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Logo: Institute of Continuum Mechanics/Leibniz Universität Hannover
Logo Leibniz Universität Hannover
Logo: Institute of Continuum Mechanics/Leibniz Universität Hannover
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Contact Mechanics

A Novel Design Approach for Safety at Ship Collision

 

Researcher:

M.Sc. Mohsin Ali Chaudry

 

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Towards multiscale modeling of Abrasive wear

Bild zum Projekt Towards multiscale modeling of Abrasive wear

Supervisor:

P. Wriggers

Researcher:

A. B. Harish

Brief description:

The work is motivated towards understanding wear as a multiscale-multiphysics approach. A 3D framework is developed to simulate cracks propagation in a microstructure due to contact loading to eventually predict wear trends in filled elastomeric compounds.

 

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Application of the Virtual Element Method to Non-Conforming Contact Interfaces

Bild zum Projekt Application of the Virtual Element Method to Non-Conforming Contact Interfaces

Supervisor:

P. Wriggers

Researcher:

W. Rust

Brief description:

When using standard Finite Elements the discretization is subject to limitations depending on the element geometry. In contrast to this the Virtual Element Method offers the possibility for elements with an arbitrary number of nodes and special geometries like non-convex polygons or hanging nodes. In this Project the application of the Virtual Elements to different problems is investigated. Here it is used to create an efficient contact discretization.

 

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Contact models for soil mechanics

Bild zum Projekt Contact models for soil mechanics

Supervisor:

P. Wriggers

Researcher:

C. Weißenfels

Brief description:

The installation of foundations influences strongly the load bearing capacity of the soil. The large discrepancy between experimental and numerical results, using Coulomb friction law for modeling the soil structure interaction, points out that new strategies to solve this kind of problems are necessary. Experimental observations show that for rough surfaces of the structure the friction angle at the contact zone corresponds to the friction angle of the soil. This leads to the conclusion that the contact zone lies completely within the soil. A way to improve the friction laws for soil structure interactions is to project the soil models onto the contact surface which is the motivation of this work.

 

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Interaction between tire and vulcanizing mold during extraction

Bild zum Projekt Interaction between tire and vulcanizing 
mold during extraction

Supervisor:

P. Wriggers

Researcher:

J.-H. Dobberstein

Brief description:

One sub-step of tire production is the vulcanization of a green tire under pressure inside a mold. Adherence of the rubber to this mold leads to problems during the subsequent extraction phase. Within this project the extraction of a vulcanized tire from a mold will be simulated, to obtain a better understanding of the mechanisms leading to the problems and to develop solution strategies.

 

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MULTISCALE CONTACT HOMOGENIZATION OF GRANULAR INTERFACES

Bild zum Projekt MULTISCALE CONTACT HOMOGENIZATION OF GRANULAR INTERFACES

Supervisor:

P. Wriggers, I. Temizer

Researcher:

R. Weidlich

Brief description:

Dry granular third bodies are frequently encountered at multiple scales of contact interfaces in contexts that range from mechanical problems of tire traction and semiconductor manufacturing to biological problems of wear debris generation and mobility in implant joints. The investigations that are envisaged within this proposal will provide further insight into the modeling and simulation of third body effects in a fully nonlinear three-dimensional virtual setting that accounts for inelastic phenomena.

 

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Design and Control of Additive Manufacturing Processes for Medical Silicone

 

Researcher:

M.Sc. Philipp Hartmann

 

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High Performance Computing of Stereolithography Processes

 

Researcher:

M.Sc. Sandeep Kumar

 

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Improved Frictional Models for Pile Installations

 

Researcher:

M.Sc. Ajay Harish

 

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A 3D CAD/CAE integration using isogeometric symmetric Galerkin boundary element method