVK übertragen werden.},
author = {Klein, Daniel and Witzgall, Christian and Wartzack, Sandro},
faupublication = {yes},
journal = {NAFEMS Online-Magazin},
note = {UnivIS-Import:2015-10-26:Pub.2014.tech.FT.FT-KLMEFK.bewert},
pages = {55-66},
peerreviewed = {No},
title = {{Bewertung} und {Optimierung} der {Faserverbundeignung} von {Leichtbaustrukturen} in den frühen {Phasen} der {Produktentwicklung}},
volume = {32},
year = {2014}
}
@inproceedings{faucris.118718644,
abstract = {The market for carbon fibers is forecast to experience a double-digit growth over the next years. The reason for this development can be found in the special characteristics of Carbon Fiber Reinforced Plastics (CFRP) like high stiffness and strength at very low weight which make this composite an ideal material for lightweight design. However, the design of parts made of CFRP is a tightrope walk between costs, mechanical characteristics and manufacturability for product developers. On the one hand, the mechanical properties are highly dependent on the ideal fiber orientation within the part and the unique material characteristics can only be exploited with a suitable fiber orientation, but on the other hand, the ideal fiber orientation is often not manufacturable or the required manufacturing technique is too expensive. Therefore, a novel algorithm to support product developers in finding a manufacturable fiber orientation or patch layout which is as close as possible to the ideal fiber orientation is introduced. This algorithm computes and highlights areas with constant fiber orientation (=cluster) based upon the ideal fiber alignment from the CAIO method. With the help of the visualization of the clusters, product developers can be supported in the decision for the best patch placement and geometry as well as in choosing the best manufacturing technique. It is important to point out that the algorithm is intended for endless fiber reinforced parts only.},
author = {Klein, Daniel and Scheler, Kaja and Wartzack, Sandro},
booktitle = {Proceedings of the 24th CIRP Design Conference 2014, Milano, Italy},
date = {2014-04-14/2014-04-16},
doi = {10.1016/j.procir.2014.03.133},
faupublication = {yes},
keywords = {Early design stages; Endless fibre reinforced composites; Lightweight design},
note = {UnivIS-Import:2015-04-16:Pub.2014.tech.FT.FT-KLMEFK.comput},
pages = {437-442},
peerreviewed = {Yes},
publisher = {Curran},
title = {{Computation} and {Visualization} of {Patch} {Geometries} for the {Design} of {Carbon} {Fiber} {Reinforced} {Parts} at {Early} {Design} {Stages}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641bd0a64731},
venue = {Mailand},
year = {2014}
}
@article{faucris.234693766,
abstract = {The computer aided internal optimisation (CAIO) method produces an
optimised fibre layout for parts made from fibre-reinforced plastics
(FRP), starting from an initial shell geometry and a given load case.
Its main principle is iterative reduction of shear stresses by aligning
fibre main axes with principal normal stress trajectories. Previous
contributions, ranging from CAIO’s introduction over testing to
extensions towards multi-layer FRP laminates, highlighted its
lightweight design potential. For its application to laminate design
approaches, alterations have been proposed; however, questions remain
open. These questions include which convergence criteria to use, how to
handle ambiguous principle normal stress trajectories, influence of
using multi-layer CAIO optimisation instead of the initial single-layer
CAIO and how dire consequences of slightly deviating fibre orientations
from the optimised trajectories are. These challenges are discussed in
depth and guidelines are given. This paper is an enhanced version of a
distinguished contribution at the first symposium ‘Lightweight Design in
Product Development’, Zurich (June 14–15, 2018},
author = {Völkl, Harald and Franz, Michael and Klein, Daniel and Wartzack, Sandro},
doi = {10.1017/dsj.2020.1},
faupublication = {yes},
journal = {Design Science},
keywords = {lightweight design; fibre trajectory optimisation; CAIO; fibre-reinforced plastics},
peerreviewed = {Yes},
title = {{Computer} {Aided} {Internal} {Optimisation} ({CAIO}) method for fibre trajectory optimisation: {A} deep dive to enhance applicability},
volume = {6},
year = {2020}
}
@inproceedings{faucris.237819809,
abstract = {To achieve the goal of simulating the structural behavior of parts made of short fiber reinforced polymers with satisfactory accuracy and justifiable modeling effort, a new approach adapted to the needs of the early design steps was developed at the Chair of Engineering Design (KTmfk). Hereby, the various effects of material behavior are modeled by overlapping two different material models in one finite element definition. The anisotropic material properties are determined by an injection molding simulation. The complexity of the resulting fiber distribution is reduced to just three values per finite element. The paper's focus is the introduction of an automated method supporting the determination of the numerical material parameter and a new tensor based method enabling the averaging of the complex orientation state. The benefits of the new methods and a validation are presented.},
author = {Gruber, Georg and Klein, Daniel and Ziegler, Philipp and Wartzack, Sandro},
booktitle = {NordDesign 2012 - Proceedings of the 9th NordDesign Conference},
date = {2012-08-22/2012-08-24},
editor = {Poul Kyvsgaard Hansen, John Rasmussen, Kaj A. Jorgensen, Christian Tollestrup},
faupublication = {yes},
isbn = {9788791831515},
keywords = {Early design steps; Fiber reinforced polymers; Lightweight design; Simulation},
note = {CRIS-Team Scopus Importer:2020-04-28},
peerreviewed = {unknown},
publisher = {Center for Industrial Production, Aalborg University and Design Society, University of Strathclyde},
title = {{Consideration} of anisotropic material properties in mechanical design within early design phases},
venue = {Aalborg},
year = {2012}
}
@inproceedings{faucris.118506564,
author = {Gruber, Georg and Klein, Daniel and Ziegler, Philipp and Wartzack, Sandro},
booktitle = {Proceedings of the 9th Norddesign},
date = {2012-08-22/2012-08-24},
faupublication = {yes},
note = {UnivIS-Import:2015-04-16:Pub.2012.tech.FT.FT-KLMEFK.consid{\_}2},
pages = {200-207},
peerreviewed = {Yes},
title = {{Consideration} of {Anisotropic} {Material} {Properties} in {Mechanical} {Design} within {Early} {Design} {Steps}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641b0ac2dbb7},
venue = {Aalborg},
year = {2012}
}
@inproceedings{faucris.122185404,
author = {Kellermeyer, Markus and Klein, Daniel and Wartzack, Sandro},
booktitle = {Proceedings of the 20th International Conference on Engineering Design (ICED15), Vol. 4: Design for X, 27.-30. Juli 2015, Mailand, 2015, S. 11-20.},
date = {2015-07-27/2015-07-30},
faupublication = {yes},
keywords = {Leichtbau, Composites, Simulation},
note = {UnivIS-Import:2015-10-26:Pub.2015.tech.FT.FT-KLMEFK.design{\_}9},
pages = {309-319},
peerreviewed = {Yes},
title = {{Designing} of hybrid joints at the early embodiment design stage},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641b105b9263},
venue = {Mailand},
year = {2015}
}
@article{faucris.107133884,
author = {Klein, Daniel and Gruber, Georg and Wartzack, Sandro},
faupublication = {yes},
journal = {Kunststoffe},
keywords = {Leichtbau, Composites, kurzfaserverstärkte Thermoplaste},
note = {UnivIS-Import:2015-10-26:Pub.2014.tech.FT.FT-KLMEFK.diecru},
pages = {170-174},
peerreviewed = {No},
title = {{Die} {Crux} der {Faserorientierung}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641b0078a894},
volume = {2014},
year = {2014}
}
@article{faucris.117522504,
abstract = {Micromotion between dental implant and bony socket may occur in immediate-loading scenarios. Excessive micromotion surpassing an estimated threshold of approximately 150 μm may result in fibrous encapsulation instead of osseointegration of the implant. As finite element analysis (FEA) has been applied in this field, it was the aim of this study to evaluate the effect of implant-related variables and modeling parameters on simulating micromotion phenomena. Three-dimensional FEA models representing a dental implant within a bony socket were constructed and used for evaluating micromotion (global displacement) and stress transfer (von Mises equivalent stress) at the implant-bone interface when static loads were applied. A parametric study was conducted altering implant geometry (cylinder, screw), direction of loading (axial, horizontal), healing status (immediate implant, osseointegrated implant), and contact type between implant and bone (friction free, friction, rigid). Adding threads to a cylindrically shaped implant as well as changing the contact type between implant and bone from friction free to rigid led to a reduction of implant displacement. On the other hand, reducing the elastic modulus of bone for simulating an immediate implant caused a substantial increase in displacement of the implant. Altering the direction of loading from axial to horizontal caused a change in loading patterns from uniform loading surrounding the whole implant to localized loading in the cervical area. Implant-related and bone-related factors determine the degree of micromotion of a dental implant during the healing phase, which should be considered when choosing a loading protocol.
},
author = {Winter, Werner and Klein, Daniel and Karl, Matthias},
doi = {10.1563/AAID-JOI-D-11-00221.},
faupublication = {yes},
journal = {The Journal of oral implantology},
keywords = {Simulation; Implantologie},
note = {UnivIS-Import:2015-03-09:Pub.2012.tech.FT.FT-TM.effect},
pages = {23-29},
peerreviewed = {unknown},
title = {{Effect} of model parameters on finite element analysis of micromotions in implant dentistry},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641c2c4ac2f8},
volume = {39},
year = {2013}
}
@inproceedings{faucris.121307384,
author = {Klein, Daniel and Caballero, Steffen and Wartzack, Sandro},
booktitle = {ANSYS Conference & 32. CADFEM Users' Meeting},
date = {2015-06-04/2015-06-06},
faupublication = {yes},
keywords = {Leichtbau; Composites; Simulation},
peerreviewed = {No},
title = {{Entwicklung} beanspruchungsgerechter {CFK}-{Laminate} in den frühen {Phasen} der {Produktentwicklung}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641d50e9a33d},
venue = {Nürnberg},
year = {2014}
}
@inproceedings{faucris.118260164,
abstract = {A Young’s Modulus of up to 100 GPa, high strength and low density are only a few features that make carbon fiber reinforced plastic (CFRP) an ideal material for lightweight constructions. But the potential of CFRP can only be exploited if the fibers are oriented correctly. It is shown in this article that a deviation of only 10° from the ideal fiber orientation leads to a decrease of nearly 40 % in relative stiffness. Furthermore analytical methods to compute the fiber orientation within lightweight structures are only appropriate for geometrically less complex structures. Therefore, two different theories to computationally determine the ideal fiber orientation within structures made of CFRP are introduced. The first one is the load path theory developed by KELLY who originally wanted to visualize load paths within structures and the other is the CAIO method which imitates the adaptive growth of trees. After a short comparison of these different theories with the help of Mohr’s circle the fiber orientation within a b-pillar is computed according to both theories and evaluated with respect to its mechanical behavior. It can be shown that in the case of the b-pillar the fiber orientation according to the CAIO method leads to higher part stiffness and a lower Puck criterion. Additionally a few negative aspects of the load path theory that occur during the design process are pointed out.},
address = {Hamburg},
author = {Klein, Daniel and Caballero, Steffen and Wartzack, Sandro},
booktitle = {Design for X. Beiträge zum 24. DfX-Symposium},
faupublication = {yes},
isbn = {978-3-941492-63-9},
keywords = {Leichtbau; Composites; Kraftfluss},
note = {UnivIS-Import:2015-04-16:Pub.2013.tech.FT.FT-KLMEFK.evalui{\_}7},
pages = {231-242},
peerreviewed = {Yes},
publisher = {TuTech Verlag},
title = {{Evaluierung} unterschiedlicher {Theorien} zur {Berechnung} beanspruchungsgerechter {Faserorientierungen} in {CFK}-{Strukturen}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641bf1622c8d},
venue = {Hamburg},
year = {2013}
}
@inproceedings{faucris.118128824,
author = {Klein, Daniel and Malezki, Waldemar and Wartzack, Sandro},
booktitle = {Proceedings of the 20th International Conference on Engineering Design (ICED15), Vol. 4: Design for X, 27.-30. Juli 2015, Mailand, 2015, S. 11-20.},
date = {2015-07-27/2015-07-30},
faupublication = {yes},
note = {UnivIS-Import:2015-10-26:Pub.2015.tech.FT.FT-KLMEFK.introd},
pages = {105-115},
peerreviewed = {Yes},
title = {{Introduction} of a computational approach for the design of composite structures at the early embodiment design stage},
venue = {Mailand},
year = {2015}
}
@inproceedings{faucris.111234024,
abstract = {Durch die drastische Verknappung der Ressourcen und den damit verbundenen Restriktionen seitens
der Politik (z.B. CO2-Grenzwerte) hat speziell in der Automobilindustrie der Leichtbau enorm an
Bedeutung gewonnen.
Um Leichtbaustrategien möglichst effizient durchführen zu können, ist es erforderlich bereits die frühe
Entwicklungsphase auszunutzen, da hier noch die maximale Designfreiheit zur Berücksichtigung aller
Anforderungen vorliegt.
Doch gerade die Berechnung und Auslegung in Bezug auf die Crashsicherheit von Bauteilen aus
Verbundwerkstoffen ist aufgrund der komplexen mechanischen Eigenschaften und der
fertigungsbedingten Anisotropie bisher noch sehr schwierig und zeitaufwändig. Deshalb wurde ein
Ansatz entwickelt, der es ermöglicht eine Materialbeschreibung für die Crashberechnung in frühen
Entwicklungsphasen zu generieren.
Über die Funktion *PART{\_}COMPOSITE werden in LS-DYNA® für ein einziges Bauteil mehrere bereits
bestehende Materialmodelle definiert. Dabei enthalten diese Materialmodelle Parameter, die so
aufeinander abgestimmt werden können, dass sich in Summe das gewünschte Materialverhalten
einstellen lässt. Die Identifikation dieser Materialparameter wird durch den Einsatz der
Optimierungssoftware LS-OPT® entscheidend beschleunigt. Damit kann innerhalb kürzester Zeit ein
valides Materialmodell erzeugt werden, das den Anforderungen in frühen Entwicklungsphasen gerecht
wird. Das genaue Vorgehen wird im Folgenden am Beispiel eines kurzfaserverstärkten Thermoplasten
gezeigt.},
author = {Gruber, Georg and Klein, Daniel and Wartzack, Sandro},
booktitle = {NAFEMS 2012},
date = {2012-05-08/2012-05-09},
faupublication = {yes},
keywords = {Simlution; Crash; Composites},
peerreviewed = {No},
title = {{Materialparameter}-{Optimierung} für die {Crashberechnung} in frühen {Entwicklungsphasen}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641c9823447a},
venue = {Bamberg},
year = {2012}
}
@article{faucris.115259804,
abstract = {Micromotion of dental implants may interfere with the process of osseointegration. Using three different types of virtual biomechanical models, varying contact types between implant and bone were simulated, and implant deformation, bone deformation, and stress at the implant-bone interface were recorded under an axial load of 200 N, which reflects a common biting force. Without friction between implant and bone, a symmetric loading situation of the bone with maximum loading and displacement at the apex of the implant was recorded. The addition of threads led to a decrease in loading and displacement at the apical part, but loading and displacement were also observed at the vertical walls of the implants. Introducing friction between implant and bone decreased global displacement. In a force fit situation, load transfer predominantly occurred in the cervical area of the implant. For freshly inserted implants, micromotion was constant along the vertical walls of the implant, whereas, for osseointegrated implants, the distribution of micromotion depended on the location. In the cervical aspect some minor micromotion in the range of 0.75 μm could be found, while at the most apical part almost no relative displacement between implant and bone occurred.},
author = {Winter, Werner and Klein, Daniel and Karl, Matthias},
doi = {10.1155/2013/265412},
faupublication = {yes},
journal = {Journal of Medical Engineering},
note = {UnivIS-Import:2015-04-14:Pub.2013.tech.FT.FT-KLMEFK.microm},
pages = {-},
peerreviewed = {Yes},
title = {{Micromotion} of {Dental} {Implants}: {Basic} {Mechanical} {Considerations}},
url = {https://www.mfk.uni-erlangen.de?file=pubmfk{\_}5641bb77de426},
volume = {2013},
year = {2013}
}
@inproceedings{faucris.111244144,
abstract = {Caries is the major dental disease and the main reason for tooth extractions as clinical investigations
show. Fortunately in many cases the carious lesion can be removed without extracting the whole tooth
and replaced by a restoration, e.g. inlays. However, the lifetime of inlays is limited. Besides the inlay
material the geomtery of the inlay can have a significant impact on the durability of an inlay. The aim
of this paper is to show how the impact of the inlay geometry on the durability can be observed with
the help of simulation and some common guidelines for dental restaurations are monitored.},
author = {Klein, Daniel and Grimme, Tobias and Tremmel, Stephan and Petschelt, Anselm and Lohbauer, Ulrich and Wartzack, Sandro},
booktitle = {ANSYS Conference & CADFEM User's Meeting 2012},
faupublication = {yes},
keywords = {Simulation; Medizintechnik},
peerreviewed = {No},
title = {{Simulationsbasierte} {Generierung} von {Präparationsrichtlinien} für {Zahn}-{Inlays} im kaubelasteten {Seitenzahnbereich}},
venue = {Kassel},
year = {2012}
}