TY - RPRT A1 - Bauer, Lucia A1 - Benecken, Gerd A1 - Bücker, Dominikus A1 - Buff, Alexander A1 - Carlton, Katrina A1 - Feldmeier, Franz A1 - Flatscher, Simon A1 - Hack, Andreas A1 - Halt, Manfred A1 - Jell, Peter A1 - Köster, Heinrich A1 - Kucich, Martin A1 - Manzinger, Franziska A1 - Mecking, Simon A1 - Paus, Inger A1 - Rex, Steffen A1 - Schanda, Ulrich A1 - Schreyer, Manuela A1 - Spindler, Uli A1 - Stadler, Constanze A1 - Stahnke, Svenja A1 - Stiegler, Gertrud A1 - Walser, Georg A1 - Wambsganß, Mathias A1 - Wellisch, Ulrich T1 - Forschungsbericht 2014 N2 - Mit dem jährlich erscheinenden Forschungsbericht möchte die Hochschule Rosenheim einen Einblick in ihre vielfältigen Projekte und Aktivitäten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2014 wird über Vorhaben im Jahr 2014 berichtet. T3 - Schriftenreihen - Forschungsbericht - 3 KW - Forschung Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-12317 ER - TY - CHAP A1 - Mecking, S. A1 - Kruse, T. A1 - Schanda, Ulrich T1 - Messung und Berechnung der Körperschallübertragung am Bauteilstoß von Massivholzelementen T2 - Deutsche Gesellschaft für Akustik e.V. (ed.), Fortschritte der Akustik - DAGA KW - Holzbau KW - Schallmesstechnik Y1 - 2015 ER - TY - RPRT A1 - Mecking, S. A1 - Winter, C. A1 - Schanda, Ulrich T1 - Teilantrag 3: Parameterentwicklung und Stoßstellenmodellierung. Vibroakustik im Planungsprozess für Holzbauten Modellierung, numerische Simulation, Validierung. Endbericht Phase I. KW - Holzbau KW - Schallmesstechnik Y1 - 2015 ER - TY - CHAP A1 - Schanda, Ulrich T1 - VibWood. Planungshilfen zur schall- und schwingungstechnischen Beschreibung von Holzdecken bei tiefen Frquenzen T2 - Forum Holzbau HBS KW - Schallmesstechnik KW - Holzbau Y1 - 2018 ER - TY - RPRT A1 - Schanda, Ulrich A1 - Mayr, A. A1 - Schöpfer, F. T1 - Nachhaltiger Schallschutz gebäudetechnischer Anlagen KW - Holzbau KW - Schallmesstechnik Y1 - 2018 ER - TY - CHAP A1 - Schöpfer, Fabian A1 - Hopkins, Carl A1 - Mayr, Andreas R. A1 - Schanda, Ulrich T1 - Measured transmission functions from structure-borne sound sources in a timber-frame construction T2 - Proceedings of Euronoise 2015, Maastricht, Netherlands N2 - The aim of prEN 15657-2 is to provide engineering methods to estimate the structure-borne sound power input from machinery in situations where the source mobility matches or is lower than the receiver mobility. This situation often affects lightweight constructions such as timber-frame buildings. To estimate the sound pressure level in a room that is adjacent or distant from the room containing the source, the installed structure-borne sound power has to be propagated across at least one junction in the timber-frame construction. However, at present there are no generic, validated calculation models due to the complexity and the large variety of timber-frame constructions. A simplified approach to investigate and compare the structure-borne sound transmission is to treat the framed construction as a black box and only consider one parameter, a transmission function which is the ratio of the sound pressure level in the receiving room to the injected structure-borne sound power level. To get information about the variation of this transmission function in different timber-frame constructions, measurements were made in both the laboratory and the field. Experimental results are presented showing the variation due to different building configurations and the effect of the excitation position on the transmission function. KW - Schallmesstechnik KW - Holzbau Y1 - 2015 ER - TY - CHAP A1 - Schöpfer, Fabian A1 - Hopkins, Carl A1 - Mayr, Andreas R. A1 - Schanda, Ulrich T1 - Messungen der Körperschallintensität in einer Holzrahmenbaustruktur T2 - DAGA 2015, 41. Deutsche Jahrestagung für Akustik, Nürnberg, Deutschland. N2 - In den vergangenen Jahren hat der Holzbau auch im mehrgeschossigen Wohnungsbau an Bedeutung gewonnen. Zur Gewährleistung des Schallschutzes zwischen fremden Wohneinheiten sind Werkzeuge zur Berechnung der Schallübertragung in leichten Baustrukturen, wie zum Beispiel Holzrahmenbaukonstruktionen nötig. Solche Prognosemodelle müssen für Ingenieuranwendungen robust sein und auf abstrahierten, einfachen Rechenmodellen beruhen. Um die komplexen bertragungsmechanismen in solchen Rechenmodellen abbilden zu können, ist jedoch zunächst eine detaillierte Kenntnis des Schwingungs- und Körperschallverhaltens dieser Konstruktionen nötig. In diesem Beitrag werden Ergebnisse von Untersuchungen an einer konkreten Rahmenbaukonstruktion vorgestellt. Hierzu wurde im Labor für Schallmesstechnik an der Hochschule Rosenheim ein Leichtbauprüfstand errichtet. Grundlage für ein Prognosemodell könnten Berechnungsmethoden wie die Statistische Energieanalyse (SEA) darstellen. Um deren Anwendbarkeit zu prüfen, wurde die Verteilung der Körperschallenergie in einer Holzrahmenbauwand bei Anregung durch eine Punktquelle untersucht. Dabei wurde die Abnahme der Oberflächenschnelle mit steigendem Abstand zum Anregungspunkt sowie der Energiefluss in der Struktur mithilfe von Körperschallintensitäts-Messverfahren analysiert. KW - Schallmesstechnik KW - Holzbau Y1 - 2015 ER - TY - CHAP A1 - Schöpfer, Fabian A1 - Hopkins, Carl A1 - Mayr, Andreas R. A1 - Schanda, Ulrich T1 - Structure-borne sound propagation across a double leaf timber-frame wall T2 - 22nd International Congress on Sound and Vibration, ICSV22, Florence, Italy, July 2015. N2 - With the increasing mechanization of buildings, it is necessary to be able to predict both the structure-borne sound power input from building machinery and the subsequent propagation of structure-borne sound in the building. This paper considers lightweight constructions and describes the results of an experimental study in the laboratory on a T-junction that was constructed from a timber joist floor and two double leaf timber-frame walls. The focus in this paper is on the vibrational behaviour of one of the timber-frame walls. To assess the vibration pattern and the propagation of structure-borne sound, the surface velocity levels were measured on a grid on both leaves of the wall with point force excitation on one side. This grid allowed calculation of structural intensity vectors. The influence of elements such as the timber studs and tongue and grooved joints between the boards were apparent in different frequency regions. Experimental modal analysis was carried out using measurements on both leaves of the wall, giving information about the coupling in different frequency regions. The results give insight into how such a timber-frame wall could be modelled using statistical energy analysis. KW - Double-leaf timber-frame wall KW - Structure-borne sound propagation Y1 - 2015 ER - TY - RPRT A1 - Schanda, Ulrich A1 - Mayr, Andreas R. A1 - Schöpfer, Fabian T1 - Nachhaltiger Schallschutz gebäudetechnischer Anlagen T2 - Forschungsbericht 2014 Y1 - 2015 SP - 20 EP - 23 ER - TY - GEN A1 - Mecking, S. A1 - Kruse, T. A1 - Schanda, Ulrich T1 - Measurement and calculation of sound transmission across junctions of solid timber building elements. T2 - Proceedings of Euronoise 2015 N2 - Extended Abstract: The number of multi-storey buildings in timber construction increases continuously. Compared to concrete and brick constructions the planning process of sound insulation of a wooden building causes much higher effort. Reasons are missing planning data and planning tools for sound insulation. Suitable, computer-based tools, which enable a simulation already in an early planning phase of a building, could help to reduce the planning effort significantly. One possibility to calculate the in-situ airborne and impact sound insulation is to combine the Finite Element Method (FEM) and the Statistical Energy Analysis (SEA) in a coupled model, which consider the direct transmission path of the building elements and the flanking transmission paths. The SEA-based calculation of the sound insulation according to EN 12354 requires the vibration reduction indices of the transfer paths at a junction of structural elements. This paper shows actual measurement results of the Operational Vibration Analysis and the vibration reduction indices of coupled Cross Laminated Timber elements. In the process the elastic layers, the pressure and the fasteners were diversified. In addition the modelling of the junction by using a commercial SEA tool will be presented and the comparison of the calculated with the measured results. From this comparison conclusion about the valid frequency domain for the Statistical Energy Analysis will be presented. The results are based on the current status of the research project “Vibroakustik im Planungsprozess für Holzbauten” funded by the German Research Foundation (DFG) and German Federation of Industrial Research Associations (AIF). It is carried out by Technical University Munich, ift Rosenheim and University of Applied Sciences Rosenheim KW - Holzbau KW - Schallmesstechnik KW - sound transmission KW - structure-borne sound KW - cross-laminated timber KW - vibration reduction index KW - operational vibration analysis KW - statistical energy analysis KW - elastic interlayer Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-5118 ER -