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Logo: Institut für Baumechanik und Numerische Mechanik/Leibniz Universität Hannover
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Logo: Institut für Baumechanik und Numerische Mechanik/Leibniz Universität Hannover
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Model Order Reduction

Thermo-mechanical analysis of tires in stationary rolling contact

Bild zum Projekt Thermo-mechanical analysis of tires in stationary rolling contact

Bearbeitung:

M.Sc. Robert Beyer, Prof. Dr.-Ing. Udo Nackenhorst

Förderung durch:

German Research foundation (DFG)

Kurzbeschreibung:

The optimization of tire designs towards less rolling resistance and higher durability is still a challenging task. In the recently finished project (Link to Anuwat Suwannachit 2012) a thermo-mechanical framework for the calculation of the energy dissipation in the bulk material of stationary rolling tires was developed.

 

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Sophisticated optimization techniques for structural health monitoring

Bild zum Projekt Sophisticated optimization techniques for structural health monitoring

Bearbeitung:

M. Sc. Mahmoud M. Jahjouh, Prof. Dr.-Ing. Udo Nackenhorst

Förderung durch:

DAAD – Deutscher Akademischer Austauschdienst

Kurzbeschreibung:

Structural monitoring and damage detection has become a growing area in research and development, as witnessed by the increasing number of relevant journal and conference papers. To this end, a crucial challenge is the development of robust and efficient structural identification methods that can be applied to identify key parameters and hence, cause change of structural state.

 

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Innovative concepts for physically based modeling approaches of high-cycle fatigue

 

Leitung:

Prof. Dr.-Ing. Udo Nackenhorst in collaboration with Prof. David Neron (LMT, ENS Cachan) and Prof. em. Pierre Ladeveze (LMT ENS Cachan) in the framework of IRTG 1627

Bearbeitung:

Mainak Bhattacharyya, Dr.-Ing. Amelie Fau

Laufzeit:

2014-2017

Förderung durch:

International Research Training Group 1627, DFG (German Research Foundation)

Kurzbeschreibung:

The objective of this project is to go beyond S-N curves classically used to represent damage evolution for damage fatigue. Original sophisticated integration schemes are investigated to be able to predict damage evolution for a high number of cycles while considering physically based models.

 

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Model Reduction Techniques for Probabilistic Fatigue Assessment

 

Leitung:

Prof. Dr.-Ing. Udo Nackenhorst in collaboration with Prof. David Neron (LMT, ENS Cachan) and Prof. em. Pierre Ladeveze (LMT ENS Cachan) in the framework of IRTG 1627

Bearbeitung:

Shadi Alameddin, Dr. Ing. Amelie Fau, Mainak Bhattacharyya

Laufzeit:

2016-2019

Förderung durch:

International Research Training Group 1627, DFG (German Research Foundation)

Kurzbeschreibung:

This project aims to develop reliable model reduction techniques for the treatment of damage fatigue modeling in the framework of multiple time scales and probabilistic evaluation of service life of materials and structures.

 

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Reduced-order models for structural dynamic Finite Element systems

Bild zum Projekt Reduced-order models for structural dynamic Finite Element systems

Bearbeitung:

Stefanie Tegtmeyer, Prof. Dr.-Ing. Udo Nackenhorst

Förderung durch:

State of Lower Saxony

Kurzbeschreibung:

Computational models from different engineering fields tend to get more and more detailed and complex thanks to the development of more and more powerful computers. Nowadays, solving these large systems of equations is not impossible, but requires a lot of time and computational resources.

 

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Dynamic properties of heterogeneous materials with uncertain microstructures and local damage

 

Bearbeitung:

Prof. Dr.-Ing. Udo Nackenhorst, M.Sc. Andre Hürkamp

Kurzbeschreibung:

The goal of this research project is the development of novel predictive techniques for damage monitoring in heterogenous materials. Multi-scale modeling techniques are combined with related statistical methods for scale bridging.

 

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A finite element tire modelling approach for car interior noise simulation

 

Bearbeitung:

Prof. Dr.-Ing. Udo Nackenhorst, Dipl.-Ing Raffeala Chiarello

Kurzbeschreibung:

A finite element approach for the simulation of the dynamic behaviour of tires rolling on rough roads for the car indoor noise prediction is presented. Based on a detailed finite element model valid for the nonlinear stationary rolling analysis a modal tire model to be coupled with a total vehicle dynamics simulation approach has been developed, where special care is taken on the physical consistency.

 

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