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21	Ověřování věrohodnosti měřicí metody z oblasti modální analýzy / Modal analysis experimental method verification Pop, Miroslav January 2019 (has links) This diploma thesis deals with the issue of operational modal analysis, which is one of the newer areas of structural dynamics that makes it possible to estimate modal properties of structures directly during their operation. The aim of this work is to create theoretical basis of operational modal analysis, more specifically of Frequeny Domain Decomposition method. Furthermore, apply this method to a selected structure and verify the achieved results using computational modelling and experimental modal analysis. The technique of dividing the experiment to separate measurements using reference sensor was used. Evaluation of the operational modal analysis was performed using self-created function for the MATLAB software and using the commercial PULSE Operational Modal Analysis software. Obtained results were verified by computational modelling and experimental modal analysis.
22	Improved equivalent circuit modeling and simulation of magnetostrictive tuning fork gyro sensors Starke, E., Marschner, U., Flatau, A. B., Yoo, J.-H. 06 September 2019 (has links) In this paper a new equivalent circuit is presented which describes the dynamics of a prototype micro-gyro sensor. The concept takes advantage of the principles employed in vibratory gyro sensors and the ductile attributes of GalFeNOL to target high sensitivity and shock tolerance. The sensor is designed as a tuning fork structure. A GalFeNOL patch attached to the y-z surface of the drive prong causes both prongs to bending the x-z plane (about the y axis) and a patch attached to the x-z surface of the sensing prong detects Coriolis-force induced bending in the y-z plane (about the x axis). A permanent magnet is bonded on top of each prong to give bias magnetic fields. A solenoid coil surrounding the drive prong is used to produce bending in the x-z plane of both prongs. The sensing prong is surrounded by a solenoid coil with N turns in which a voltage proportional to the time rate of change of magnetic flux is induced. The equivalent circuit enables the efficient modeling of a gyro sensor and an electromechanical behavioral simulation using the circuit simulator SPICE. The prongs are modeled as wave guiding bending beams which are coupled to the electromagnetic solenoid coil transducer. In contrast to known network approaches, the proposed equivalent circuit is the first tuning fork model, which takes full account of the fictitious force in a constant rotating frame of reference. The Coriolis force as well as the centrifugal force on a concentrated mass are considered. info:eu-repo/classification/ddc/620 ddc:620
23	Linear Dynamic System Analyses with Creo Simulate – Theory & Application Examples, Capabilities, Limitations – / Lineare dynamische Systemanalysen mit Creo Simulate – Theorie & Anwendungsbeispiele, Programmfähigkeiten und Grenzen – Jakel, Roland 07 June 2017 (has links) (PDF) 1. Einführung in die Theorie dynamischer Analysen mit Creo Simulate 2. Modalanalysen (Standard und mit Vorspannung) 3. Dynamische Analysen einschließlich Klassifizierung der Analysen; einige einfache Beispiele für eigene Studien (eine Welle unter Unwuchtanregung und ein Ein-Massen-Schwinger) sowie etliche Beispiele größerer dynamischer Systemmodelle aus unterschiedlichsten Anwendungsbereichen 4. Feedback an den Softwareentwickler PTC (Verbesserungsvorschläge und Softwarefehler) 5. Referenzen / 1. Introduction to dynamic analysis theory in Creo Simulate 2. Modal analysis (standard and with prestress) 3. Dynamic analysis, including analysis classification, some simple examples for own self-studies (shaft under unbalance excitation and a one-mass-oscillator) and several real-world examples of bigger dynamic systems 4. Feedback to the software developer PTC (enhancement requests and code issues) 5. References Creo Simulate Modalanalysen Modalanalysen mit Vorspannung modale Transformation physikalische und modale Koordinaten Massenpartizipations- faktoren modale Spannungen modale Dämpfung dynamische Zeitanalysen dynamische Frequenzanalysen Random Response Analysen Beschleunigungsdichtefunktion dynamische Stoßanalysen Schockspektren Fußpunktanregung Kraftanregung Unwuchtanregung Wuchtgüte Creo Simulate dynamic shock analysis modal superposition method acceleration spectral density (ASD) modal analysis with prestress shock response spectrum (SRS) mass participation factors physical and modal coordinates random response analysis base excitation modal stress balancing quality unbalance excitation force excitation modal transformation effective mass dynamic frequency analysis dynamic time analysis modal damping spectra response relation modal analysis ddc:629 Creo Simulate Modalanalyse Systemanalyse
24	Linear Dynamic System Analyses with Creo Simulate – Theory & Application Examples, Capabilities, Limitations –: Linear Dynamic System Analyses with Creo Simulate– Theory & Application Examples, Capabilities, Limitations – Jakel, Roland 07 June 2017 (has links) 1. Einführung in die Theorie dynamischer Analysen mit Creo Simulate 2. Modalanalysen (Standard und mit Vorspannung) 3. Dynamische Analysen einschließlich Klassifizierung der Analysen; einige einfache Beispiele für eigene Studien (eine Welle unter Unwuchtanregung und ein Ein-Massen-Schwinger) sowie etliche Beispiele größerer dynamischer Systemmodelle aus unterschiedlichsten Anwendungsbereichen 4. Feedback an den Softwareentwickler PTC (Verbesserungsvorschläge und Softwarefehler) 5. Referenzen / 1. Introduction to dynamic analysis theory in Creo Simulate 2. Modal analysis (standard and with prestress) 3. Dynamic analysis, including analysis classification, some simple examples for own self-studies (shaft under unbalance excitation and a one-mass-oscillator) and several real-world examples of bigger dynamic systems 4. Feedback to the software developer PTC (enhancement requests and code issues) 5. References info:eu-repo/classification/ddc/629 ddc:629

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