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 - JOUR A1 - Mayr, Andreas R. A1 - Nightingale, T.R.T. T1 - On transmission of structure borne power from wood studs to gypsum board mounted on resilient metal channels – Part 1: Force and moment transmission JF - Canadian Acoustics N2 - The assumptions relating to power flow as a function of position and number of fasteners between the gypsum board and RC's was examined. It was observed that studs had both a rotational and translation motion but the translation displacement coupled more strongly than rotation. It was also observed that if the rotation velocity was less than or equal to the translation velocity, then structure borne transmission due to the rotation component could be ignored for frequencies below 2500 Hz. The results show that there is little effect associated with either the location or the number of fasteners attaching the gypsum board to the RC's about 315 Hz. KW - Approximation Theory KW - Frequencies KW - Functions KW - Power transmission KW - Radiation Y1 - 2004 IS - Vol. 32/3 ER - TY - JOUR A1 - Mayr, Andreas R. A1 - Nightingale, T.R.T. A1 - Fischer, Heinz Martin T1 - Metall macht leise. JF - Journal TrockenBau Akustik KW - Trockenbau KW - Metalldämmung KW - Schallschutz Y1 - 2006 IS - 3/2006 ER - TY - CHAP A1 - Mayr, Andreas R. A1 - Nightingale, T.R.T. A1 - Fischer, Heinz Martin T1 - Verbesserung der Schalldämmung von Holzständerwänden bei punktförmiger Anregung durch Verwendung von Metall-Feder-Profilen. T2 - DAGA 2005, Deutsche Jahrestagung für Akustik, München. KW - Metall-Feder-Profile KW - Holzständerwände KW - Schallschutz Y1 - 2005 ER - TY - JOUR A1 - Nightingale, T.R.T. A1 - Mayr, Andreas R. T1 - On transmission of structure borne power from wood studs to gypsum board mounted on resilient metal channels – Part 2: Some simplifications for modelling JF - Canadian Acoustics N2 - The simplifications used while creating a model for structure borne transmission from a wood stud to a gypsum board mounted on RCs are discussed. Above 400 Hz power transmission is determined by stud translation, is propotional to the number of RCs, and is independent of number and location of fasteners between gypsum board and RCs. In this frequency range it is possible to use the mobility approach if RCs can be approximated by a series of idealised springs located at points of intersection between stud and RCs. The dynamic stiffness of each spring is equal to that of the RC at a stud. KW - Aspect ratio KW - Attenuation KW - Boundary conditions KW - Electric excitation KW - Finite element method Y1 - 2004 IS - Vol. 32/3 ER -