Se desarrolla un método de diseño utilizando el concepto de transmisibilidad relativa para la solución del problema de grandes desplazamientos de la base (displacement demand) en estructuras aisladas bajo acción de terremotos. El procedimiento se desarrolla en el dominio de la frecuencia, esto para obtener la rigidez y amortiguamiento del sistema aislante. Posteriormente, se utiliza un modelo de estructura benchmark de múltiples grados de libertad, excitado por señales de entrada sísmica reales para la evaluación del procedimiento de diseño, siendo la propuesta un control puramente pasivo. Los resultados muestran la eficacia de esta metodología, ya que los desplazamientos de la base obtenidos con un sistema netamente de control pasivo son muy cercanos a los desplazamientos alcanzados con el uso de sistemas control activo que son más complejos y costosos. / A design method is developed using the relative transmissibility concept to solve the problem of large base displacement (displacement demand) in isolated structures under the action of earthquakes. The procedure is developed in the frequency domain, this to obtain the stiffness and damping of the isolation system. Subsequently, a multiple degree of freedom benchmark structure model is used, excited by a real seismic input signals for the evaluation of the design procedure, the proposal is a purely passive control. The results show the effectiveness of this methodology, due to the fact that base displacement obtained with a purely passive control system are very close to displacement achieved with the use of active control systems that are more complex and expensive. / Tesis

En esta investigación se plantea una nueva metodología de diseño con el objetivo de obtener una mejora adicional basada en el concepto de transmisibilidad para la reducción del desplazamiento absoluto en la base aislada de una estructura. El incremento del periodo de diseño en los últimos años potencia el método propuesto basado en el concepto de transmisibilidad. Un edificio de 10 pisos es propuesto para esta investigación. Los resultados demuestran una reducción considerable en el desplazamiento de la base aislada cuando está sometida a sismos de gran magnitud. / In this research, a new design methodology based on the concept of transmissibility is proposed for the reduction of the absolute displacement in the isolated base of a structure. An increase in the design period in the last years favors the proposed method based on the transmissibility concept. A 10-story building is proposed for this research. The results show a considerable reduction in the displacement of the isolated base when it is subjected to earthquakes of great magnitude / Trabajo de investigación

As part of the FVA research project 965 I with the topic 'Elastic-plastic design of the press connection between rotor shaft and laminated core of high-speed electric machines to increase power density', the shaft-hub connection (WNV) is being investigated in accordance with the topic. The elastically/plastically joined WNV is intended to prevent slippage of the laminated core even at high speeds (centrifugal speed up to 22,000 rpm) and torque loads up to 3000 Nm. The background to this is the widening of the plate pack, which inevitably leads to a reduction in the joint pressure. The joint of the WNV is composed of three tribological partners. On the one hand, it is the shaft made of 18CrNiMo7-6, and on the other hand, it is the NO20-13 type electrical steel sheet with the baked enamel, which initially makes the tribological system difficult to describe. Many factors, such as the type of sheet cut (stamped or lasered), have an influence on the static friction coefficient in the joint and thus on the torque transmission. In order to better estimate and test the actual load capacity of the joint, this paper describes how the static friction coefficient is determined experimentally at the Institute of Construction and Drive Technology (IKAT) using various devices. On the other hand, a high-speed test rig is presented, which should enable tests close to real components. In particular, the increased requirements on the test rig components with regard to dynamic balancing and centrifugal forces as well as their design solutions are presented.:Introduction Friction coefficent between shaft and hub - model experiments Static experiments Dynamic experiments under high speed / Im Rahmen des FVA-Forschungsprojektes 965 I mit dem Thema 'Elastisch-plastische Auslegung der Pressverbindung zwischen Rotorwelle und Blechpaket von hochdrehenden E-Maschinen zur Steigerung der Leistungsdichte' wird die Welle-Nabe-Verbindung (WNV) gemäß dem Thema untersucht. Mit der elastisch/plastisch gefügten WNV soll ein Durchrutschen des Blechpaketes auch bei großen Drehzahlen (Schleuderdrehzahl bis 22.000U/min) und Drehmomentlasten bis 3000 Nm verhindert werden. Hintergrund ist die Aufweitung des Blechpaketes, die zwangsläufig zu einer Reduktion des Fugendruckes führt. Die Fuge der WNV setzt sich aus drei tribologischen Partnern zusammen. Einerseits ist es die Welle aus 18CrNiMo7-6, andererseits ist es das Elektroblech vom Typ NO20-13 mit dem Backlack, welches das tribologische System zunächst schwer beschreibbar macht. Viele Faktoren, wie beispielsweise die Art des Blechzuschnittes (gestanzt oder gelasert), haben Einfluss auf den Haftreibwert in der Fuge und damit auf die Drehmomentübertragung. Um die tatsächliche Belastbarkeit der Verbindung besser abschätzen und prüfen zu können, wird in dieser Arbeit beschrieben, wie der Haftreibwert experimentell am Institut für Konstruktions- und Antriebstechnik (IKAT) mit Hilfe verschiedener Vorrichtungen ermittelt wird. Andererseits wird ein Hochdrehzahlprüfstand (Abbildung) vorgestellt, der Realbauteilnahe Versuche ermöglichen soll. Insbesondere werden die erhöhten Anforderungen an die Prüfstandkomponenten bezüglich des dynamischen Wuchtens und der Fliehkräfte sowie deren konstruktive Lösungen dargestellt.:Introduction Friction coefficent between shaft and hub - model experiments Static experiments Dynamic experiments under high speed

O objetivo desta pesquisa é avaliar o potencial de ocorrência de hidrocarbonetos utilizando uma abordagem simplificada para reservatórios de arenito com dados de dois campos petrolíferos. Inclui a modificação de equações tradicionais para os parâmetros relevantes objetivando ajudar a fornecer expressões alternativas para auxiliar na previsão das unidades de fluxo (hidráulicas) dos reservatórios, transmissibilidade e recuperação primária no Bloco de Petróleo de Ritchie e no Campo de Petróleo e Gás de Osland, ambos situados no Delta do Niger, Nigéria. Também envolve a estimativa dos volumes recuperáveis de hidrocarbonetos com os cortes d´água (Water Cut - Cw), o uso de correlações de tempo/profundidade corretas, análise de velocidade aprimorada para petrofísica e interpretações sísmicas envolvendo a recomendação dos pontos para localização de poços de desenvolvimento no Campo de Petróleo e Gás Osland. No geral, quatro equações tradicionais de permeabilidade (Tixier, Timur, Coates e Coates e Danio\'s) foram modificadas para a análise comparativa e previsão da transmissibilidade dos reservatórios selecionados para a recuperação primária de hidrocarbonetos. Da mesma forma, a equação da Schlumberger para as equações de cálculo do índice de fluido livre (Free Fluid Index - FFI), Tiab e Donaldson para o indicador de zona de fluxo (Flow Zone Indicator - FZI) e índice de qualidade do reservatório (Reservoir Quality Index - RQI) foram redefinidas e incorporadas para auxiliar nas avaliações da unidade de fluxo. Além disso, as equações da Schlumberger para a permeabilidade relativa de fluidos também foram modificadas e utilizadas para a predição da Cw associada. Os resultados indicam reservatórios com boas unidades de vazão e taxas de recuperação. Os volumes de Cw nos reservatórios avaliados estão dentro das taxas aceitáveis e permitiram, também, a identificação de outras profundidades prováveis e a recomendação de áreas de drenagem. A utlização de dados de perfilagem de poços em conjunto com os dados sísmicos (Well to Seismic tie - W-ST) ajudou a reduzir a dúvida sobre a espessora econômica (Pay Thickness - Pt) e a área de drenagem (Drainage Area - Ad). Modelos, em forma de simples equações e gráficos, foram sugeridos para a avaliação de reservatórios dentro de unidades de arenito. Com isso, o trabalho penoso no uso de equações tradicionais foi contornado. Desta forma, os erros computacionais que se somam quando se utliza uma série de equações antes das unidades de fluxo serem avaliadas foram evitados. Portanto, acredita-se que os métodos aqui adotados tenham minimizado o risco e a incerteza que acompanham as avaliações da unidade de fluxo, assim como as estimativas de volumes. Recomenda-se que um geólogo com experiência em geofísica ou mesmo um geofísico deve estar sempre envolvido em interpretações sísmicas e petrofísicas. Isso também contribuirá para a redução de riscos e incertezas. / The aim of this research is to evaluate the hydrocarbon potential using a simplified approach in the sandstone reservoirs of the fields within the two case studies. It includes the modification of some traditional equations for the relevant parameters to help provide alternative expressions to aid the prediction of the reservoirs flow (hydraulic) units, transmissibility and primary recovery in Ritchies Oil Block and Osland Oil and Gas Field. It also involves the estimation of the recoverable volumes of hydrocarbons with the associated water cuts (Cw), and the use of correct time/depth correlations and enhanced velocity analysis for petrophysics and seismic interpretations involving the recommendation of the points for siting developmental wells in Osland Oil and Gas Field. Overall, four traditional equations of permeability (Tixiers, Timurs, Coates and Coates and Denoos) were modified for the comparative analysis and prediction of the selected reservoirs transmissibility and primary hydrocarbon recovery. Similarly, the Schlumbergers equation for the free fluid index (FFI), the Tiab, and Donaldsons equations for Flow zone indicator (FZI) and reservoir quality index (RQI) were redefined and engaged to aid the flow units evaluations. In addition, the Schlumbergers equations for fluids relative permeability were also modified and engaged for the prediction of the associated Cw. The results indicate reservoirs with good flow units and rates of recoveries. The volumes of Cw in the evaluated reservoirs are within the acceptable rates and other probable depths and drainage areas were recommended. Well to seismic tie (W-ST) aided to reduce the doubt regarding pay thickness (Pt) and drainages area (Ad). Models, in form of equations and handy charts, were suggested for the evaluation of reservoirs within sandstone units. The drudgery in the use of tradition equations was bypassed. The computational errors that may come with the calculation of a range of equations before flow units are evaluated were avoided. The methods adopted herein are believed to have minimised risk and uncertainty that comes with the flow unit evaluations and volumes estimations. It is supported herein that a geologist upskilled in geophysics or a geophysicist unskilled in geology should always be engaged in seismic and petrophysical interpretations. This will also contribute to risk and uncertainty reduction.