On The Use Of Model Order Reduction Techniques For The Elastohydrodynamic Contact Problem
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On The Use Of Model Order Reduction Techniques For The Elastohydrodynamic Contact Problem
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Author : Maier, Daniel
language : en
Publisher: KIT Scientific Publishing
Release Date : 2015-05-12
On The Use Of Model Order Reduction Techniques For The Elastohydrodynamic Contact Problem written by Maier, Daniel and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-12 with Technology (General) categories.
The objective of this work is to develop a method which solves the nonlinear elastohydrodynamic contact problem in a fast and precise way using model order reduction techniques. The reduction procedure is based on a projection onto a low-dimensional subspace using different hyper-reduction procedures. The method provides fast and highly accurate reduced order models for stationary and transient, Newtonian and Non-Newtonian EHD line and point contact problems.
On The Use Of Model Order Reduction Techniques For The Elastohydrodynamic Contact Problem
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Author : Daniel Maier
language : en
Publisher:
Release Date : 2020-10-09
On The Use Of Model Order Reduction Techniques For The Elastohydrodynamic Contact Problem written by Daniel Maier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Technology & Engineering categories.
The objective of this work is to develop a method which solves the nonlinear elastohydrodynamic contact problem in a fast and precise way using model order reduction techniques. The reduction procedure is based on a projection onto a low-dimensional subspace using different hyper-reduction procedures. The method provides fast and highly accurate reduced order models for stationary and transient, Newtonian and Non-Newtonian EHD line and point contact problems. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Finite Element Modeling Of Elastohydrodynamic Lubrication Problems
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Author : Wassim Habchi
language : en
Publisher: John Wiley & Sons
Release Date : 2018-07-23
Finite Element Modeling Of Elastohydrodynamic Lubrication Problems written by Wassim Habchi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-23 with Technology & Engineering categories.
Covers the latest developments in modeling elastohydrodynamic lubrication (EHL) problems using the finite element method (FEM) This comprehensive guide introduces readers to a powerful technology being used today in the modeling of elastohydrodynamic lubrication (EHL) problems. It provides a general framework based on the finite element method (FEM) for dealing with multi-physical problems of complex nature (such as the EHL problem) and is accompanied by a website hosting a user-friendly FEM software for the treatment of EHL problems, based on the methodology described in the book. Finite Element Modeling of Elastohydrodynamic Lubrication Problems begins with an introduction to both the EHL and FEM fields. It then covers Standard FEM modeling of EHL problems, before going over more advanced techniques that employ model order reduction to allow significant savings in computational overhead. Finally, the book looks at applications that show how the developed modeling framework could be used to accurately predict the performance of EHL contacts in terms of lubricant film thickness, pressure build-up and friction coefficients under different configurations. Finite Element Modeling of Elastohydrodynamic Lubrication Problems offers in-depth chapter coverage of Elastohydrodynamic Lubrication and its FEM Modeling, under Isothermal Newtonian and Generalized-Newtonian conditions with the inclusion of Thermal Effects; Standard FEM Modeling; Advanced FEM Modeling, including Model Order Reduction techniques; and Applications, including Pressure, Film Thickness and Friction Predictions, and Coated EHL. This book: Comprehensively covers the latest technology in modeling EHL problems Focuses on the FEM modeling of EHL problems Incorporates advanced techniques based on model order reduction Covers applications of the method to complex EHL problems Accompanied by a website hosting a user-friendly FEM-based EHL software Finite Element Modeling of Elastohydrodynamic Lubrication Problems is an ideal book for researchers and graduate students in the field of Tribology.
An Efficient Solution Procedure For Elastohydrodynamic Contact Problems Considering Structural Dynamics
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Author : Schmidt, Jan Henrik
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-01-14
An Efficient Solution Procedure For Elastohydrodynamic Contact Problems Considering Structural Dynamics written by Schmidt, Jan Henrik and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-14 with categories.
An Efficient Solution Procedure For Elastohydrodynamic Contact Problems Considering Structural Dynamics
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Author : Jan Henrik Schmidt
language : en
Publisher:
Release Date : 2020-10-09
An Efficient Solution Procedure For Elastohydrodynamic Contact Problems Considering Structural Dynamics written by Jan Henrik Schmidt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Technology & Engineering categories.
This work presents an efficient solution procedure for the elastohydrodynamic (EHD) contact problem considering structural dynamics. The contact bodies are modeled using reduced finite element models. Singly diagonal implicit Runge-Kutta (SDIRK) methods are used for adaptive time integration. The structural model is coupled with the nonlinear Reynolds Equation using a monolithic coupling approach. Finally, a reduced order model of the complete nonlinear coupled problem is constructed. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
On Direct And Inverse Problems Related To Longitudinal Impact Of Non Uniform Elastic Rods
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Author : Burgert, Jens
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-05-07
On Direct And Inverse Problems Related To Longitudinal Impact Of Non Uniform Elastic Rods written by Burgert, Jens and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-07 with Technology & Engineering categories.
The impact of two non-uniform elastic rods is considered and a recursive method was developed that solves the inverse problem: Find the location-dependent impedance function of the impacting rod that generates a prescribed impact force. The developed method delivers exact solutions in closed-form. Moreover, a condition is derived which states if a physically meaningful solution exists. Finally, the underlying 1D model has been validated experimentally.
On The Influence Of Piecewise Defined Contact Geometries On Friction Dampers
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Author : Aramendiz Fuentes, Jimmy Alberto
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-09-12
On The Influence Of Piecewise Defined Contact Geometries On Friction Dampers written by Aramendiz Fuentes, Jimmy Alberto and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-09-12 with categories.
This work considers dampers that do not solely focus on a single strategy but instead combine them. The capabilities of conventional dry friction dampers are expanded by taking into account piecewise defined contact geometries. This leads to friction dampers that change their behavior depending on the amplitude of the oscillations. The vibration damping device in this work, introduces damping at high oscillation amplitudes and takes advantage of absorption at low oscillation amplitudes.
Nonparametric Identification Of Nonlinear Dynamic Systems
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Author : Kenderi, Gábor
language : en
Publisher: KIT Scientific Publishing
Release Date : 2018-11-11
Nonparametric Identification Of Nonlinear Dynamic Systems written by Kenderi, Gábor and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-11 with categories.
Lubricant Transport Towards Tribocontact In Capillary Surface Structures
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Author : Klima, Joachim
language : en
Publisher: KIT Scientific Publishing
Release Date : 2018-11-13
Lubricant Transport Towards Tribocontact In Capillary Surface Structures written by Klima, Joachim and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-13 with categories.
To counter lubricant shortage at a frictional contact (starvation), lubrication liquids, e.g. oils, are actively transported from a distant location towards the undersupplied tribocontact. This is done via small channels or generally via structures cut into a flat surface. In this way one can use capillary force as a cheap and reliable driver of the lubricant flow. Numerical modeling and experiments show that this method can be considered a promising new option to enhance tribocontact operation.
Dynamics Of Rotors On Refrigerant Lubricated Gas Foil Bearings
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Author : Leister, Tim
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-10-28
Dynamics Of Rotors On Refrigerant Lubricated Gas Foil Bearings written by Leister, Tim and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-28 with Technology & Engineering categories.
The gas foil bearing (GFB) technology is a key factor for the transition to oil-free rotating machinery. Among numerous advantages, GFBs offer the unique ability to be lubricated with working fluids such as refrigerants. However, the computational analysis of refrigerant-lubricated GFB–rotor systems represents an interdisciplinary problem of enormous complexity. This work pushes forward existing limits of feasibility and establishes a new strategy that enables stability and bifurcation analyses.