Insights through Modal Minimal Models for Analysis of Linear and Nonlinear Dynamic Problems

Autor: Andreas Hohl, Vincent Kulke, Georg-Peter Ostermeyer

Publikováno v: Shock and Vibration, Vol 2022 (2022)

Dynamic analysis of three-dimensional structures is common practice in industry to optimize products and in research to gain insights on the influence of parameters. The complexity differs based on the linearity or nonlinearity of the underlying prob

Externí odkaz: https://doaj.org/article/e5998b596154438f9ae3687c06ac92be

A Method for the Design and Optimization of Nonlinear Tuned Damping Concepts to Mitigate Self-Excited Drill String Vibrations Using Multiple Scales Lindstedt-Poincaré

Autor: Vincent Kulke, Paul Thunich, Frank Schiefer, Georg-Peter Ostermeyer

Publikováno v: Applied Sciences, Vol 11, Iss 4, p 1559 (2021)

In downhole drilling systems, self-excited torsional vibrations caused by the bit-rock interactions can affect the drilling process and lead to the premature failure of components. Especially self-excited oscillations of higher-order modes lead to cr

Externí odkaz: https://doaj.org/article/0016b89aa65144e797e7dd65176f1e40

Break-Through in Elimination of High-Frequency Torsional Oscillations through New Damping Tool Proven by Field Testing in the US

Autor: Armin Kueck, Andreas Hohl, Cord Schepelmann, Sui-Long Lam, Dennis Heinisch, Christian Herbig, Vincent Kulke, Georg-Peter Ostermeyer, Hanno Reckmann, Volker Peters

Publikováno v: Day 3 Wed, May 04, 2022.

The push in the drilling industry for drilling longer wells, and faster and more difficult trajectories leads to increasing challenges with the dynamics of the drilling systems in particular in expensive high end offshore wells. Dynamic effects are m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6de62497afacccd4644d55a6b3c4450d
https://doi.org/10.4043/31917-ms

Design and Field Deployment of a Torsional Vibration Damper

Autor: Andreas Hohl, Vincent Kulke, Georg-Peter Ostermeyer, Armin Kueck, Volker Peters, Hanno Reckmann

Publikováno v: Day 1 Tue, March 08, 2022.

Different vibration phenomena and vibration dysfunctions are excited by the drilling process. The associated dynamic loads result in downhole tool failures and inefficient drilling if not properly managed. Vibration mitigation strategies based on adj

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d61794b80936c25b1fa231a198322dd
https://doi.org/10.2118/208744-ms

Design and Investigation of a Nonlinear Damper Based on Energy Dissipation through Shock and Dry Friction to Suppress Critical Self-Excited Vibrations in Drilling Systems

Autor: Andreas Hohl, Georg-Peter Ostermeyer, Vincent Kulke

Publikováno v: Shock and Vibration, Vol 2021 (2021)
Shock and Vibration : special issue Nonlinear Dynamics in Drilling Engineering 2021, id 5089213. https://doi.org/10.1155/2021/5089213--https://doi.org/10.1155/3148--https://www.hindawi.com/journals/sv/--http://www.iospress.nl/journal/shock-and-vibration/--http://www.bibliothek.uni-regensburg.de/ezeit/?2070162--1875-9203--1070-9622

In this paper, a passive damper based on energy dissipation through shock and dry friction (shock-friction damper) is investigated regarding its design and effectiveness for damping self-excited torsional vibrations similar to those occurring in deep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eac3b1c0229b5178f932234b6b52d7a3