TY - RPRT A1 - Andrae, Marc A1 - Auer, Veronika A1 - Barth, Simon A1 - Baumann, Sarah A1 - Betz, Andreas A1 - Châteauvieux-Hellwig, Camille A1 - Geladze, Ekaterine A1 - Hauch, Julia A1 - Hirschmüller, Sebastian A1 - Kapitza, Stephanie A1 - Karlinger, Peter A1 - Köster, Heinrich A1 - Kramer, Oliver A1 - Lüftl, Katharina A1 - Martius, Henrike A1 - Mayr, Andreas A1 - Michanickl, Andreas A1 - Miletzky, Frank A1 - Mühlbauer, Wolfgang A1 - Niedermaier, Peter A1 - Obermeier, Frederik A1 - Peklo, Franziska A1 - Regauer, Verena A1 - Schanda, Ulrich A1 - Schemme, Michael A1 - Schiffer, Lukas A1 - Schöpfer, Fabian A1 - Schumacher, Mara A1 - Schutter, Sabina A1 - Schweiger, Andreas A1 - Seckler, Eva A1 - Sigg, Ferdinand T1 - Jahresbericht 2019, Forschung - Entwicklung - Innovation N2 - Mit dem jährlich erscheinenden Forschungsbericht möchte die Technische Hochschule Rosenheim einen Einblick in ihre vielfältigen Projekte und Aktivitäten der angewandten Forschung und Entwicklung geben. T3 - Schriftenreihen - Forschungsbericht - 8 KW - Forschung Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-13977 ER - TY - CHAP A1 - Mayr, Andreas A1 - Nightingale, T.R.T. T1 - On the mobility of joist floors and periodic rib-stiffened plates. T2 - Proceedings of Inter-Noise 2007 Istanbul, 36th International Congress & Exhibition on Noise Control Engineering, Istanbul, Turkey, August 2007. KW - Joist floors KW - rib-stiffened plates Y1 - 2007 ER - TY - CHAP A1 - Mayr, Andreas A1 - Gibbs, Barry A1 - Fischer, Heinz Martin T1 - Spatial variation of the point mobility of a timber joist floor T2 - DAGA 2008, Deutsche Jahrestagung für Akustik, Dresden. KW - Point mobility KW - Timber joist floor KW - Spatial variation Y1 - 2008 ER - TY - CHAP A1 - Mayr, Andreas A1 - Gibbs, Barry T1 - Approximation of single equivalent mobilities of timber joist floors. T2 - Acoustics 2008, Paris, France N2 - To estimate the structure-borne sound power of vibrational active machines or components two source quantities, corresponding to the source activity and mobility, and one receiver quantity, the mobility, are usually required. A practical, laboratory-based measurement procedure for the characterisation of mechanical installations has recently been proposed, which yields single equivalent values of source strength and source mobility. In order to predict the power in the installed condition, an estimate of the receiver mobility also is required, again, for practical reasons, in the form of a single equivalent value. This paper considers the single equivalent receiver mobilities for lightweight building structures - timber joist floors. The value obtained is in the form of the average magnitude of the effective mobilities over the contact points. A simple prediction method is proposed for point- and transfer mobilities (both are required to yield the effective mobility at each contact) based on infinite beam and infinite plate behaviour. Estimates for point-, transfer- and single equivalent receiver mobilities are discussed and compared with measured data. KW - single equivalent mobilities KW - Timber joist floor Y1 - 2008 ER - TY - CHAP A1 - Gibbs, Barry A1 - Mayr, Andreas T1 - Structure-borne sound transmission from machines into ribbed structures. T2 - Acoustics 2008, Paris, France N2 - The total structure-borne sound power of an installed machine is a function of the source activity and mobility, and the receiver mobility, at each contact and for each component of excitation. The data and computational requirements for prediction therefore are large. Manufacturers view their products as single entities and desire corresponding single values of source strength. A laboratory reception plate measurement procedure has been proposed which yields single equivalent values of source strength and source mobility. The source data, in combination with an estimate of the single equivalent value of receiver mobility, yields the approximate total installed power. The accuracy of the estimate is dependent on the spatial variation in contact conditions over the connections. In addition, phase information has been lost in the simplification. Case studies are described for multiple contact sources on a non-homogeneous plate (a timber-joist floor) where the approximate estimates of structure-borne power are compared with exact values obtained from full mobility formulations. KW - Sound trasmissions KW - ribbed structures Y1 - 2008 ER - TY - CHAP A1 - Gibbs, Barry A1 - Mayr, Andreas T1 - Structure-borne sound from machines in lightweight buildings. T2 - 15th International Congress on Sound and Vibration (ICSV15), July 2008, Daejeon, Korea N2 - A practical method is proposed for predicting the total structure-borne sound transmission from machines installed in lightweight buildings. The total structure-borne sound power is a function of the source activity and mobility, and the receiver mobility, at each contact and for each component of excitation. The data and computational requirements for prediction normally are large and are required to be in complex form for the cases where source mobility and receiver mobility are of the same magnitude. This can occur in lightweight framed buildings. However, manufacturers view their products as single entities and desire corresponding single values of source strength. They also desire simple measurement methods and the data obtained to be in octave or one-third octaves. A laboratory reception plate measurement procedure has been proposed which yields single equivalent values of source strength and source mobility. The source data, in combination with an estimate of the single equivalent value of receiver mobility, yields a simple prediction of the total installed power. The accuracy of the simple prediction depends on the spatial variation in contact conditions. For example, the receiver mobility over a joist is likely to be significantly lower than for positions between joists. Case studies are described for multiple contact sources on a timber-joist floor where the simple predictions are compared with exact values obtained from a full mobility formulation. KW - Structure-born sound KW - Lightweight buildings Y1 - 2008 ER - TY - CHAP A1 - Mayr, Andreas T1 - Schallschutz mit der neuen DIN 4109, Was hat sich im Bauteilkatalog Trockenbau geändert? T2 - Das Forum 2017 - Zukunft Trockenbau Ausbau, Berlin, Deutschland, September 2017. N2 - Die DIN 4109 regelt die Anforderungen an den Schallschutz in Gebäuden sowie den Nachweis der Einhaltung dieser Anforderungen. Im Juli 2016 erschien die komplett überarbeitete und neu strukturierte „neue“ DIN 4109. Im Vortrag werden wesentliche Änderungen, die neuen Rechenverfahren und die relevanten Bauteilkataloge kurz erläutert. Änderungen, die sich speziell für die schalltechnische Planung und Ausführung des Trockenbaus ergeben, werden anhand von praktischen Beispielen aufgezeigt. Damit soll ein Gefühl für Möglichkeiten und Grenzen in der Anwendung der neuen Norm vermittelt werden. KW - Trockenbau KW - Schallschutz KW - Bauteilkatalog Y1 - 2017 ER -